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Rosati A, Vargiu V, Capozzi VA, Giannarelli D, Palmieri E, Baroni A, Perrone E, Berretta R, Cosentino F, Scambia G, Fanfani F. Concurrent endometrial cancer in atypical endometrial hyperplasia and the role of sentinel lymph nodes: clinical insights from a multicenter experience. Int J Gynecol Cancer 2024:ijgc-2023-005202. [PMID: 38431287 DOI: 10.1136/ijgc-2023-005202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVE This study aimed to evaluate the prevalence of concurrent endometrial cancer in patients pre-operatively diagnosed with atypical endometrial hyperplasia undergoing hysterectomy. Additionally, we assessed the occurrence of high to intermediate-risk and high-risk tumors according to the ESGO-ESTRO-ESP classification. The study also compared surgical outcomes and complications between patients undergoing simple hysterectomy and those undergoing hysterectomy with sentinel lymph node biopsy. METHODS In this multicenter retrospective study, patients with a pre-operative diagnosis of atypical endometrial hyperplasia were identified and divided into two groups: Group 1, which included patients treated with total hysterectomy with or without bilateral salpingo-oophorectomy, and Group 2, where sentinel lymph node biopsy was incorporated into the standard surgical treatment. RESULTS Among 460 patients with atypical endometrial hyperplasia, 192 received standard surgical management (Group 1) and 268 underwent sentinel lymph node biopsy (Group 2). A total of 47.2% (95% CI 42.6% to 51.7%) of patients were upgraded to endometrial cancer on final histopathological examination. High to intermediate-risk and high-risk tumors constituted 12.3% and 9.2% in Group 2 and 7.4% and 3.7% in Group 1. Lymph node metastases were identified in 7.6% of patients with concurrent endometrial cancer who underwent nodal assessment with at least unilateral mapping. Of the 12 sentinel lymph node metastases, 75.0% were micrometastases, 16.7% macrometastases, and 8.3% isolated tumor cells. No significant differences were found in estimated blood loss, operative time, and intra-operative and post-operative complications between the two groups. The rate of patients undergoing sentinel lymph node biopsy doubled every 2 years (OR 2.010, p<0.001), reaching 79.1% in the last 2 years. CONCLUSION This study found a prevalence of concurrent endometrial cancer of 47.2%, and sentinel lymph node biopsy provided prognostic and therapeutic information in 60.8% of cases. It also allowed for the adjustment of adjuvant therapy in 12.3% of high to intermediate-risk patients without increasing operative time or complication rates.
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Affiliation(s)
- Andrea Rosati
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - Virginia Vargiu
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | | | - Diana Giannarelli
- Facility of Epidemiology and Biostatistics, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | | | | | - Emanuele Perrone
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Roberto Berretta
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Francesco Cosentino
- Department of Medicine and Health Sciences "Vincenzo Tiberio", Università degli Studi del Molise, Campobasso, Molise, Italy
| | - Giovanni Scambia
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - Francesco Fanfani
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
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Baroni A, Fregna G, Lamberti N, Manfredini F, Straudi S. Fatigue can influence the development of late-onset pain in post-COVID-19 syndrome: An observational study. Eur J Pain 2023. [PMID: 38155562 DOI: 10.1002/ejp.2228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Late-onset pain is frequent following COVID-19, and many pathogenetic mechanisms have been proposed. Identifying the main features of patients may help in designing tailored rehabilitative interventions. METHODS We enrolled post-COVID-19 patients with an increase in pain intensity of two points on the COVID-19 Yorkshire Rehabilitation Scale (C19-YRS) at 52 weeks compared to the pre-COVID-19 condition. All subjects were retrospectively monitored at 12, 26, and 52 weeks. A specific pain assessment was performed to determine the characteristics and mechanisms of pain. Catastrophizing, kinesiophobia, and other psychological symptoms were evaluated. The pressure pain threshold (PPT) and temporal summation (TS) were measured and compared in age- and sex-matched healthy controls to analyse pain characteristics. RESULTS A total of 67 patients were recruited, with 20 of them presenting an increase in pain at 52 weeks. Subjects of the two subgroups were similar in demographic and clinical characteristics at baseline; significant differences in fatigue, anxiety, mobility, ability to perform daily activities, and general health perception were recorded at 26 weeks. Fatigue significantly predicted pain onset (β = 0.54, p = 0.002). Sixteen different body regions were identified as painful, with a pain intensity of 6.0 ± 1.9. Most of the samples did not show neuropathic or nociplastic mechanisms. No differences in PPT and TS were recorded between patients and healthy controls. CONCLUSIONS Almost one out of three patients hospitalized for COVID-19 developed pain 1 year later, and fatigue seems responsible for chronicity. An overlapping of conditions may explain late-onset post-COVID-19 pain, and a comprehensive approach must be considered for patient management. SIGNIFICANCE Late-onset pain is frequent in post-COVID-19 syndrome and an overlapping of different mechanisms seems to be responsible for its development. Among many predisposing factors, fatigue in the months before seems to be one of the primary causes of pain one year following infection and its management may help to identify new strategies for prevention and treatment of late-onset pain.
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Affiliation(s)
- A Baroni
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Ferrara University Hospital, Ferrara, Italy
| | - G Fregna
- Doctoral Program in Translational Neurosciences and Neurotechnologies, University of Ferrara, Ferrara, Italy
| | - N Lamberti
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - F Manfredini
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Ferrara University Hospital, Ferrara, Italy
| | - S Straudi
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Ferrara University Hospital, Ferrara, Italy
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Baroni A, Feder M, Castellanos F, Li J, Shatkin J. Internet use 101 in college: Do undergraduates want to learn healthier internet use? Public Health Pract (Oxf) 2023; 6:100411. [PMID: 37576526 PMCID: PMC10413188 DOI: 10.1016/j.puhip.2023.100411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/11/2023] [Accepted: 07/20/2023] [Indexed: 08/15/2023] Open
Abstract
Background Internet overuse is an emerging public health emergency, especially for college students in the United States. The purpose of this study was to assess college students' internet usage and interest in learning healthy internet usage skills as part of a college curriculum. Study design Participants completed an online anonymous questionnaire which included the short version of the Internet Addiction Test, a modified Youth Health Movement survey, and questions regarding their interest in healthy internet use coursework. Methods A total of 402 participants were recruited via an email LISTSERV of current undergraduates and recent graduates who had taken at least one class within a child and adolescent mental health studies minor while enrolled in a large university. Results Overall, 70% of participants reported that they use the internet excessively, and a majority of participants reported that internet use has negatively affected their sleep and increased their anxiety. Seventy percent of participants reported that they would benefit from instruction on healthy internet usage via formal courses for credit or online modules. Conclusions Students are aware of the difficulty in managing their internet use in college and are motivated to engage in novel courses on healthy internet usage. Academic institutions should consider developing courses or modules on healthy internet use.
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Affiliation(s)
- A. Baroni
- NYU Grossman School of Medicine, Department of Child and Adolescent Psychiatry and NYC Health+Hospitals/Bellevue, Department of Child and Adolescent Psychiatry, USA
| | - M.A. Feder
- NYU Grossman School of Medicine, Department of Child and Adolescent Psychiatry and NYC Health+Hospitals/Bellevue, Department of Child and Adolescent Psychiatry, USA
| | - F.X. Castellanos
- NYU Grossman School of Medicine, Department of Child and Adolescent Psychiatry, USA
| | | | - J. Shatkin
- NYU Grossman School of Medicine, Department of Child and Adolescent Psychiatry, USA
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Masciullo V, Susini T, Corrado G, Stepanova M, Baroni A, Renda I, Castiglione F, Minimo C, Bellacosa A, Chiofalo B, Vizza E, Scambia G. Nuclear Expression of β-Catenin Is Associated with Improved Outcomes in Endometrial Cancer. Diagnostics (Basel) 2022; 12:diagnostics12102401. [PMID: 36292090 PMCID: PMC9600744 DOI: 10.3390/diagnostics12102401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 11/25/2022] Open
Abstract
Beta-catenin is involved in intercellular adhesion and participates in the Wnt signaling pathway. This study evaluated the expression pattern and prognostic value of β-catenin in a series of endometrial carcinoma patients. Immunohistochemical analyses were used to assess the expression and subcellular localization of β-catenin from tissue sections of 74 patients with endometrial carcinoma. No correlation was found between beta-catenin expression and clinicopathological parameters. Patients expressing nuclear β-catenin (n = 13; 16%) showed a more favorable prognosis than patients expressing membranous β-catenin; the 5-year disease-related survival rate was 100% for cases expressing nuclear β-catenin, compared with 73.8% (SE 0.08) of cases expressing membranous β-catenin (p = 0.04). Although statistical significance was not reached (p = 0.15), cases expressing nuclear β-catenin showed a 5-year disease-free survival rate of 90.9% (SE 0.08) compared with 67.4% (SE 0.08) of cases expressing membranous β-catenin. Univariate Cox analysis revealed that membranous β-catenin expression was found to be associated with a relative risk of death of 33.9 (p = 0.04). The stage of disease (p = 0.0006), histology (p = 0.003), and grading (p = 0.008) were also significantly correlated with disease-free survival according to univariate Cox analyses. Determining β-catenin expression and localization patterns may predict survival in patients with endometrial cancer and, therefore, should be considered a potential prognostic marker of disease.
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Affiliation(s)
- Valeria Masciullo
- Division of Gynecologic Surgery, Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Catholic University of Sacred Heart, 00168 Rome, Italy
| | - Tommaso Susini
- Department of Obstetrics and Gynecology, University of Florence, 50121 Florence, Italy
| | - Giacomo Corrado
- Division of Gynecologic Oncology, Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Catholic University of Sacred Heart, 00168 Rome, Italy
| | - Marina Stepanova
- Cancer Signaling and Epigenetics Program and Cancer Epigenetics Institute, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Alessandro Baroni
- Division of Gynecologic Surgery, Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Catholic University of Sacred Heart, 00168 Rome, Italy
| | - Irene Renda
- Department of Pathology, University of Florence, 50121 Florence, Italy
| | | | - Corrado Minimo
- Department of Pathology and Laboratory Medicine, Albert Einstein Medical Center, Philadelphia, PA 19111, USA
| | - Alfonso Bellacosa
- Cancer Signaling and Epigenetics Program and Cancer Epigenetics Institute, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Benito Chiofalo
- Gynecologic Oncology Unit, Department of Experimental Clinical Oncology, IRCCS Regina Elena National Cancer Institute, 00128 Rome, Italy
- Correspondence: ; Tel.: +39-06-5266-2433
| | - Enrico Vizza
- Gynecologic Oncology Unit, Department of Experimental Clinical Oncology, IRCCS Regina Elena National Cancer Institute, 00128 Rome, Italy
| | - Giovanni Scambia
- Division of Gynecologic Oncology, Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Catholic University of Sacred Heart, 00168 Rome, Italy
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Colas C, Grunewald T, Gobeaux F, Campos A, Burghammer M, Baroni A, Ferrand P, Chamard V, Chevallard C. Bio-inspired films of crystalline calcium carbonate: 2D patterning by surface-driven liquid–liquid phase separation and hybrid amorphous-to-crystal transformation. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322095651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Lanzisera R, Baroni A, Lenti G, Geri E. A prospective observational study on the beneficial effects and tolerability of a cetylated fatty acids (CFA) complex in a patch formulation for shoulder tendon disorders. BMC Musculoskelet Disord 2022; 23:352. [PMID: 35413878 PMCID: PMC9003972 DOI: 10.1186/s12891-022-05304-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 04/04/2022] [Indexed: 11/18/2022] Open
Abstract
Background The advancement of physiopathological knowledge of tendon structures has shown that, in conditions of overload, there is the onset of both degenerative phenomena, such as the production of metalloproteases, apoptosis of tendon cells and neoangiogenesis, and regenerative and protective phenomena, such as the production of IGF-1 and nitric oxide. Tendinopathy results from the imbalance between these two groups of factors, leading to degeneration, weakening, and fissuring of the tendons, with the presence of local pain. The aim of the study was to evaluate the efficacy and tolerability of cetylated fatty acids (CFA) patch formulation in the control of acute localized shoulder pain and recovery of function in patients with tendinopathies. Methods A prospective, single-center, no-profit observational study conducted in accordance with Good Clinical Practice. Thirty patients with recent onset shoulder pain symptoms (1–3 months) related to bursitis and tenosynovitis, with a diagnosis of shoulder tendon pathology confirmed by ultrasound examination, was evaluated for shoulder pain and function using the Constant Murley Score. Patients used 1 patch containing CFA for 8 h per day for 10 days. At 10 (V1) and 35 (V2) days after the first visit (V0), the Constant Score, treatment compliance and product tolerability were evaluated. Results Thirty patients completed the treatment. At V0 the mean Constant Score (CS) was 32.37 ± 11.86, during V1 the mean CS was 50.68 ± 14.30, and at V3 the mean CS was 51.07 ± 15.29. The CS increased significantly between V0 and V1 (p < 0.0001) but did not vary significantly between V1 and V2 (p = 1). The tolerability of the product was excellent. Conclusions Application of the CFA-based patch for 10 consecutive days in patients with shoulder tendinopathies was effective in reducing local pain and resulted in a good recovery of function. The results achieved at day 10 were maintained for 25 days, until the follow-up visit at day 35. CFA-based patch, thanks to their efficacy and tolerability, seems to be a promising solution to improve pain and functionality in subject with shoulder tendinopathy. Trial registration The study was approved by the Ethics Committee of Azienda USL Toscana Nord Ovest (protocol code 2018RIAB105) and conducted in accordance with Good Clinical Practice and the ethical principles outlined in the Declaration of Helsinki.
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Affiliation(s)
- Rosaria Lanzisera
- UOC Recupero E Riabilitazione Funzionale, Ambito Territoriale Pisano, ASL Toscana Nordovest, Pisa, Italy.
| | - Alessandro Baroni
- UOC Recupero E Riabilitazione Funzionale, Ambito Territoriale Pisano, ASL Toscana Nordovest, Pisa, Italy
| | - Gaetana Lenti
- UOC Recupero E Riabilitazione Funzionale, Ambito Territoriale Pisano, ASL Toscana Nordovest, Pisa, Italy
| | - Elisabetta Geri
- UOC Recupero E Riabilitazione Funzionale, Ambito Territoriale Pisano, ASL Toscana Nordovest, Pisa, Italy
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Restaino S, Buda A, Puppo A, Capozzi VA, Sozzi G, Casarin J, Gallitelli V, Murgia F, Vizzielli G, Baroni A, Corrado G, Pasciuto T, Ferrari D, Novelli A, Berretta R, Legge F, Vizza E, Chiantera V, Ghezzi F, Landoni F, Scambia G, Fanfani F. Anatomical distribution of sentinel lymph nodes in patients with endometrial cancer: a multicenter study. Int J Gynecol Cancer 2022; 32:517-524. [PMID: 35110375 DOI: 10.1136/ijgc-2021-003253] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Sentinel lymph node (SLN) mapping represents the standard approach in uterine confined endometrial cancer patients. The aim of this study was to evaluate the anatomical distribution of SLNs and the most frequent locations of nodal metastasis. METHODS This was an observational retrospective multicenter study involving eight high volume gynecologic cancer centers in Italy. We reviewed 1576 patients with a histologically confirmed diagnosis of endometrial cancer from September 2015 to June 2020. All patients underwent total hysterectomy with salpingo-ophorectomy and SLN mapping. RESULTS A total of 3105 SLNs were mapped and removed, 2809 (90.5%) of these were bilateral and 296 (9.5%) unilateral. The overall detection rate was 93.4% (77.9% bilateral and 15.5% unilateral). The majority of SLNs (80%) and positive SLNs (77.8%) were found at the external iliac and obturator level in both endometrioid and non-endometrioid endometrial cancer. Negative SLNs were more frequent in patients with endometrioid compared with non-endometrioid cancer (91.9% vs 86.1%, p<0.0001). Older patients, a higher body mass index, and non-endometrioid histology were more likely to have 'no mapping' (p<0.0001). Univariate and multivariate analysis showed that higher body mass index and age at surgery were independent predictive factors of empty node packet and fat tissue (p=0.029 and p<0.01, respectively). CONCLUSION The most frequent sites of SLNs and metastases were located in the pelvic area below the iliac vessel bifurcation. Our findings showed that older age, a higher body mass index, and non-endometrioid histology had a negative impact on mapping.
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Affiliation(s)
- Stefano Restaino
- Department of Obstetrics, Gynecology, and Pediatrics, Obstetrics and Gynecology Unit, Udine University Hospital, DAME, Udine, Italy
| | - Alessandro Buda
- Gynecology Oncology Surgical Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.,Ospedale Michele e Pietro Ferrero, Verduno, Italy
| | - Andrea Puppo
- Clinic of Obstetrics and Gynecology, Santa Croce e Carle Hospital, Cuneo, Italy
| | | | - Giulio Sozzi
- Department of Gynecologic Oncology, Università di Palermo, Palermo, Italy
| | - Jvan Casarin
- Department of Obstetrics and Gynecology, University of Insubria, Women's and Children's Del Ponte Hospital, Varese, Italy
| | | | - Ferdinando Murgia
- Obstetrics and Gynecology Unit, General Regional Hospital "F. Miulli", Acquaviva delle Fonti, Bari, Italy
| | - Giuseppe Vizzielli
- Department of Obstetrics, Gynecology, and Pediatrics, Obstetrics and Gynecology Unit, Udine University Hospital, DAME, Udine, Italy.,Department of Medicine, University of Udine, Gynecology and Obstetrics Clinic, Udine, Italy
| | | | | | - Tina Pasciuto
- Research Core Facilty Data Collection G-STeP, Fondazione Policlinico Universitario Agostino Gemelli IRCCS Largo Agostino Gemelli 8, Rome, Italy
| | - Debora Ferrari
- Gynecology Oncology Surgical Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Antonia Novelli
- Department of Gynaecology and Obstetrics, Regina Montis Regalis Hospital, Mondovì, Italy
| | - Roberto Berretta
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Francesco Legge
- Obstetrics and Gynecology Unit, General Regional Hospital "F. Miulli", Acquaviva delle Fonti, Bari, Italy
| | - Enrico Vizza
- Department of Experimental Clinical Oncology, IRCCS 'Regina Elena' National Cancer Institute, Rome, Italy
| | - Vito Chiantera
- Department of Gynecologic Oncology, Università di Palermo, Palermo, Italy
| | - Fabio Ghezzi
- Department of Obstetrics and Gynecology, University of Insubria, Women's and Children's Del Ponte Hospital, Varese, Italy
| | - Fabio Landoni
- Gynecology Oncology Surgical Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Giovanni Scambia
- Department of Obstetrics and Gynecology, University of Insubria, Women's and Children's Del Ponte Hospital, Varese, Italy.,UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Francesco Fanfani
- Department of Obstetrics and Gynecology, University of Insubria, Women's and Children's Del Ponte Hospital, Varese, Italy .,UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
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Restaino S, Tortorella L, Dinoi G, Zannoni GF, Baroni A, Capasso I, Distefano E, Sozzi G, Chiantera V, Scambia G, Fanfani F. Semiquantitative evaluation of lymph-vascular space invasion in patients affected by endometrial cancer: Prognostic and clinical implications. Eur J Cancer 2020; 142:29-37. [PMID: 33217679 DOI: 10.1016/j.ejca.2020.10.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/11/2020] [Accepted: 10/15/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVES The interpretation of lymph-vascular space invasion (LVSI) is usually qualitative, as presence or absence. The aim of this study is to investigate the prognostic role of LVSI in patients affected by endometrial cancer, when evaluated with a semiquantitative analysis. METHODS This retrospective multicentre study enrolled patients who received a histologically confirmed diagnosis of endometrial cancer. The assessment of LVSI was semiquantitative in accordance with the three-tiered scoring system (absent, focal and diffuse). RESULTS Among 1258 patients with surgical-stage endometrial cancer, LVSI has been found in 32.8% of cases (n = 412), whose 12.7% (n = 160) were focal, and 20% (n = 252) diffuse. The rate of lymph node metastasis increased from the 5% in patients with no LVSI to 15% in patients with focal LVSI and 33% in those with diffuse LVSI (p < 0.001). Distant recurrences were more frequent in patients with diffuse LVSI than in focal or no LVSI (24.9% versus 14.7% and 6.6%, respectively, p < 0.001). Diffuse LVSI was found to significantly increase the risk of distant metastasis (adjusted odds ratio (A OR) 2.57, p < 0.001). Adjuvant radiation were associated with improved overall survival (OS) and disease-free survival (DFS) in patients with diffuse LVSI. CONCLUSION The presence of diffuse LVSI is an independent risk factor for both lymph node metastasis and distant recurrence in endometrial cancer patients, and it is associated with a significantly decreased OS and DFS. Adjuvant radiation improved survival regardless of grading, histotype and lymph nodal metastasis in women with diffuse LVSI.
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Affiliation(s)
- Stefano Restaino
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per La Tutela Della Salute Della Donna e Della Vita Nascente, L.go A. Gemelli, 00167, Roma, Italy
| | - Lucia Tortorella
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per La Tutela Della Salute Della Donna e Della Vita Nascente, L.go A. Gemelli, 00167, Roma, Italy
| | | | - Gian-Franco Zannoni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Area Anatomia Patologica, Dipartimento per La Tutela Della Salute Della Donna e Della Vita Nascente, L.go A. Gemelli, 00167, Roma, Italy
| | | | | | | | - Giulio Sozzi
- Dipartimento di Ginecologia Oncologica, Università di Palermo, Italy
| | - Vito Chiantera
- Dipartimento di Ginecologia Oncologica, Università di Palermo, Italy
| | - Giovanni Scambia
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per La Tutela Della Salute Della Donna e Della Vita Nascente, L.go A. Gemelli, 00167, Roma, Italy; Università Cattolica Del Sacro Cuore, Roma, Italy.
| | - Francesco Fanfani
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per La Tutela Della Salute Della Donna e Della Vita Nascente, L.go A. Gemelli, 00167, Roma, Italy; Università Cattolica Del Sacro Cuore, Roma, Italy
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Piarulli M, Baroni A, Girlanda L, Kievsky A, Lovato A, Lusk E, Marcucci LE, Pieper SC, Schiavilla R, Viviani M, Wiringa RB. Light-Nuclei Spectra from Chiral Dynamics. Phys Rev Lett 2018; 120:052503. [PMID: 29481181 DOI: 10.1103/physrevlett.120.052503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Indexed: 06/08/2023]
Abstract
In recent years local chiral interactions have been derived and implemented in quantum Monte Carlo methods in order to test to what extent the chiral effective field theory framework impacts our knowledge of few- and many-body systems. In this Letter, we present Green's function Monte Carlo calculations of light nuclei based on the family of local two-body interactions presented by our group in a previous paper in conjunction with chiral three-body interactions fitted to bound- and scattering-state observables in the three-nucleon sector. These interactions include Δ intermediate states in their two-pion-exchange components. We obtain predictions for the energy levels and level ordering of nuclei in the mass range A=4-12, accurate to ≤2% of the binding energy, in very satisfactory agreement with experimental data.
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Affiliation(s)
- M Piarulli
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A Baroni
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA
| | - L Girlanda
- Department of Mathematics and Physics, University of Salento, 73100 Lecce, Italy
- INFN-Lecce, 73100 Lecce, Italy
| | | | - A Lovato
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- INFN-Trento, 38050 Povo, Italy
| | - Ewing Lusk
- Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - L E Marcucci
- INFN-Pisa, 56127 Pisa, Italy
- Department of Physics, University of Pisa, 56127 Pisa, Italy
| | - Steven C Pieper
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - R Schiavilla
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA
- Theory Center, Jefferson Lab, Newport News, Virginia 23606, USA
| | | | - R B Wiringa
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Baroni A, Ruggieri S. Segregation discovery in a social network of companies. J Intell Inf Syst 2017. [DOI: 10.1007/s10844-017-0485-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Alderman OLG, Ferlat G, Baroni A, Salanne M, Micoulaut M, Benmore CJ, Lin A, Tamalonis A, Weber JKR. Liquid B2O3 up to 1700 K: x-ray diffraction and boroxol ring dissolution. J Phys Condens Matter 2015; 27:455104. [PMID: 26499978 DOI: 10.1088/0953-8984/27/45/455104] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Using high energy x-ray diffraction, the structure factors of glassy and molten B2O3 were measured with high signal-to-noise, up to a temperature of T = 1710(20) K. The observed systematic changes with T are shown to be consistent with the dissolution of hexagonal [B3O6] boroxol rings, which are abundant in the glass, whilst the high-T (>~1500 K) liquid can be more closely described as a random network structure based on [BO3] triangular building blocks. We therefore argue that diffraction data are in fact qualitatively sensitive to the presence of small rings, and support the existence of a continuous structural transition in molten B2O3, for which the temperature evolution of the 808 cm−1 Raman scattering band (boroxol breathing mode) has long stood as the most emphatic evidence. Our conclusions are supported by both first-principles and polarizable ion model molecular dynamics simulations which are capable of giving good account of the experimental data, so long as steps are taken to ensure a ring fraction similar to that expected from Raman spectroscopy. The mean thermal expansion of the B-O bond has been measured directly to be αBO = 3.7(2) × 10−6 K−1, which accounts for a few percent of the bulk expansion just above the glass transition temperature, but accounts for greater than one third of the bulk expansion at temperatures in excess of 1673 K.
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Cusaro C, Baroni A, Chiarinotti D, Ragazzoni E, Cavagnino A, Verzetti G. Epidemiology and course of hereditary nephritis: personal experience. Contrib Nephrol 2015; 80:140-2. [PMID: 2282813 DOI: 10.1159/000418641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- C Cusaro
- Nephrology Unit, Maggiore Hospital, Novara, Italy
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Baroni A, Russo T, Piccolo V, Siano M, Russo D, Nacca L, Ruocco E. Opportunistic metastatic porocarcinoma after saphenous venectomy for coronary bypass surgery. Clin Exp Dermatol 2013; 38:507-10. [DOI: 10.1111/ced.12032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2012] [Indexed: 12/01/2022]
Affiliation(s)
- A. Baroni
- Department of Dermatology and Venereology; Second University of Naples; Naples; Italy
| | - T. Russo
- Department of Dermatology and Venereology; Second University of Naples; Naples; Italy
| | - V. Piccolo
- Department of Dermatology and Venereology; Second University of Naples; Naples; Italy
| | - M. Siano
- Department of Biiomorphological and Functional Sciences; Section of Anatomical Pathology; University Federico II; Naples; Italy
| | - D. Russo
- Department of Biiomorphological and Functional Sciences; Section of Anatomical Pathology; University Federico II; Naples; Italy
| | - L. Nacca
- Department of Dermatology and Venereology; Second University of Naples; Naples; Italy
| | - E. Ruocco
- Department of Dermatology and Venereology; Second University of Naples; Naples; Italy
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Deflandre JP, Estublier A, Baroni A, Fornel A, Clochard V, Delépine N. Assessing Field Pressure and Plume Migration in CO2 Storages: Application of Case-specific Workflows at in Salah and Sleipner. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.egypro.2013.06.248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Baroni A, Staibano S, Russo T, Piccolo V, Satriano RA, Vozza A, Vozza G. Verrucous epidermal naevus and naevus spilus associated with lower limb asymmetry and right bundle-branch block: a case of phacomatosis pigmentokeratotica? Clin Exp Dermatol 2011; 37:74-5. [DOI: 10.1111/j.1365-2230.2011.04134.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ionescu MA, Baroni A, Brambilla L, Cannavò SP, Cristaudo A, Vedove CD, Frasca M, Girolomoni G, Gnecchi L, Peris K, Trifirò C, Matta AM, Robert G. Double blind clinical trial in a series of 115 patients with seborrheic dermatitis: prevention of relapses using a topical modulator of Toll like receptor 2. GIORN ITAL DERMAT V 2011; 146:185-189. [PMID: 21566548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM Seborrheic dermatitis is a chronic inflammatory disease aggravated by Malassezia species. Toll-like receptors (TLR) are part of innate immune system that can be activated by yeasts. Previous studies showed that an association of Umbelliferae extract with a lipid (TLR2-Regul™) decreases the IL-8 expression in human skin in contact with M. furfur. The aim of this study was to assess the activity of a topical formulated with TLR2-Regul™ in the prevention of seborrheic dermatitis (SD) relapses. METHODS Immune-competent SD adult patients were treated for SD (topical imidazoles or steroids). Cleared patients were randomized and received a topical containing TLR2-Regul™ (A) or its vehicle (B). Erythema, scales and pruritus were assessed during two months. RESULTS The study included 115 patients, mean age 43.4, sex ratio m/f 1.5. At week 4 the relapse rate was 26% (N.=15) in group A and 43% (N.=25) in group B. At W8 the relapse rate was 21% (N.=12) in group A and 40% (N.=23) (P=0.0309). CONCLUSION In this series of 115 adults with seborrheic dermatitis, patients treated with a topical containing TLR-Regul™ showed a significantly less relapse rate compared with the excipient group (P<0.05). TLR modulation could represent a new therapeutic approach in the prevention of seborrheic dermatitis relapses.
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Affiliation(s)
- M A Ionescu
- Dermatology Polyclinic, Saint-Louis Hospital, Paris, France.
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Donnarumma G, De Gregorio V, Fusco A, Farina E, Baroni A, Esposito V, Contaldo M, Petruzzi M, Pannone G, Serpico R. Inhibition of HSV-1 replication by laser diode-irradiation: possible mechanism of action. Int J Immunopathol Pharmacol 2011; 23:1167-76. [PMID: 21244765 DOI: 10.1177/039463201002300420] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Herpes labialis are the most frequent clinical manifestations of HSV-1 infection. Epithelial cells are able to respond to HSV-1 presence inducing the expression of IL-6, IL-1, TNF-α and IL-8. These proinflammatory cytokines have a function in the acute-phase response mediation, chemotaxis, inflammatory cell activation and antigen-presenting cells. In the human epithelial cell models, it has been demonstrated that, after an early induction of proinflammatory host response, HSV-1 down-modulates the proinflammatory cytokine production through the accumulation of two viral proteins, ICP4 and ICP27, whose transcription is induced by tegument protein VP16. These viral proteins, through the decreasing of stabilizing the mRNAs of proinflammatory genes, delay cytokine production to an extent that allows the virus to replicate. Moreover, viral transactivating proteins, ICP-0 and VP-16 induce IL-10 expression. The conventional treatment of herpes labialis involves the topical and systemic use of antiviral drugs but it is necessary to find new therapies that can act in a selective and non-cytotoxic manner in viral infection. Laser diode therapy has been considered as a non-invasive alternative treatment to the conventional treatment of herpes labialis in pain therapy, in modulation of inflammation and in wound healing. This study aims to report a possible mechanism of action of laser diode irradiation in prevention and reduction of severity of labial manifestations of herpes labialis virus. We investigated, in an in vitro model of epithelial cells HaCat, the laser-effect on HSV-1 replication and we evaluated the modulation of expression of certain proinflammatory cytokines (TNF-α, IL-1β and IL-6), antimicrobial peptide HBD2, chemokine IL-8 and the immunosuppressive cytokine, IL-10. Our results lead us to hypothesize that LD-irradiation acts in the final stage of HSV-1 replication by limiting viral spread from cell to cell and that laser therapy acts also on the host immune response unblocking the suppression of proinflammatory mediators induced by accumulation of progeny virus in infected epithelial cells.
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Affiliation(s)
- G Donnarumma
- Department of Experimental Medicine, Microbiology and Clinical Microbiology Section, Second University of Naples, Italy.
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Baroni A, Brunetti G, Ruocco E. Coexistence of malignancy (skin cancer) and immune disorder (discoid lupus erythematosus) on a burn scar: a concrete example of ‘immunocompromised district’. Br J Dermatol 2011; 164:673-5. [DOI: 10.1111/j.1365-2133.2010.10170.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Schillaci G, Pucci G, Settimi L, Pilati M, Baroni A, Mannarino E. P11.10 PRESSURE-INDEPENDENT ASSOCIATION BETWEEN AORTIC STIFFNESS AND LEFT VENTRICULAR CONCENTRIC GEOMETRY. Artery Res 2011. [DOI: 10.1016/j.artres.2011.10.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Ruocco V, Ruocco E, Brunetti G, Baroni A. The correct meaning of the term ‘immunocompromised’: a necessary explanation. J Eur Acad Dermatol Venereol 2010; 25:1242. [DOI: 10.1111/j.1468-3083.2010.03955.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ruocco E, Baroni A, Brunetti G, Ruocco V. Acne on an area of post-traumatic neuralgia: an instance of immunocompromised district. J Eur Acad Dermatol Venereol 2010; 24:1367-8; author reply 1368-9. [DOI: 10.1111/j.1468-3083.2010.03842.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baroni A, Ruocco V, Di Maio R, Nuzzo T, Del Vecchio M, Ruocco E. Papillomatosis cutis arising on an immuno-compromised district due to paraplegia. Br J Dermatol 2010; 163:646-8. [PMID: 20456343 DOI: 10.1111/j.1365-2133.2010.09833.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Leishmaniasis is a human disease produced by a parasite of the Leishmania genus transmitted by prick of an infected female sandfly. The disease occurs clinically with either cutaneous, mucocutaneous or visceral form, depending on the infective species and the immune status of the patient. Antimonial drugs are the current treatment of choice for all clinical forms. We report a case of cutaneous Leishmaniasis in a young girl successfully treated with itraconazole.
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Baroni A, Ruocco E, Aiello FS, Faccenda F, Lo Schiavo A, Satriano RA, Guerrera V. Tinea capitis mimicking tufted hair folliculitis. Clin Exp Dermatol 2009; 34:e699-701. [DOI: 10.1111/j.1365-2230.2009.03435.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Baroni A, Puca RV, Aiello FS, Palla M, Faccenda F, Vozza G, Sangiuliano S, Ruocco E. Cefuroxime-induced pemphigus erythematosus in a young boy. Clin Exp Dermatol 2009; 34:708-10. [DOI: 10.1111/j.1365-2230.2008.03007.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Baroni A, De Luca A, De Filippis A, Petrazzuolo M, Manente L, Nicoletti R, Tufano MA, Buommino E. 3-O-methylfunicone, a metabolite of Penicillium pinophilum, inhibits proliferation of human melanoma cells by causing G(2) + M arrest and inducing apoptosis. Cell Prolif 2009; 42:541-53. [PMID: 19486013 DOI: 10.1111/j.1365-2184.2009.00609.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES Melanoma cells take advantage of impaired ability to undergo programmed cell death in response to different external stimuli and chemotherapeutic drugs; this makes prevention of tumour progression very difficult. The aim of this study was to demonstrate whether 3-O-methylfunicone (OMF), a metabolite of Penicillium pinophilum, has the ability to arrest cell population growth and to induce apoptosis in A375P (parental) and A375M (metastasis derivatived) melanoma cell lines. MATERIALS AND METHODS Cell proliferation and apoptosis were analysed by flow cytometry, DNA fragmentation, caspase-3 and caspase-9 activation, and PARP-1 cleavage. RESULTS We demonstrated that OMF affected cell proliferation in a time- and dose-dependent manner, reaching the best effect at concentration of 80 microg/ml for 24 h. Flow cytometry revealed that OMF caused significant G(2) phase arrest, which was associated with marked decrease in cyclin B1/p34(cdc2) complex and p21 induction. OMF also induced marked decrease of survivin expression. Reduced levels of apoptosis were evident after silencing p21 expression in both cell lines. Finally, the effect exercised by OMF on hTERT and TEP-1 gene expression confirmed the ability of this molecule to interfere with replicative ability of cells. CONCLUSIONS The results reported here seem to suggest that OMF as a promising molecule to include in strategies for treatment of melanoma.
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Affiliation(s)
- A Baroni
- Department of Dermatology, Second University of Naples, Naples, Italy
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Borzumati M, Vio P, Bonvegna F, Funaro L, Baroni A. [Midarm arteriovenous fistula: single-center experience]. G Ital Nefrol 2009; 26:369-371. [PMID: 19554534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In uremic patients on hemodialysis, a first vascular access using native vessels tailored into a radiocephalic arteriovenous fistula (AVF) on the wrist is the gold standard in vascular access quality. However, among the uremic population the percentage of older patients affected by diabetes or by severe generalized vascular disease is growing. In these patients distal radiocephalic AVFs often have a limited survival. This induced us to design a technique for tailoring vascular accesses at a proximal site. In the past two years (2006-2007) we created 19 AVFs at the midarm position (midarm AVF) using the proximal section of the radial artery. Midarm AVF was the second choice in 70% of patients after failure of a distal AVF and the first choice in 30% of patients. The survival of this type of access has been excellent. We have registered only one thrombosis after 6 months. In four cases access was interrupted because of the death of the patients. The remaining 14 accesses are working perfectly well. Our experience leads us to conclude that midarm AVF is not only an important intermediate step after the failure of a distal AVF and before the application of a proximal AVF, but in a population of patients with diabetes and generalized vascular disease it should probably be proposed as the AVF of choice.
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Affiliation(s)
- M Borzumati
- Struttura Complessa Nefrologia e Dialisi, Verbania, Italy.
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Casaux R, Baroni A, Ramón A, Carlini A, Bertolin M, DiPrinzio CY. Diet of the Leopard Seal Hydrurga leptonyx at the Danco Coast, Antarctic Peninsula. Polar Biol 2008. [DOI: 10.1007/s00300-008-0567-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baroni A, Perfetto B, Canozo N, Braca A, Farina E, Melito A, De Maria S, Cartenì M. Bombesin: a possible role in wound repair. Peptides 2008; 29:1157-66. [PMID: 18455266 DOI: 10.1016/j.peptides.2008.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 03/03/2008] [Accepted: 03/05/2008] [Indexed: 12/31/2022]
Abstract
During tissue regeneration and wound healing of the skin, migration, proliferation and differentiation of keratinocytes are important processes. Here we assessed the effect of a neuropeptide, bombesin, on keratinocytes during regeneration from scratch wounding. Bombesin purified from amphibian skin, is homologous of mammalian gastrin-releasing peptide and is active in mammals. Its pharmacological effects mediate various physiological activities: hypertensive action, stimulating action on gastric secretion, hyperglycemic effect or increased insulin secretion. In vitro it shows a hyperproliferative effect on different experimental models and is involved in skin repair. The aim of this study was to elucidate the effect of Bombesin in an in vitro experimental model on a mechanically injured human keratinocyte monolayer. We evaluated different mediators involved in wound repair such as IL-8, TGFbeta, IL-1, COX-2, VEGF and Toll-like receptors 2 and 4 (TLR2 and TLR4). We also studied the effects of bombesin on cell proliferation and motility and its direct effect on wound repair by observing the wound closure after mechanical injury. The involvement of the bombesin receptors neuromedin receptor (NMBR) and gastrin-releasing peptide receptor (GRP-R) was also evaluated. Our data suggest that bombesin may have an important role in skin repair by regulating the expression of healing markers. It enhanced the expression of IL-8, TGFbeta, COX-2 and VEGF. It also enhanced the expression of TLR2, while TLR4 was not expressed. Bombesin also increased cell growth and migration. In addition, we showed that NMBR was more involved in our experimental model compared to GRP-R.
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Affiliation(s)
- A Baroni
- Department of Dermatology, Faculty of Medicine and Surgery, Second University of Naples, Italy
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Ruocco E, Lo Schiavo A, Baroni A, Sangiuliano S, Puca R, Brunetti G, Ruocco V. Pemphigus Vulgaris after Coxsackievirus Infection and Cephalosporin Treatment: A Paraviral Eruption? Dermatology 2008; 216:317-9. [DOI: 10.1159/000113944] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Accepted: 09/18/2007] [Indexed: 11/19/2022] Open
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Baroni A, Bertoncin P, D'aprile P, Felluga B. Ultrastructural histopathology of chick embryo chorioallantoic membrane infected with an avian reovirus. Avian Pathol 2007; 9:341-54. [DOI: 10.1080/03079458008418418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Casaux R, Baroni A, Ramón A, Favero M, Silva P. Aspects of the foraging behaviour of the Antarctic Tern Sterna vittata gaini at Harmony Point, South Shetland Islands. Polar Biol 2007. [DOI: 10.1007/s00300-007-0362-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Borzumati M, De Gregorio F, Funaro L, Guazzoni A, Baroni A. [Experience in the surveillance of arteriovenous fistula in Verbania, Italy]. G Ital Nefrol 2007; 24:327-32. [PMID: 17659504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
One hundred forty-five patients are receiving renal replacement therapy at our center: 127 are on hemodialysis, 18 on peritoneal dialysis. From 2000 through 2005 a total of 215 arteriovenous fistulas (57% distal, 31% proximal, 12% prosthesis) were created. After some time we felt the necessity to design a vascular access surveillance system because the uremic population was increasingly constituted by aged people, including many diabetics and people suffering from hypertension with generalized vascular disease. The system comprised objective examination of the access at every dialysis session; kinetic Kt/V every 3 months; and a recirculation test (GIT) every 6 months. When there were anomalies in one of the above test results, color Doppler was performed. Detection of major stenosis with altered velocity parameters was a clear indication for angiography, possibly followed by angioplasty (PTA). In the indicated period, 15 patients underwent this procedure, and PTA was performed in all of them, often with placement of an endovascular stent. The results showed a survival of 12 months in 85% of patients and 18 months in 71% of patients. On the whole these data are comparable with others in the medical literature. The incidence of restenosis can be considered acceptable: it occurred in 3 cases out of 15 and could be corrected by PTA. In conclusion, PTA plus stent implantation is a valid method allowing quick and reliable correction of stenosis; a vascular access surveillance protocol and color Doppler imaging allow patient selection for angiography. PTA is to be considered an intermediate phase in stenosis correction before suggesting a new vascular access intervention to the patient.
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Affiliation(s)
- M Borzumati
- Struttura Complessa Nefrologia e Dialisi, Ospedale Castelli di Verbania, Verbania.
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Baroni A, Paoletti I, Ruocco E, Ayala F, Corrado F, Wolf R, Tufano MA, Donnarumma G. Antiviral effects of quinine sulfate on HSV-1 HaCat cells infected: analysis of the molecular mechanisms involved. J Dermatol Sci 2007; 47:253-5. [PMID: 17600687 DOI: 10.1016/j.jdermsci.2007.05.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2007] [Revised: 05/09/2007] [Accepted: 05/16/2007] [Indexed: 11/21/2022]
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Baroni A, Paoletti I, Greco R, Satriano RA, Ruocco E, Tufano MA, Perez JJ. Immunomodulatory effects of a set of amygdalin analogues on human keratinocyte cells. Exp Dermatol 2006. [PMID: 16232308 DOI: 10.1111/j.1600-0625.2005.00368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Peptide T (PT) is an octapeptide shown to resolve psoriatic lesions. Our previous investigations suggest that keratinocytes play an important role in conditioning the therapeutic effects of the PT in psoriasis. However, peptides are not good therapeutic agents, because they exhibit poor absorption, are easily metabolized and are immunogenic. Using computational methods, the natural product amygdalin was identified as peptidomimetic of PT. However, amygdalin exhibits a toxic profile due to its cyanide group. To overcome this deleterious effect, we synthesized analogues lacking the cyanide group. Human keratinocytes were treated with PT or with three different peptidomimetics of PT. To study its effects on the expression of HSP-70, TGF-beta, alpha-v integrin, ICAM-1 and cytokines, we analysed the protein levels by Western blot and ELISA. Our results show that the different peptidomimetics of PT tested exhibit a similar biological behaviour in regard to the overexpression of HSP-70, TGF-beta and alpha-v integrin than the native peptide. TNF-alpha is overexpressed by PT and SVT-03018; between the other two analogs, SVT-03016 do not produce any significant change in regard to the control, while SVT-03017 shows only a moderate increase in regard to control. SVT-03018 provokes a remarkable upregulation of IL-10, stronger than SVT-03016, SVT-03017 and PT. All the other three analogues reduce comparably to the PT, the expression of ICAM-1 and do not increase the release of proinflammatory cytokines. The results highlighted that the three analogues of amygdalin with the cyanide group removed exhibit the same biological effects of PT. Therefore, they can be considered peptidomimetics, suggesting their possible use in the treatment of psoriasis.
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Affiliation(s)
- A Baroni
- Department of Experimental Medicine, Microbiology and Clinical Microbiology Section, Second University of Naples, Italy
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Baroni A, Paoletti I, Greco R, Satriano RA, Ruocco E, Tufano MA, Perez JJ. Immunomodulatory effects of a set of amygdalin analogues on human keratinocyte cells. Exp Dermatol 2005; 14:854-9. [PMID: 16232308 DOI: 10.1111/j.1600-0625.2005.00368.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Peptide T (PT) is an octapeptide shown to resolve psoriatic lesions. Our previous investigations suggest that keratinocytes play an important role in conditioning the therapeutic effects of the PT in psoriasis. However, peptides are not good therapeutic agents, because they exhibit poor absorption, are easily metabolized and are immunogenic. Using computational methods, the natural product amygdalin was identified as peptidomimetic of PT. However, amygdalin exhibits a toxic profile due to its cyanide group. To overcome this deleterious effect, we synthesized analogues lacking the cyanide group. Human keratinocytes were treated with PT or with three different peptidomimetics of PT. To study its effects on the expression of HSP-70, TGF-beta, alpha-v integrin, ICAM-1 and cytokines, we analysed the protein levels by Western blot and ELISA. Our results show that the different peptidomimetics of PT tested exhibit a similar biological behaviour in regard to the overexpression of HSP-70, TGF-beta and alpha-v integrin than the native peptide. TNF-alpha is overexpressed by PT and SVT-03018; between the other two analogs, SVT-03016 do not produce any significant change in regard to the control, while SVT-03017 shows only a moderate increase in regard to control. SVT-03018 provokes a remarkable upregulation of IL-10, stronger than SVT-03016, SVT-03017 and PT. All the other three analogues reduce comparably to the PT, the expression of ICAM-1 and do not increase the release of proinflammatory cytokines. The results highlighted that the three analogues of amygdalin with the cyanide group removed exhibit the same biological effects of PT. Therefore, they can be considered peptidomimetics, suggesting their possible use in the treatment of psoriasis.
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Affiliation(s)
- A Baroni
- Department of Experimental Medicine, Microbiology and Clinical Microbiology Section, Second University of Naples, Italy
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Pontoriero G, Santoro D, Messina A, Vitiello P, Tasco A, Milei M, Capiferri R, Bellazzi R, Flammini A, Baroni A, Morra M, Cappelli G, Mucaria S, Boggi R, Amico ME, Volzone A, D'andrea T, Paglionico C, Antonucci F, Ivaldi R, Tentori F, Bragg-Gresham J, Pisoni R, Andreucci VE, Locatelli F. [The Dialysis Outcomes and Practice Patterns Study (DOPPS): results of the Italian cohort]. G Ital Nefrol 2005; 22:494-502. [PMID: 16267807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
BACKGROUND The Dialysis Outcomes and Practice Patterns Study (DOPPS) is an international prospective, longitudinal, observational study examining the relationship between dialysis unit practices and outcomes for hemodialysis (HD) patients in seven developed countries France, Germany, Italy, Spain, United Kingdom, Japan and the United States. Results of the DOPPS in Italy are the subject of this report. METHODS A national representative sample of 20 dialysis units (21 in Germany) was randomly selected in each of the European DOPPS countries (Euro-DOPPS). In these units, the HD in-center patients were included on a facility census, and their survival rates continuously monitored. A representative sample of incident (269 in Italy, 1553 in the Euro-DOPPS) and prevalent (600 in Italy, 3038 in the Euro-DOPPS) patients was randomly selected from the census for more detailed longitudinal investigation with regard to medical history, laboratory values and hospital admission. RESULTS Comparing the Italian and Euro-DOPPS cohorts we found comparable mean age for prevalent patients (61.4 vs. 59.5 yrs), but incident patients were older in Italy. Italian prevalent patients had less cardiovascular disease, more satisfactory nutritional status and more frequent use of native vascular access. These data were associated with a comparable mortality (15.7 vs. 16.3 deaths/100 patient yrs), but morbidity was lower in Italy. Kt/V levels were comparable in the two cohorts (1.32 vs. 1.37), but 35% of Italian patients showed a Kt/V below the recommended target. Moreover, hemoglobin levels were below 11 g/dL in 60% of Italian patients. CONCLUSIONS The DOPPS results bring to light several positive aspects and the opportunity for further possible improvements for Italian patients, but at the same time highlight some critical points that could represent a risk for dialysis quality.
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Affiliation(s)
- G Pontoriero
- Divisione di Nefrologia e Dialisi, Ospedale Alessandro Manzoni, Via Dell'Eremo 9/11, 23900 Lecco, Italy.
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Buommino E, Nicoletti R, Gaeta GM, Orlando M, Ciavatta ML, Baroni A, Tufano MA. 3-O-methylfunicone, a secondary metabolite produced by Penicillium pinophilum, induces growth arrest and apoptosis in HeLa cells. Cell Prolif 2005; 37:413-26. [PMID: 15548174 PMCID: PMC6495956 DOI: 10.1111/j.1365-2184.2004.00323.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
3-O-Methylfunicone (OMF) is a secondary metabolite produced by the soil fungus Penicillium pinophilum which has cytostatic properties. The aim of this study was to investigate the mechanisms by which such properties are exerted, with special reference to any anti-proliferative and apoptotic potential, on HeLa cells. OMF treatment caused about 44% inhibition of cell growth after 24 h, and modifications in the tubulin fibre organization. In addition, a significant increase in p21 mRNA expression and a decrease in cyclin D1 and Cdk4 mRNA expression resulted at the same time. Apoptosis induction was demonstrated by the annexin V assay, cytofluorimetric analysis of the DNA content of the sub-G1 fraction and DNA laddering. Taken together, our data showed that the compound inhibits proliferation of HeLa cells by several mechanisms, such as disruption of tubulin fibres, cell cycle arrest and apoptosis induction. The capacity of the compound to affect the cell cycle and to modulate apoptosis is indicative of a potential for the development of a new agent for cancer chemotherapy.
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Affiliation(s)
- E Buommino
- Department of Experimental Medicine, Section of Microbiology and Clinical Microbiology, Second University of Naples, Italy
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Baroni A, Buommino E, Paoletti I, Orlando M, Ruocco E, Ruocco V. Pemphigus serum and captopril induce heat shock protein 70 and inducible nitric oxide synthase overexpression, triggering apoptosis in human keratinocytes. Br J Dermatol 2004; 150:1070-80. [PMID: 15214891 DOI: 10.1111/j.1365-2133.2004.05919.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Captopril is an angiotensin-converting enzyme inhibitor with sulphydryl groups in its chemical structure. It is commonly used as an antihypertensive drug. The occurrence of pemphigus vulgaris has repeatedly been reported in patients receiving captopril. The capacity of captopril and pemphigus serum to induce acantholysis, in vivo or in vitro, has been demonstrated experimentally. OBJECTIVES To show that captopril and pemphigus serum, acting by a biochemical and immunological mechanism, respectively, trigger apoptosis. METHODS Human keratinocyte cells were treated with 15 mmol L-1 captopril or with pemphigus serum. DNA was extracted and the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labelling method was used to detect apoptosis. RESULTS DNA fragmentation occurred after 72 h of treatment. Increased expression of p53, c-myc and inducible nitric oxide (NO) synthase (iNOS) mRNA were observed by polymerase chain reaction (PCR) in the treated cells compared with the untreated ones. The increase in iNOS gene expression was associated with overproduction of NO. Moreover, the addition of 1 mmol L-1N-monomethyl-L-arginine, a structural analogue of arginine, reduced nitrite levels by about 70% in cells treated with captopril or pemphigus serum. Western blot analysis revealed an overexpression of heat shock protein 70 (hsp70) in cells treated with captopril or pemphigus serum. Finally, total inhibition of the keratinocyte transglutaminase gene was shown by PCR analysis in the same samples, compared with control cells. CONCLUSIONS These data demonstrate the involvement of apoptosis in keratinocytes treated with captopril or pemphigus serum, with induction of the iNOS gene and hsp70 in the cascade of events leading to programmed cell death.
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Affiliation(s)
- A Baroni
- Clinica Dermatologica, Facoltà di Medicina e Chirurgia II, Università degli Studi di Napoli, 80131 Naples, Italy
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Casaux R, Bellizia L, Baroni A. The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins? Polar Biol 2004. [DOI: 10.1007/s00300-003-0559-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Casaux R, Baroni A, Arrighetti F, Ram�n A, Carlini A. Geographical variation in the diet of the Antarctic fur seal Arctocephalus gazella. Polar Biol 2003. [DOI: 10.1007/s00300-003-0554-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
A case of granuloma annulare that developed in a site of healed herpes zoster is reported. Polymerase chain reaction failed to detect VZV DNA in a biopsy specimen. The occurrence of different types of cutaneous reactions in a body area previously affected by herpes virus infection is known as Wolf's isotopic response. Pathogenesis may be due to a local neuroimmune dysregulation set off by herpesvirus-induced lesions of dermal sensory nerve fibres.
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Affiliation(s)
- E Ruocco
- Department of Dermatology, Second University of Naples, Naples, Italy
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Baroni A, Paoletti I, Silvestri I, Buommino E, Carriero MV. Early vitronectin receptor downregulation in a melanoma cell line during all-trans retinoic acid-induced apoptosis. Br J Dermatol 2003; 148:424-33. [PMID: 12653733 DOI: 10.1046/j.1365-2133.2003.05165.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Recent evidence assigns the vitronectin receptors (VnRs) an important role in regulating tumour cell invasion and dissemination. In vivo and in vitro studies document that all trans-retinoid acids (ATRAs) inhibit growth-inducing apoptosis in melanomas. OBJECTIVES We have analysed the effects of ATRA treatment on melanoma cell adhesion and motility. METHODS Human M14 melanoma cells were treated with 10 micromol L-1 ATRA for different times and stained with rhodamine-phalloidin to analyse the effect of treatment on cytoskeleton organization. Cell adhesion and cell migration assays were performed to analyse the role of VnRs in the ATRA-induced early stages of apoptosis. VnR expression was evaluated by Western blot, immunoprecipitation and immunocytochemistry assays. RESULTS First, using an annexin V assay, we found that apoptosis was triggered by 48 h with 10 micromol L-1 ATRA exposure. At this time point, decrease in the F-actin polymerization as well as inhibition of cell adhesive ability to vitronectin (Vn) was exerted by ATRA treatment. In the presence of serum, exposure to 10 micromol L-1 ATRA for 48 h produced a dramatic inhibition of the cell adhesion ability that was comparable with that exerted by untreated cells preincubated with anti-alpha(v)beta(3) or anti-alpha(v)beta(5) VnR monoclonal antibodies. Functionally, the treatment of melanoma cells with 10 micromol L-1 ATRA for 48 h causes an inhibition of directional cell migration towards Vn-coated filters. Therefore, we analysed the effect of ATRA on the VnR expression. Both alpha(v)beta(3) and alpha(v)beta(5) VnR levels were reduced upon exposure to 10 micromol L-1 ATRA for 48 h as shown by Western blot, immunoprecipitation and immunocytochemistry assays. CONCLUSIONS Altogether, our data indicate that treatment of M14 melanoma cells with ATRA downregulates VnR expression and that this reduction is closely correlated with the ATRA-dependent inhibition of actin-fibre organization, cell adhesion and migration. Although the mechanism by which ATRA regulates the expression of VnR in M14 melanoma cells needs further elucidation, this system may represent a model for understanding the molecular basis of ATRA therapy in melanoma.
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Affiliation(s)
- A Baroni
- Departments of Dermatology and Experimental Medicine, II University of Naples, Naples, Italy.
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Abstract
BACKGROUND Peptide T (PT) is an octapeptide shown to resolve psoriatic lesions. PT is from the V2 region of HIV-1 gp120, an exterior envelope glycoprotein that is a target for host immune responses. The anti-inflammatory mechanisms of PT are not well understood. OBJECTIVES We studied the immunomodulatory effects of PT on the human keratinocyte cells. METHODS Cultured human keratinocytes were treated with PT, proteins extracted and analysed by Western blotting and reverse transcriptase polymerase chain reaction. RESULTS Our findings show reduced expression of intercellular adhesion molecule 1 and an increase in transforming growth factor (TGF)-beta and heat shock protein (HSP)-70 in human keratinocyte cells treated with PT. The HSP-70 increase is modulated by TGF-beta. In fact, we demonstrated that anti-TGF-beta antibodies reduce HSP-70 overexpression. In addition, we show a modulation of alphav integrins after 4 hours of treatment with PT. These receptors favour keratinocyte migration and epidermal regeneration. It has been reported that overexpression of HSP results in dramatic changes to intermediate filaments. These proteins act on keratin intermediate filaments and determine their retraction. The consequence is cell-cell contact detachment and inhibition of cellular hyperproliferation. CONCLUSIONS Our results support the beneficial effect of PT found in vivo, suggesting, moreover, the primary role of keratinocytes upon which PT acts directly by stimulating the anti-inflammatory function and favouring the regeneration of tissue.
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Affiliation(s)
- M A Tufano
- Dipartimento di Medicina Sperimentale, Sezione di Microbiologia e Microbiologia Clinica, Facoltà di Medicina e Chirurgia, Seconda Università degli Studi di Napoli, Via Costantinopoli, Italy.
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Abstract
BACKGROUND The current treatment of keloids is based on surgery, medical therapy and physical treatment. The optimal treatment remains undefined. OBJECTIVE This clinical study determines the effectiveness of verapamil hydrochloride on the prevention and treatment of keloids. METHODS Two groups of patients with keloids were divided according to lesion site and age. The first group was treated by perilesional surgical excision of keloids and topical silicone, combined with adjuvant treatment of intralesional 2.5 mg/ml verapamil hydrochloride injections administered at timed intervals. The second group served as control, receiving the same treatment except the verapamil hydrochloride. RESULTS A periodical examination to check specific clinical parameters and an 18-month follow-up determined that keloids were cured in 54% of the cases in the first group, compared to 18% in the second group. Moreover, in the remaining 36% of patients in the first group in whom keloids recurred, there was an improvement in size and above all in consistence. CONCLUSION These findings suggest that verapamil hydrochloride is an effective tool for the prevention and therapy of keloids.
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Affiliation(s)
- F D'Andrea
- Department of Plastic Surgery, Second University of Naples, Italy.
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Di Micco B, Metafora S, Colonna G, Cartenì M, Ragone R, Macalello MA, Di Micco P, Baroni A, Catalanotti P, Tufano MA. Porins from Salmonella typhimurium accelerate human blood coagulation in vitro by selective stimulation of thrombin activity: implications in septic shock DIC pathogenesis. J Endotoxin Res 2002; 7:211-7. [PMID: 11581572 DOI: 10.1179/096805101101532693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The effect of porins, major hydrophobic outer membrane proteins purified from Salmonella typhimurium, on human blood coagulation was investigated. It was found that micromolar concentrations of porins accelerated markedly human blood coagulation in vitro. Using appropriate experiments, data were obtained showing that the main target of the porin-induced procoagulant effect was thrombin. A possible binding of porins with thrombin has been suggested to be the basis of this effect. The implications of this finding in the pathogenesis of the disseminated intravascular coagulation syndrome (DIC) occurring during the Gram-negative septic shock is discussed.
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Affiliation(s)
- B Di Micco
- Dipartimento di Biochimica e Biofisica Francesco Cedrangolo and Centro di Ricerca Interdipartimentale di Scienze Computazionali e Biotecnologiche, Seconda Università degli Studi di Napoli, Napoli, Italy
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Baroni A, Perfetto B, Paoletti I, Ruocco E, Canozo N, Orlando M, Buommino E. Malassezia furfur invasiveness in a keratinocyte cell line (HaCat): effects on cytoskeleton and on adhesion molecule and cytokine expression. Arch Dermatol Res 2001; 293:414-9. [PMID: 11686517 DOI: 10.1007/s004030100248] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The lipophilic yeast Malassezia furfur is a member of the cutaneous microbiota, also associated with several chronic diseases such as pityriasis versicolor, folliculitis, seborrhoeic dermatitis, and some forms of atopic dermatitis, psoriasis and confluent and reticulate papillomatosis. In this study we determined the immunomodulatory and invasive capacity of M. furfur in a human keratinocyte cell culture, HaCat. At a yeast cell to HaCat ratio of 30:1, M. furfur penetration was only 30% with poor phagolysosome fusion and with cytoskeleton modification. Transglutaminase I gene expression was also inhibited, supporting the hypothesis that M. furfur causes an initial break in the barrier function of the epidermis. Moreover, we demonstrated that M. furfur modulates proinflammatory and immunomodulatory cytokine synthesis by downregulating IL-1alpha and by inhibiting IL-6 and TNF-alpha and by upregulating IL-10 and TGF-beta1. The suppressed inflammatory response induced by M. furfur may play a role in chronic disease.
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Affiliation(s)
- A Baroni
- Istituto di Clinica Dermosifilopatica, Facoltà di Medicina e Chirurgia II, Università degli Studi di Napoli, Italy
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