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Martinelli V, Albanese M, Altieri M, Annovazzi P, Arabi S, Bucello S, Caleri F, Cerqua R, Costanzi C, Cottone S, Dalla Costa G, Direnzo V, Fantozzi R, Favaretto A, Lorefice L, Montini F, Noce A, Plewnia K, Repice AM, Sacco R, Vecchio D. Gut-oriented interventions in patients with multiple sclerosis: fact or fiction? Eur Rev Med Pharmacol Sci 2022; 26:935-946. [PMID: 35179760 DOI: 10.26355/eurrev_202202_28003] [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: 06/14/2023]
Abstract
OBJECTIVE Multiple sclerosis (MS) is a chronic, inflammatory, demyelinating, disimmune disease of the central nervous system whose etiology and pathogenesis remain poorly understood, due to its complex and multifactorial nature. Evidence of a bidirectional connection linking the gut microbiome with the intestinal barrier and the immune system (the gut-brain axis) may have implications for the pathogenesis of inflammatory demyelinating diseases such as MS. This narrative review summarizes the evidence for the gut-brain axis involvement in the pathogenesis of MS and examines the role of gut-oriented interventions in MS. PATIENTS AND METHODS We reviewed all available studies in PubMed concerning gut-directed interventions and MS. This research was conducted using different combinations of pertinent keywords (multiple sclerosis, immune-mediated inflammatory diseases, autoimmune diseases, first demyelinating event, neurocognition, neurological disorders, neurology practice, risk factors, taxonomic biomarkers, nutrition, diet, dietary additives, complementary treatment, gut bacteria, gut microbiome, microbiome, gut-brain axis, epidemiology, alpha-linolenic acid, fermentative metabolites, fat, saturated fat, monounsaturated fat, polyunsaturated fat, omega-3 fatty acids, calorie restricted diet, fasting, fecal microbiome, fecal microbiota transplantation, animal testing). RESULTS There is an emerging evidence that alterations in the gut microbiome and increased intestinal permeability may be causative factors in the complex interplay between nutrition, metabolic status and the immune-inflammatory response in patients with MS. This suggests the possibility that modification of lifestyle and the microbiome, for example by specific diets or fecal microbiota transplantation, supplementation with bile acids and intestinal barrier enhancers, may positively influence the pathogenesis of MS. CONCLUSIONS Although the role of nutritional factors in the pathogenesis of MS remains to be established, there is evidence that appropriate gut-directed interventions such as diet, nutritional supplementation or fecal transplantation may modulate the inflammatory response and improve the course of MS as a complementary treatment in the disease.
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Affiliation(s)
- V Martinelli
- Neurology Unit, Department of Neurology, MS Center, Ospedale San Raffaele, Milan, Italy.
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2
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Tortorella C, Solaro C, Annovazzi P, Boffa L, Buscarinu MC, Buttari F, Calabrese M, Cavalla P, Cocco E, Cordioli C, De Luca G, Di Filippo M, Fantozzi R, Ferraro D, Gajofatto A, Gallo A, Lanzillo R, Laroni A, Fermo SL, Malucchi S, Maniscalco GT, Moccia M, Nociti V, Paolicelli D, Pesci I, Prosperini L, Ragonese P, Tomassini V, Clerici VLAT, Rodegher M, Gherardi M, Gasperini C. Informing MS patients on treatment options: a consensus on the process of consent taking. Neurol Sci 2020; 41:2249-2253. [PMID: 32240416 DOI: 10.1007/s10072-020-04339-z] [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] [Received: 07/31/2019] [Accepted: 03/13/2020] [Indexed: 10/24/2022]
Abstract
In the last years, change in multiple sclerosis (MS) therapeutic scenario has highlighted the need for an improved doctor-patient communication in advance of treatment initiation in order to allow patient's empowerment in the decision-making process. AIMS: The aims of our project were to review the strategies used by Italian MS specialists to inform patients about treatment options and to design a multicentre shared document that homogenizes the information about disease-modifying treatment (DMTs) and the procedure of taking informed consent in clinical practice. RESULTS: The new resource, obtained by consensus among 31 neurologists from 27 MS Centres in Italy with the supervision of a medico-legal advisor, received the aegis of Italian Neurological Society (SIN) and constitutes a step toward a standardized decision process around DMTs in MS.
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Affiliation(s)
- C Tortorella
- Department of Neurosciences, San Camillo Forlanini Hospital, Rome, Italy.
| | - C Solaro
- Department of Rehabilitation, Mons L Novarese Hospital, Moncrivello, Italy
| | - P Annovazzi
- Multiple Sclerosis Center, ASST Valle Olona, PO di Gallarate, (VA), Italy
| | - L Boffa
- Department of Neurosciences, MS Center, Tor Vergata University, Rome, Italy
| | - M C Buscarinu
- Department of Neurosciences, Mental Health and Sensory Organs Sapienza University Rome, Rome, Italy
| | - F Buttari
- I.R.C.C.S. Istituto Neurologico Mediterraneo NEUROMED, Pozzilli, Italy
| | - M Calabrese
- Neurology B, Department of Neurosciences Biomedicine and Movements, University of Verona, Verona, Italy
| | - P Cavalla
- MS Center (P.C.), City of Health & Science University Hospital, Turin, Italy
| | - E Cocco
- Department Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - C Cordioli
- Multiple Sclerosis Center, ospedale di Montichiari, Spedali Civili di Brescia, Montichiari, Italy
| | - G De Luca
- Neurology Clinic, Multiple Sclerosis Center SS. Annunziata Hospital, Chieti, Italy
| | - M Di Filippo
- Clinica Neurologica, Dipartimento di Medicina, Università di Perugia, Perugia, Italy
| | - R Fantozzi
- I.R.C.C.S. Istituto Neurologico Mediterraneo NEUROMED, Pozzilli, Italy
| | - D Ferraro
- Department of Biomedical, Metabolic and Neurosciences, University of Modena and Reggio Emilia, Modena, Italy
| | - A Gajofatto
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - A Gallo
- Department of Medical, Surgical, Neurological, Metabolic and Aging Science, University of Campania, Naples, Italy
| | - R Lanzillo
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Science and Odontostomatology, Federico II University, Naples, Italy
| | - A Laroni
- Department of Neuroscience, Ophthalmology, Genetics, Maternal and Child Health and Center of Excellence for Biomedical Research, University of Genova, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - S Lo Fermo
- Clinica Neurologica A.O.U. Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - S Malucchi
- Neurologia 2-CRESM, AOU San Luigi Gonzaga, Orbassano, Italy
| | - G T Maniscalco
- Department of Neurology and Stroke Unit, "A. Cardarelli Hospital", Naples, Italy
| | - M Moccia
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Science and Odontostomatology, Federico II University, Naples, Italy.,Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - V Nociti
- Istituto di Neurologia, Fondazione Policlinico Universitario 'A Gemelli' IRCCS, Rome, Italy
| | - D Paolicelli
- Department of Basic Medical Sciences, Neurosciences, and Sense Organs, University of Bari, Bari, Italy
| | - I Pesci
- Ospedale di Vaio, Centro SM, Fidenza, Parma, Italy
| | - L Prosperini
- Department of Neurosciences, San Camillo Forlanini Hospital, Rome, Italy
| | - P Ragonese
- Department of Biomedicine, Neurosciences and Advanced Diagnostic, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Palermo, Italy
| | - V Tomassini
- Department of Neurosciences, Imaging and Clinical Sciences, School of Medicine, Institute for Advanced Biomedical Technologies (ITAB), University of Chieti-Pescara "G. d'Annunzio, Chieti, Italy.,Division of Psychological Medicine and Clinical Neurosciences, Cardiff University School of Medicine, University Hospital of Wales, Cardiff, UK
| | - V L A Torri Clerici
- Neuro-immunology and Neuromuscolar Diseases Unit, IRCCS Foundation Carlo Besta Neurological Institute, Milan, Italy
| | - M Rodegher
- Department of Neurology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - M Gherardi
- SC Medicina Legale AUSL Valle D'Aosta, Aosta, Italy
| | - C Gasperini
- Department of Neurosciences, San Camillo Forlanini Hospital, Rome, Italy
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3
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Ferese R, Scorzolini L, Campopiano R, Albano V, Griguoli AM, Giardina E, Scala S, Ryskalin L, D'Alessio C, Zampatti S, Fantozzi R, Storto M, Fornai F, Gambardella S. PCR-based approach for qualitative molecular analysis of six neurotropic pathogens. Acta Virol 2017; 61:273-279. [PMID: 28854791 DOI: 10.4149/av_2017_305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the last few years, polymerase chain reaction analysis is frequently required to improve the detection of pathogen infections in central nervous system as a potential cause of neurological disorders and neuropsychiatric symptoms. The goal of this paper is to set up a fast, cheap and reliable molecular approach for qualitative detection of six neurotropic pathogens. A method based on PCR has been designed and implemented to guarantee the qualitative DNA detection of herpes simplex virus types 1 and 2 (HSVI/II), Epstein-Barr virus (EBV), cytomegalovirus (CMV), varicella-zoster virus (VZV), rubella virus (RUBV) and Toxoplasma gondii in the cerebrospinal fluid, where otherwise they are barely detectable. Each PCR assay was tested using dilutions of positive controls, which demonstrated a sensitivity allowing to detect up to 102 copies/ml in PCR and 10 copies/ml in real-time PCR for each pathogen. Once been set up, the protocol was applied to evaluate the cerebrospinal fluid from 100 patients with suspected infectious diseases of the central nervous system and 50 patients without any infection. The method allowed to identify 17 positive cerebrospinal fluid with polymerase chain reaction and 22 with real-time PCR (RT-PCR), respectively. Therefore, application of RT PCR allows a fast and sensitive evaluation of neurotropic DNA pathogens in the course of diagnostic routine within neurological units.
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Benetti E, Mastrocola R, Vitarelli G, Cutrin JC, Nigro D, Chiazza F, Mayoux E, Collino M, Fantozzi R. Empagliflozin Protects against Diet-Induced NLRP-3 Inflammasome Activation and Lipid Accumulation. ACTA ACUST UNITED AC 2016; 359:45-53. [DOI: 10.1124/jpet.116.235069] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/18/2016] [Indexed: 12/15/2022]
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Tullio F, Chiazza F, Mastrocola R, Penna C, Nigro D, Fracasso V, Alloatti G, Fantozzi R, Aragno M, Collino M, Pagliaro P. Exacerbation of myocardial ischemia/reperfusion injury induced by high-fat-high-fructose (HFHF) diet: Role of NLRP3 inflammasome. Vascul Pharmacol 2015. [DOI: 10.1016/j.vph.2015.11.062] [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: 10/22/2022]
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6
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Femminò S, Chiazza F, Mastrocola R, Tullio F, Penna C, Nigro D, Alloatti G, Cocco M, Garella D, Bertinaria M, Fantozzi R, Aragno M, Collino M, Pagliaro P. Is NLRP3 inflammasome a new pharmacological target in myocardial ischemia/reperfusion injury? Vascul Pharmacol 2015. [DOI: 10.1016/j.vph.2015.11.030] [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: 10/22/2022]
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Collino M, Benetti E, Rogazzo M, Chiazza F, Mastrocola R, Nigro D, Cutrin JC, Aragno M, Fantozzi R, Minetto MA, Thiemermann C. A non-erythropoietic peptide derivative of erythropoietin decreases susceptibility to diet-induced insulin resistance in mice. Br J Pharmacol 2014; 171:5802-15. [PMID: 25164531 PMCID: PMC4290718 DOI: 10.1111/bph.12888] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 08/01/2014] [Accepted: 08/11/2014] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND AND PURPOSE The haematopoietic activity of erythropoietin (EPO) is mediated by the classic EPO receptor (EpoR) homodimer, whereas tissue-protective effects are mediated by a heterocomplex between EpoR and the β-common receptor (βcR). Here, we investigated the effects of a novel, selective ligand of this heterocomplex - pyroglutamate helix B surface peptide (pHBSP) - in mice fed a diet enriched in sugars and saturated fats. EXPERIMENTAL APPROACH Male C57BL/6J mice were fed a high-fat high-sucrose diet (HFHS) for 22 weeks. pHBSP (30 μg·kg(-1) s.c.) was administered for the last 11 weeks. Biochemical assays, histopathological and immunohistochemical examinations and Western blotting were performed on serum and target organs (liver, kidney and skeletal muscle). KEY RESULTS Mice fed with HFHS diet exhibited insulin resistance, hyperlipidaemia, hepatic lipid accumulation and kidney dysfunction. In gastrocnemius muscle, HFHS impaired the insulin signalling pathway and reduced membrane translocation of glucose transporter type 4 and glycogen content. Treatment with pHBSP ameliorated renal function, reduced hepatic lipid deposition, and normalized serum glucose and lipid profiles. These effects were associated with an improvement in insulin sensitivity and glucose uptake in skeletal muscle. Diet-induced overproduction of the myokines IL-6 and fibroblast growth factor-21 were attenuated by pHBSP and, most importantly, pHBSP markedly enhanced mitochondrial biogenesis in skeletal muscle. CONCLUSIONS AND IMPLICATIONS Chronic treatment of mice with an EPO derivative, devoid of haematopoietic effects, improved metabolic abnormalities induced by a high-fat high-sucrose diet, by affecting several levels of the insulin signalling and inflammatory cascades within skeletal muscle, while enhancing mitochondrial biogenesis.
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Affiliation(s)
- M Collino
- Department of Drug Science and Technology, University of TurinTurin, Italy
| | - E Benetti
- Department of Drug Science and Technology, University of TurinTurin, Italy
| | - M Rogazzo
- Department of Drug Science and Technology, University of TurinTurin, Italy
| | - F Chiazza
- Department of Drug Science and Technology, University of TurinTurin, Italy
| | - R Mastrocola
- Department of Clinical and Biological Sciences, University of TurinTurin, Italy
| | - D Nigro
- Department of Clinical and Biological Sciences, University of TurinTurin, Italy
| | - J C Cutrin
- Department of Biotechnology and Sciences for the Health, University of TurinItaly
- Instituto de Investigaciones Cardiológicas, ININCA-CONICETBuenos Aires, Argentina
| | - M Aragno
- Department of Clinical and Biological Sciences, University of TurinTurin, Italy
| | - R Fantozzi
- Department of Drug Science and Technology, University of TurinTurin, Italy
| | - M A Minetto
- Division of Endocrinology, Diabetology and Metabolism, Department of Medical Sciences, University of TurinTurin, Italy
| | - C Thiemermann
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of LondonLondon, UK
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Minelli R, Occhipinti S, Gigliotti CL, Barrera G, Gasco P, Conti L, Chiocchetti A, Zara GP, Fantozzi R, Giovarelli M, Dianzani U, Dianzani C. Solid lipid nanoparticles of cholesteryl butyrate inhibit the proliferation of cancer cells in vitro and in vivo models. Br J Pharmacol 2014; 170:233-44. [PMID: 23713413 DOI: 10.1111/bph.12255] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 04/18/2013] [Accepted: 05/14/2013] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Solid lipid nanoparticles containing cholesteryl butyrate (cholbut SLN) can be a delivery system for the anti-cancer drug butyrate. These nanoparticles inhibit adhesion of polymorphonuclear and tumour cells to endothelial cells and migration of tumour cells, suggesting that they may act as anti-inflammatory and anti-tumour agents. Here we have evaluated the effects of cholbut SLN on tumour cell growth using in vitro and in vivo models. EXPERIMENTAL APPROACH Cholbut SLNs were incubated with cultures of four tumour cell lines, and cell growth was analysed by assessing viability, clonogenic capacity and cell cycle. Effects on intracellular signalling was assessed by Western blot analysis of Akt expression. The in vivo anti-tumour activity was measured in two models of PC-3 cell xenografts in SCID/Beige mice. KEY RESULTS Cholbut SLN inhibited tumour cell line viability, clonogenic activity, Akt phosphorylation and cell cycle progression. In mice injected i.v. with PC3-Luc cells and treated with cholbut SLN, . in vivo optical imaging and histological analysis showed no metastases in the lungs of the treated mice. In another set of mice injected s.c. with PC-3 cells and treated with cholbut SLN when the tumour diameter reached 2 mm, analysis of the tumour dimensions showed that treatment with cholbut SLN substantially delayed tumour growth. CONCLUSION AND IMPLICATIONS Cholbut SLN were effective in inhibiting tumour growth in vitro and in vivo. These effects may involve, in part, inhibition of Akt phosphorylation, which adds another mechanism to the activity of this multipotent drug.
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Affiliation(s)
- R Minelli
- Department of Drug Science and Technology, University of Turin, Torino, Italy
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9
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Rosa AC, Fantozzi R. The role of histamine in neurogenic inflammation. Br J Pharmacol 2014; 170:38-45. [PMID: 23734637 DOI: 10.1111/bph.12266] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [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: 12/10/2012] [Revised: 02/13/2013] [Accepted: 03/28/2013] [Indexed: 12/21/2022] Open
Abstract
The term 'neurogenic inflammation' has been adopted to describe the local release of inflammatory mediators, such as substance P and calcitonin gene-related peptide, from neurons. Once released, these neuropeptides induce the release of histamine from adjacent mast cells. In turn, histamine evokes the release of substance P and calcitonin gene-related peptide; thus, a bidirectional link between histamine and neuropeptides in neurogenic inflammation is established. The aim of this review is to summarize the most recent findings on the role of histamine in neurogenic inflammation, with particular regard to nociceptive pain, as well as neurogenic inflammation in the skin, airways and bladder.
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Affiliation(s)
- A C Rosa
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Italy.
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Scaldaferri M, Calvo C, Barilà D, Re F, Sciorsci E, Fantozzi R, Stecca S, Azzolina MC, Arione R, Cattel F. DI-093 Asymmetry of adverse drug reactions distribution between male and female patients with multiple myeloma treated with lenalidomide. Eur J Hosp Pharm 2014. [DOI: 10.1136/ejhpharm-2013-000436.264] [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: 11/03/2022] Open
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Giordano A, Lugaresi A, Confalonieri P, Granella F, Radice D, Trojano M, Martinelli V, Solari A, Giordano A, Martinelli V, Lugaresi A, Pucci E, Granella F, Trojano M, Solari A, Martinelli V, Pucci E, Messmer Uccelli M, Lugaresi A, Giordano A, Granella F, Solari A, Giordano A, Ferrari G, Martini F, Solari A, Radice D, D’Annunzio G, Lugaresi A, Farina D, Travaglini D, Pietrolongo E, Onofrj M, Torri Clerici V, Bonanno S, Brambilla L, Confalonieri P, Martinelli V, Radaelli M, Messina J, Comi G, Tortorella C, Luciannatelli E, Trojano M, Senesi C, Tsantes E, Granella F, Conti MZ, Rottoli MR, Bellantonio P, Fischetti M, Fantozzi R, Pala A, Traccis S, Di Battista G, Bianchi M, Benedetti MD, Gaetani L, Di Filippo M, Carolei A, Totaro R, Lanzillo R, Brescia Morra V, Coppola R, Cottone S, Chiavazza C, Cavalla P, Leonardi C, Aguglia U, Ziuliani C, Valla P, Sasanelli F, Valentino P, Quattrone A, Martino PG, Russo M, Vita G, Immovilli P. Implementation of the ‘Sapere Migliora’ information aid for newly diagnosed people with multiple sclerosis in routine clinical practice: a late-phase controlled trial. Mult Scler 2014; 20:1234-43. [DOI: 10.1177/1352458513519180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 12/11/2013] [Indexed: 11/16/2022]
Abstract
Background: The SIMS-Trial showed that the ‘Sapere Migliora’ information aid (IA) for newly diagnosed people with multiple sclerosis (PwMS) effectively improved patient knowledge and satisfaction with care. Objectives: The objectives of this paper are to assess the effectiveness of the IA in clinical practice and to compare the whole IA with the take-home booklet/website component alone. Methods: After updating the IA and replacing the CD with a website, a prospective, open-label non-randomised controlled trial compared the whole IA (group A, five SIMS-Trial centres) to take-home (group B, 16 centres). One month after the intervention, participants completed the MS Knowledge Questionnaire (MSKQ), care satisfaction questionnaire (COSM-R) (primary study outcomes), Hospital and Anxiety Depression Scale, and ad hoc questionnaire appraising the IA. Results: We enrolled 159 newly diagnosed PwMS (May 2012–March 2013). Drop-outs were four of 77 (5%, group A) and 11/82 (13%, group B). Primary endpoint (highest tertile both for MSKQ and COSM-R section 2 scores) was achieved by 38/77 (49%) group A and 33/82 (40%) group B ( p = 0.25). Attainment of secondary outcomes was also similar between groups. Conclusions: This study shows that the entire IA is not superior to the booklet/website alone, and that both are comparable in efficacy to the intervention arm of the SIMS-Trial. Trial registration number: ISRCTN78940214.
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Affiliation(s)
- A Giordano
- Unit of Neuroepidemiology, Foundation IRCCS Neurological Institute C. Besta, Italy
| | - A Lugaresi
- Department of Neuroscience and Imaging, University G. d’Annunzio of Chieti-Pescara, Italy
| | - P Confalonieri
- Department of Neuroimmunology, Foundation IRCCS Neurological Institute C. Besta, Italy
| | - F Granella
- Department of Neurosciences, Neurology Unit, University of Parma, Italy
| | - D Radice
- Division of Epidemiology and Biostatistics, European Institute of Oncology, Italy
| | - M Trojano
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari, Italy
| | - V Martinelli
- Department of Neurology, Scientific Institute Hospital San Raffaele, Italy
| | - A Solari
- Unit of Neuroepidemiology, Foundation IRCCS Neurological Institute C. Besta, Italy
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Minelli R, Serpe L, Pettazzoni P, Minero V, Barrera G, Gigliotti C, Mesturini R, Rosa AC, Gasco P, Vivenza N, Muntoni E, Fantozzi R, Dianzani U, Zara GP, Dianzani C. Cholesteryl butyrate solid lipid nanoparticles inhibit the adhesion and migration of colon cancer cells. Br J Pharmacol 2012; 166:587-601. [PMID: 22049973 DOI: 10.1111/j.1476-5381.2011.01768.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE Cholesteryl butyrate solid lipid nanoparticles (cholbut SLN) provide a delivery system for the anti-cancer drug butyrate. These SLN inhibit the adhesion of polymorphonuclear cells to the endothelium and may act as anti-inflammatory agents. As cancer cell adhesion to endothelium is crucial for metastasis dissemination, here we have evaluated the effect of cholbut SLN on adhesion and migration of cancer cells. EXPERIMENTAL APPROACH Cholbut SLN was incubated with a number of cancer cell lines or human umbilical vein endothelial cells (HUVEC) and adhesion was quantified by a computerized micro-imaging system. Migration was detected by the scratch 'wound-healing' assay and the Boyden chamber invasion assay. Expression of ERK and p38 MAPK was analysed by Western blot. Expression of the mRNA for E-cadherin and claudin-1 was measured by RT-PCR. KEY RESULTS Cholbut SLN inhibited HUVEC adhesiveness to cancer cell lines derived from human colon-rectum, breast, prostate cancers and melanoma. The effect was concentration and time-dependent and exerted on both cancer cells and HUVEC. Moreover, these SLN inhibited migration of cancer cells and substantially down-modulated ERK and p38 phosphorylation. The anti-adhesive effect was additive to that induced by the triggering of B7h, which is another stimulus inhibiting both ERK and p38 phosphorylation, and cell adhesiveness. Furthermore, cholbut SLN induced E-cadherin and inhibited claudin-1 expression in HUVEC. CONCLUSION AND IMPLICATIONS These results suggest that cholbut SLN could act as an anti-metastastic agent and they add a new mechanism to the anti-tumour activity of this multifaceted preparation of butyrate.
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Affiliation(s)
- R Minelli
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Torino, Italy
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Gallicchio M, Benetti E, Rosa AC, Fantozzi R. Tachykinin receptor modulation of cyclooxygenase-2 expression in human polymorphonuclear leucocytes. Br J Pharmacol 2009; 156:486-96. [PMID: 19154444 DOI: 10.1111/j.1476-5381.2008.00033.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND PURPOSE We investigated the ability of natural and synthetic selective NK receptors agonists and antagonists to modulate cyclooxygenase-2 (COX-2) expression in human polymorphonuclear leucocytes (PMNs). EXPERIMENTAL APPROACH The presence of all three tachykinin in PMNs was assessed by Western blot and PCR techniques. Natural and synthetic ligands selective for the tachykinin receptors were used to modulate COX-2 protein (measured with Western blotting) and activity [as prostaglandin E(2) (PGE(2)) output]. Effects of substance P (SP) on phosphorylation of mitogen-activated protein kinases (MAPKs) and nuclear factor-kappa B (NF-kappaB) activation were studied to analyse the signalling pathway involved in COX-2 up-regulation mediated by SP. KEY RESULTS Stimulation of NK receptors with the natural ligands SP, neurokinin A (NKA) and neurokinin B, in the pmol.L(-1)-micromol.L(-1) concentration range, modulated COX-2 expression and PGE(2) release in a concentration- and time-dependent manner. Experiments with synthetic selective agonists [Sar(9), Met(O(2))(11)]SP, [beta-Ala(8)] NKA(4-10), senktide or selective antagonists L703,606, SR48,968 or SR142801, confirmed that COX-2 up-regulation was mediated by NK receptors. We found that mainly p38, p42 and p46 MAPKs were phosphorylated by SP and SB202190, PD98059 and SP600125, which are selective inhibitors of these kinases, blocked SP-induced COX-2 expression. SP also induced nuclear translocation of NF-kappaB concentration-dependently, with a maximum effect at 1 nmol.L(-1). CONCLUSIONS AND IMPLICATIONS Human PMNs possess functional NK(1), NK(2) and NK(3) receptors, which mediate the induction of COX-2 expression and NF-kappaB activation by SP.
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Affiliation(s)
- M Gallicchio
- Department of Anatomy, Pharmacology and Forensic Medicine, University of Turin, Italy.
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Gallicchio M, Rosa AC, Dianzani C, Brucato L, Benetti E, Collino M, Fantozzi R. Celecoxib decreases expression of the adhesion molecules ICAM-1 and VCAM-1 in a colon cancer cell line (HT29). Br J Pharmacol 2007; 153:870-8. [PMID: 18084318 DOI: 10.1038/sj.bjp.0707634] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND AND PURPOSE We investigated the ability of celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, to modulate expression of ICAM-1 and VCAM-1 in the colon cancer cell line HT29. EXPERIMENTAL APPROACH We analysed the effect of celecoxib on ICAM-1 and VCAM-1 protein and mRNA expression in HT29 cells. Experiments were performed in the presence of mitogen-activated protein kinases (MAPK) inhibitors to evaluate the involvement of these kinases in this phenomenon. We evaluated adhesion of HT29 cells to FCS-coated plastic wells in the presence of celecoxib or MAPK inhibitors. Furthermore, we studied the effect of celecoxib on apoptosis. KEY RESULTS Celecoxib down-regulated ICAM-1 and VCAM-1 expression in HT29 cells in a time- and dose-dependent way. Celecoxib reduced activation of p38 and p55 c-Jun terminal NH(2) kinase (JNK) MAPKs, but did not affect p46 JNK or p42/44 MAPK phosphorylation. Pretreatment with SB202190 or SP600125, specific inhibitors of p38 and JNK MAPKs, respectively, reduced ICAM-1 and VCAM-1 expression in HT29 cells dose-dependently. Adhesion of HT29 cells to FCS-coated plastic wells was inhibited dose-dependently by celecoxib, and also by SB202190 and SP600125. Celecoxib showed a pro-apoptotic effect, inducing Bax and BID but down-regulating Bcl-2. CONCLUSIONS AND IMPLICATIONS Our findings show that celecoxib caused down-regulation of ICAM-1 and VCAM-1, affecting the adhesive properties of HT29 cells in a COX-2 independent way, inhibiting p38 and p55 MAPKs and activating a pro-apoptotic pathway.
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Affiliation(s)
- M Gallicchio
- Department of Anatomy, Pharmacology and Forensic Medicine, University of Turin, Torino, Italy.
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15
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Savarino L, Benetti D, Baldini N, Tarabusi C, Greco M, Aloisi R, Frascarelli S, Fantozzi R, Dianzani C, Mian M. A preliminaryin vitro andin vivo study of the effects of new anthraquinones on neutrophils and bone remodeling. J Biomed Mater Res A 2005; 75:324-32. [PMID: 16088894 DOI: 10.1002/jbm.a.30426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/09/2022]
Abstract
Osteolysis, that is, progressive periprosthetic bone loss, is responsible for approximately 70% of aseptic loosening and implant failure. Usually, it is due to a granulomatous reaction wear-induced, leading to macrophage and osteoclast-mediated bone resorption. At present, there is no established prophylaxis or treatment for this process. For this purpose, as a preliminary investigation, we aimed to study the effects in two directions, inhibition of proinflammatory signals, and bone remodeling activity, of two newly synthesized anthraquinone molecules [N,N'-Diethylamino-2,6-anthraquinone-disulfonamide (GR375) and N,N'-(p-ethoxyphenyl)-2,6-anthraquinone-disulfon amide (GR377)]. Among the pro-inflammatory signals, the ability of the two anthraquinones to interfere with the production of superoxide anion (O(2) (-)), which was assumed as a marker of reactive oxygen species (ROS), was evaluated in an in vitro cell model by testing phagocytes, such as human neutrophils, challenged by the chemotactic agent N-formylmethionyl-leucyl-phenylalanine (FMLP). Both compounds inhibited O(2) (-) production, in a dose-dependent way, without exerting scavenger effects. An in vivo model was applied to investigate their effect on bone remodeling. Fifty-four female Wistar rats were divided into eight groups of six animals each, and a 4-week treatment was applied in two phases. A 25 mg/kg/os dose in the first phase and 12.5-6.25 mg/kg/os doses in the second one were employed. The tibia trabecular bone at the secondary spongiosa level was analyzed, and trabecular bone volume (%TBV), trabecular thickness (TbTh), and apatite lattice parameters were measured. At the highest doses of GR375 and GR377 the %TBV and the TbTh increased by 33.2, 34.6%, and 3.6 and 9.1%, respectively, whereas crystallographic parameters were not significantly different from the untreated group. Our results suggest a simultaneous antiinflammatory and antiosteoclastic activity of both drugs that encourages to perform further research. If it will be confirmed, they could be proposed in a variety of bone diseases, in particular, when acute inflammation is associated to osteolytic processes and, eventually, in the prevention and treatment of periprosthetic osteolysis.
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Affiliation(s)
- L Savarino
- Laboratory for Pathophysiology of Orthopaedic Implants, Istituti Ortopedici Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy.
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16
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Abstract
The effect of L-glutamate (Glu) on human lymphocyte function was studied by measuring anti-CD(3) monoclonal antibody (mAb) or phytohaemagglutinin (PHA)-induced intracellular Ca(2+) ([Ca(2+)](i)) rise (Fura-2 method), and cell proliferation (MTT assay). Glu (0.001 - 100 microM) did not modify basal lymphocyte [Ca(2+)](i), but significantly potentiated the effects of anti-CD(3) mAb or PHA. Maximal [Ca(2+)](i) rises over resting cells were: 165+/-8 and 247+/-10 nM at 3.0x10(-2) mg ml(-1) anti-CD(3) mAb; 201+/-4 and 266+/-9 nM at 5.0x10(-2) mg ml(-1) PHA, in the absence or presence of 1 microM Glu, respectively. The Glu effect showed a bell-shape concentration-dependent relationship, with a maximum (+90+/-3% for anti-CD(3) mAb and +57+/-2% for PHA over Glu-untreated cells) at 1 microM. Non-NMDA receptor agonists (1 microM) showed a greater efficacy (+76+/-2% for (S)-AMPA; +78+/-4% for KA), if compared to NMDA (+46+/-2%), or Glu itself. Ionotropic Glu receptor antagonists completely inhibited the effects of the corresponding specific receptor agonists (1 microM). The IC(50) values calculated were: 0.9 microM for D-AP5; 0.6 microM for (+)-MK801; 0.3 microM for NBQX. Both NBQX and KYNA were able to abolish Glu effect. The IC(50s) calculated were: 3.4 microM for NBQX; 0.4 microM for KYNA. Glu (0.1 - 1 mM) did not change the resting cell proliferation, whereas Glu (1 mM) significant inhibited (-27+/-4%) PHA (1.0x10(-2) mg ml(-1))-induced lymphocyte proliferation at 72 h. In conclusion, human lymphocytes express ionotropic Glu receptors functionally operating as modulators of cell activation.
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Affiliation(s)
- G Lombardi
- DISCAFF Department, University of Piemonte Orientale, 28100 Novara, Italy.
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17
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Dianzani C, Lombardi G, Collino M, Ferrara C, Cassone MC, Fantozzi R. Priming effects of substance P on calcium changes evoked by interleukin-8 in human neutrophils. J Leukoc Biol 2001; 69:1013-8. [PMID: 11404389] [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: 02/20/2023] Open
Abstract
The neurokinin (NK) substance P (SP), which is a mediator of neurogenic inflammation, has been reported to prime human polymorphonuclear neutrophils (PMNs). The priming effects of SP on PMNs activated by recombinant interleukin-8 (rIL-8) were investigated. SP enhanced, in a dose- and time-dependent way, the rise in cytosolic free-calcium concentration, [Ca(2+)]i, evoked by the chemokine. The priming effects of SP were abolished by exposing PMNs to a calcium-free medium supplemented with EGTA. The C-terminal peptides SP(4-11) and SP(6-11) but not the N-terminal peptide SP(1-7) shared the priming effects of SP. The selective NK-1 receptor agonist [Sar-9, MetO2-11]SP mimicked the effects of SP, which were not reproduced by the selective NK-2 receptor agonist [betaAla-8]-NKA(4-10) or the selective NK-3 agonist senktide. Two selective NK-1 antagonists, CP96,345 and L703,606, dose dependently inhibited SP priming effects. These results demonstrated that SP primes PMNs exposed to rIL-8 and suggested that SP priming effects are receptor mediated.
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Affiliation(s)
- C Dianzani
- Department of Anatomy, Pharmacology and Forensic Medicine, University of Turin, Turin, Italy
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18
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Spadaro M, Amendolea MA, Mazzucconi MG, Fantozzi R, Di Lello R, Zangari P, Masala G. Autoimmunity in multiple sclerosis: study of a wide spectrum of autoantibodies. Mult Scler 1999; 5:121-5. [PMID: 10335521 DOI: 10.1177/135245859900500209] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [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: 11/17/2022]
Abstract
The aim of this study was to assess the frequency of organ- and nonorgan-specific autoantibodies in MS patients and evaluate whether the presence of autoantibodies is an indicator of disease activity and/or a prognosis factor. One hundred and five definite MS patients in different stages and with different course and 75 blood donors were tested for the autoantibodies TgA, TMA/TPO-A, PCA, ANA, aCl, SMA, AMA and ANCA. All patients were screened for the LAC. Autoantibodies to at least one autoantigen were found in 66.6% MS patients and in 13.3% controls (P < 0.001). The frequency of TgA, TMA/TPO-A, ANA, aCl and SMA was statistically higher in patients than in controls. Circulating ANCAs were found in seven MS, a never reported finding. An early onset of MS (< 20 years) was associated with a lower autoantibody frequency (P < 0.01) Primary and secondary progressive MS had a higher antibody frequency than relapsing-remitting (P < 0.05) or benign (P < 0.001) MS. Up to 86% of patients were autoantibody-positive during the acute stage, but only 30% of them remained positive during the remission stage (P < 0.001). A generalised immune dysregulation occurs in MS patients, mostly during the acute stages and in the progressive courses, involving activation of both autoreactive Th1-cells (mainly linked to CNS lesions) and B-cells via Th2 cells.
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Affiliation(s)
- M Spadaro
- Institute of Nervous and Mental Diseases, University of Rome La Sapienza, Italy
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19
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Spadaro M, Amendolea M, Mazzucconi M, Fantozzi R, Di Lello R, Zangari P, Masala C. Autoimmunity in multiple sclerosis: study of a wide spectrum of autoantibodies. ACTA ACUST UNITED AC 1999. [DOI: 10.1191/135245899678847211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Avanzi GC, Gallicchio M, Bottarel F, Gammaitoni L, Cavalloni G, Buonfiglio D, Bragardo M, Bellomo G, Albano E, Fantozzi R, Garbarino G, Varnum B, Aglietta M, Saglio G, Dianzani U, Dianzani C. GAS6 inhibits granulocyte adhesion to endothelial cells. Blood 1998; 91:2334-40. [PMID: 9516131] [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: 02/06/2023] Open
Abstract
GAS6 is a ligand for the tyrosine kinase receptors Rse, Axl, and Mer, but its function is poorly understood. Previous studies reported that both GAS6 and Axl are expressed by vascular endothelial cells (EC), which play a key role in leukocyte extravasation into tissues during inflammation through adhesive interactions with these cells. The aim of this work was to evaluate the GAS6 effect on the adhesive function of EC. Treatment of EC with GAS6 significantly inhibited adhesion of polymorphonuclear cells (PMN) induced by phorbol 12-myristate 13-acetate (PMA), platelet-activating factor (PAF), thrombin, interleukin-1beta (IL-1beta) and tumor necrosis factor-alpha (TNF-alpha), but not that induced by FMLP and IL-8. GAS6 did not affect adhesion to resting EC. Titration experiments showed that high concentrations of GAS6 were needed to inhibit PMN adhesion and that inhibition was dose-dependent at the concentration range of 0.1 to 1 microg/mL. One possibility was that high concentrations were needed to overwhelm the effect of endogenous GAS6 produced by EC. In line with this possibility, treatment of resting EC with soluble Axl significantly potentiated PMN adhesion. Analysis of localization of GAS6 by confocal microscopy and cytofluorimetric analysis showed that it is concentrated along the plasma membrane in resting EC and treatment with PAF induces depletion and/or redistribution of the molecule. These data suggest that GAS6 functions as a physiologic antiinflammatory agent produced by resting EC and depleted when proinflammatory stimuli turn on the proadhesive machinery of EC.
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Affiliation(s)
- G C Avanzi
- Dipartimento di Scienze Mediche, Universita di Torino, Torino, Italy
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21
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Mian M, Benetti D, Aloisi R, Rosini S, Fantozzi R, Savarino L, Stea S, Donati ME, Paganetto G, Pizzoferrato A. Effects of orally administered bisphosphonates on bone loss in a disuse osteopenia model involving the rat. Clin Exp Rheumatol 1996; 14:619-24. [PMID: 8978956] [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: 02/03/2023]
Abstract
OBJECTIVE This study was carried out to evaluate the effectiveness of two newly synthesized bisphosphonates (BPs) [Alendronate (4-amino-1-hydroxybutylidene-1, 1-bisphosphonic acid (AHBuBP)) and Neridronate (6-amino-1-hydroxyhexylidene-1,1-bisphosphonic acid (AHHexBP)], administered orally, in reducing experimentally induced bone loss. METHODS Unilateral sciatic nerve section was performed on the Sprague-Dawley rat to induce osteopenia in one of the hind limbs. Histomorphometric measurements of the tibial trabecular bone and femur ash content determinations were effected to assess the degree of osteopenia. For comparison Chlodronate (dichloromethylene-1-bisphosphonic acid (Cl2MBP) was employed as the reference drug. CONCLUSIONS The results of this investigation show that both BPs were significantly active in reducing the osteopenic process in the involved limb and were more active than Chlodronate.
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Affiliation(s)
- M Mian
- Gentili Institute, Research Division, Pisa, Italy
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22
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Brunelleschi S, Guidotto S, Viano I, Fantozzi R, Pozzi E, Ghio P, Albera C. Tachykinin activation of human alveolar macrophages in tobacco smoke and sarcoidosis: a phenotypical and functional study. Neuropeptides 1996; 30:456-64. [PMID: 8923508 DOI: 10.1016/s0143-4179(96)90010-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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] [Indexed: 02/03/2023]
Abstract
Substance P (SP) and neurokinin A (NKA), which exert bronchoconstrictor effects on human airways, are known to interact with inflammatory and immune cells, including monocyte macrophages. We have evaluated the effects of SP, NKA and the NK2 selective agonist [beta-Ala8]-NKA(4-10) on alveolar macrophages (AM) isolated from 4 healthy smokers and 4 non-smoker active pulmonary sarcoid patients. An accumulation of activated mononuclear phagocytes, as well as elevated angiotensin-converting enzyme (ACE) activity, has been evidenced in both clinical conditions. The phenotype of AMs in the studied subjects was characterized by an elevated expression of CD68+, HLA-DR+ and CD14+, CD14+ being significantly less in sarcoidosis as compared to smokers. SP, NKA and the NK2 selective agonist evoked superoxide anion (O2-) production in AMs obtained from sarcoid patients or healthy smokers. While SP acted in a non-dose-dependent manner in both conditions, NKA and [beta-Ala8]-NKA(4-10) evoked a dose-dependent respiratory burst (ED50 = 0.25 and 0.26 nM, respectively) in smokers, but not in sarcoidosis. The more marked phenotypical expression correlated well with the ability of NK2 receptors to activate AMs in smoker subjects.
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Affiliation(s)
- S Brunelleschi
- Department of Medical Sciences, University of Turin, Novara, Italy
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Dianzani C, Parrini M, Ferrara C, Fantozzi R. Effect of 4-hydroxynonenal on superoxide anion production from primed human neutrophils. Cell Biochem Funct 1996; 14:193-200. [PMID: 8888573 DOI: 10.1002/cbf.683] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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: 02/02/2023]
Abstract
HNE (4-hydroxy-2,3-trans-nonenal), and aldehydic product of lipid peroxidation, has been reported to modulate different functional parameters of human and rat neutrophils (PMNs), such as chemiluminescence, migration and some enzymatic activities, thus exerting effects that varied according to the concentration tested. Experiments were done to evaluate the effects of HNE on superoxide anion (O2-) production from human PMNs, isolated from healthy volunteers. After having tested that HNE by itself was not able to activate the cells, comparisons were made between its effects on PMNs, stimulated by either a single stimulus, N-formyl-methionyl-leucyl-phenylalanine (FMLP), or a combination of stimuli, such as FMLP and the neuropeptide substance P (SP; primed PMNs). In the concentration range tested (10(-12) - 10(-4) M), HNE inhibited FMLP-evoked O2- production with an IC50 of 11.6 +/- 1.5 x 10(-6) M; at concentrations < or = 10(-6) M, HNE enhanced O2- production elicited by FMLP + SP, while higher concentrations were inhibitory. There was a bell-shaped dose-response curve to the enhancing effects of HNE, depending on the incubation time being recorded after only short periods (< or = 5 min) of the exposure of the cells to HNE; this was not shown by structurally-related aldehydes, such as 2-nonenal and nonanal. These results suggest that low concentrations of HNE may participate in the evolution of the inflammatory process, by contributing to the activation of PMNs. The effects of high concentrations of the aldehyde may represent a mechanism which contributes to the regulation of the extent of the inflammatory response.
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Affiliation(s)
- C Dianzani
- Institute of Pharmacology and Pharmacognosy, University of Turin, Italy
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Brunelleschi S, Guidotto S, Tonso E, Viano I, Fantozzi R. Modulation by protein kinase C of the enhanced responsiveness to tachykinins in ovalbumin-sensitized guinea pig alveolar macrophages. Neuropeptides 1996; 30:249-60. [PMID: 8819149 DOI: 10.1016/s0143-4179(96)90071-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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] [Indexed: 02/02/2023]
Abstract
As previously reported, alveolar macrophages (AMs) from ovalbumin-sensitized guinea pigs present an enhanced responsiveness to tachykinins but not to N-formylmethionyl-leucyl-phenylalanine (fMLP). We have investigated the biochemical mechanisms underlying this varied responsiveness to tachykinins. The protein kinase C (PKC) activator phorbol 12-myristate 13-acetate (PMA) induced a larger superoxide anion (O2-) production in AMs from sensitized guinea pigs, as did tachykinins. Pretreatment of AMs with pertussis toxin abolished tachykinin-evoked respiratory burst, had no effect on PMA-evoked O2- production and strongly inhibited fMLP-evoked one, with no appreciable variation between control or sensitized AMs. Staurosporine and its derivative cgp 41251, significantly decreased PMA- and tachykinin-evoked O2- production in both populations, being more potent in control AMs, but exerted little effects against fMLP. Pretreatment of AMs with PMA significantly inhibited fMLP-, PMA- and tachykinin-evoked O2- production in both control and sensitized AMs. fMLP, substance P (SP), neurokinin A (NKA) and the NK2 agonist [beta-Ala8]-NKA(4-10) dose-dependently increased [3H] phorbol 12, 13 dibutyrate (PDBu) binding to control and sensitized AMs. While fMLP exerted similar effects in both populations, dose-response curves for SP1 NKA and the NK2 receptor agonist were shifted leftwards (1, 4 and 3 orders of magnitude, respectively) in sensitized AMs. These results indicate a possible PKC involvement in the enhanced responsiveness to tachykinins in actively sensitized AMs.
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Affiliation(s)
- S Brunelleschi
- Department of Medical Sciences, University of Turin, Novara, Italy
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25
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Dianzani C, Parrini M, Ferrara C, Fantozzi R. Aldehydic lipid peroxidation products modulate the activity of human neutrophils. Pharmacol Res 1995. [DOI: 10.1016/1043-6618(95)87133-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
The effects of three bisphosphonates (BPs), designated 4-amino-1-hydroxybutylidene-1, 1-bisphosphonate (AHBuBP), 6-amino-1-hydroxylidene-1, 1-bisphosphonate (AHHexBP) and chloromethylenebisphosphonate (Cl2MBP), were evaluated on the basis of their effect on the phagocytic activity, lysosomal enzyme release and superoxide anion production in the rat peritoneal macrophage (M phi). AHBuBP was found to inhibit in a concentration-dependent manner the phagocytosis of sheep red blood cells (SRBC). The same activity was seen with the phagocytosis of latex beads, although this effect was independent of calcium concentration. Conversely, AHHexBP and Cl2MBP were weak inhibitors of phagocytosis of both SRBC and latex beads. Inhibition studies on the phorbol myristate acetate-stimulated production of superoxide anion have shown all three BPs to be active. When compared with Cl2MBP, AHBuBP and AHHexBP were shown to be substantially active in inhibiting the release of beta-glucuronidase from ionophore A23187-stimulated rat peritoneal M phi.
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Affiliation(s)
- M Mian
- Gentili Institute Research Division, Pisa, Italy
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27
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Abstract
Human neutrophils have been demonstrated to possess both adenosine A1 and A2 receptors: activation of adenosine A2 receptors inhibits the respiratory burst, assayed as superoxide anion production (O-2) from cells stimulated by the bacterial peptide N-formylmethionyl-leucyl-phenylalanine (FMLP). Exposure of neutrophils to different combinations of stimuli results in synergistic or primed responses. These responses can be measured by challenging the cells either with a combination of FMLP and platelet activating factor (PAF), or with a combination of PAF and the neuropeptide substance P, which by itself does not induce O-2 production. In order to evaluate the ability of adenosine receptor agonists to inhibit O-2 production by primed or synergistically stimulated neutrophils, a non-selective adenosine receptor agonist, 2-chloroadenosine, was tested in comparison with reportedly selective ligands of adenosine A1 and A2 receptor types, N6-cyclopentyladenosine (CPA) and 2-[4-(2-carboxyethyl)phenethylamino]-5'-N-ethyl-carboxamido adenosine (CGS 21680). The order of activity CGS 21680 > 2-chloroadenosine > CPA indicates that adenosine A2 receptors mediate the inhibition of the respiratory burst even when neutrophils are primed or synergistically activated. 8-Phenyltheophylline antagonized the effects of these adenosine receptor agonists in a competitive way.
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Affiliation(s)
- C Dianzani
- Institute of Pharmacology and Pharmacognosy, University of Turin, Italy
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Silvestro L, Viano I, Macario M, Colangelo D, Montrucchio G, Panico S, Fantozzi R. Effects of heparin and its desulfated derivatives on leukocyte-endothelial adhesion. Semin Thromb Hemost 1994; 20:254-8. [PMID: 7824959 DOI: 10.1055/s-2007-1001910] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [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: 01/27/2023]
Abstract
The effect of heparin and partially desulfated heparin derivatives on thrombin and PAF-induced adhesion of PMNs to the endothelium was studied either by a fluorescence image analysis or by 111In-labeled PMNs. The results observed with these two techniques consistently indicated that heparin and O-des-heparin inhibited PMN adhesion in a dose-dependent manner. Moreover, N-des-Hep and N-O-des-Hep, even if less effective, also inhibited the adhesion of PMNs when used at high concentrations. The effect of heparin and heparin derivatives was not directed to endothelial cells but rather to PMNs, as shown by the absence of inhibitory effects, when heparins were preincubated with endothelium.
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Affiliation(s)
- L Silvestro
- Res Pharma Pharmacological Research Srl, Torino, Italy
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Bruni F, Costanzo A, Selleri S, Guerrini G, Fantozzi R, Pirisino R, Brunelleschi S. Synthesis and study of the anti-inflammatory properties of some pyrazolo[1,5-a]pyrimidine derivatives. J Pharm Sci 1993; 82:480-6. [PMID: 8395598 DOI: 10.1002/jps.2600820510] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [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: 01/30/2023]
Abstract
A series of pyrazolo[1,5-a]pyrimidin-7-ones (1c-17c) were synthesized to evaluate in vivo and in vitro effects induced by structural modifications at the 2 position of 4,7-dihydro-4-ethyl-2-phenylpyrazolo[1,5-a]pyrimidin-7-one (FPP028). This substance, which has been previously studied, is a weak inhibitor of prostaglandin biosynthesis and a nonacid analgesic and anti-inflammatory agent devoid of ulcerogenic properties. To gain more insight into the mechanism of action of this class of compounds, several in vivo tests were carried out, such as carrageenan-induced rat paw edema and pleurisy. In vitro tests include some studies of leukocyte functions, such as superoxide production and myeloperoxidase release. In vitro effects on arachidonic acid-, adenosine 5'-diphosphate-, and platelet-activating factor-induced platelet aggregation were also studied. Different anti-inflammatory activities were observed, depending on the nature of substituents at the 2 position; these differences are probably linked to the capacity of these compounds to inhibit leukotrienes and/or prostaglandin biosynthesis with different selectivity. 4,7-Dihydro-4-ethyl-2(2-thienyl)pyrazolo[1,5-a]pyrimidin-7-one (7c) proved to be the most interesting compound of the novel synthesized series, showing powerful pharmacological activity in vivo as well as in vitro, together with very weak acute toxicity.
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Affiliation(s)
- F Bruni
- Dipartimento di Scienze Farmaceutiche, Università di Firenze, Italy
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Brunelleschi S, Parenti A, Ceni E, Giotti A, Fantozzi R. Enhanced responsiveness of ovalbumin-sensitized guinea-pig alveolar macrophages to tachykinins. Br J Pharmacol 1992; 107:964-9. [PMID: 1281723 PMCID: PMC1907914 DOI: 10.1111/j.1476-5381.1992.tb13392.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [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: 12/26/2022] Open
Abstract
1. We have evaluated the ability of substance P (SP), neurokinin A (NKA) and the selective NK2 receptor agonist [beta-Ala8]-NKA(4-10) to induce superoxide anion (O2-) production and prostanoid (prostaglandin E2, thromboxane B2) release from alveolar macrophages (AMs) isolated from control or actively sensitized guinea-pigs. 2. The dose-response curves for NKA and SP were shifted to the left (three orders and one order of magnitude, respectively) in AMs isolated from sensitized animals, with no variation in maximal effects. 3. By evaluating the effects of [beta-Ala8]-NKA(4-10), we observed that not only was the concentration-response curve shifted to the left in both the functional parameters examined, but also maximal effects were significantly enhanced in AMs isolated from sensitized guinea-pigs. 4. This varied responsiveness seems to be specific for tachykinins, as it was not reproduced by another AM stimulant, the bacterial peptide N-formylmethionyl-leucyl-phenylalanine (fMLP). 5. Only small amounts of beta-glucuronidase were released following tachykinin or ovalbumin stimulation both in control and sensitized AMs. 6. These results indicate that AMs isolated from sensitized guinea-pigs show an increased responsiveness to NK2 receptor stimulation and further stress the role played by AMs in allergic lung diseases.
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Affiliation(s)
- S Brunelleschi
- Department of Pharmacology, Univ. Florence, Firenze, Italy
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31
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Dianzani C, Brunelleschi S, Viano I, Fantozzi R. Leukocyte function and its role in ischaemia and reperfusion. Pharmacol Res 1992. [DOI: 10.1016/1043-6618(92)90928-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Brunelleschi S, Ceni E, Fantozzi R. Neuropeptide-leukocyte interactions: examples of pharmacological modulation. Pharmacol Res 1992; 26 Suppl 2:42-3. [PMID: 1409320 DOI: 10.1016/1043-6618(92)90590-8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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33
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Abstract
Mammalian tachykinins dose-dependently activate guinea-pig alveolar macrophages, by interacting with tachykinin NK-2 receptors, mainly. By evaluating the effects of different NK-2 tachykinin receptor antagonists, we now provide evidence that tachykinin NK-2 receptors in guinea-pig alveolar macrophages meet the pharmacological criteria used to define the NK-2B subtype.
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Borea PA, Montesi L, Muzzolini A, Fantozzi R. Temperature dependence of [3H]PAF binding to washed human platelets. Biochem Pharmacol 1991; 41:629-30. [PMID: 1847638 DOI: 10.1016/0006-2952(91)90637-k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Our results indicate that the binding of [3H]PAF to a single class of high affinity sites on human platelets is endothermic and largely entropy-driven. The increase in entropy can be attributed to the disorganization of water molecules bound to both receptor and ligand during the binding process.
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Affiliation(s)
- P A Borea
- Istituto di Farmacologia, Università di Ferrara, Italy
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35
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Abstract
The undecapeptide substance P (SP) is known to activate different cell types involved in inflammatory and immune processes. By evaluating primed stimulation of human neutrophils, we now demonstrate that SP (10 nM-0.1 mM) dose-dependently enhances superoxide anion production from cells stimulated by the phospholipid mediator Platelet Activating Factor (PAF). We also provide evidence that neurokinin A (NKA), which is released, as well as SP, from C fibers of sensory nerves, potentiates PAF-evoked superoxide anion generation, while neurokinin B (NKB) is ineffective.
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Affiliation(s)
- S Brunelleschi
- Department of Pharmacology, University of Florence, Italy
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Benetti D, Mian M, Fantozzi R. Effects of bisphosphonates on macrophage phagocytosis. Pharmacol Res 1990. [DOI: 10.1016/s1043-6618(09)80093-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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38
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Brunelleschi S, Fantozzi R. Sensory neuropeptides activate guinea-pig alveolar macrophages. Pharmacol Res 1990; 22 Suppl 1:113-4. [PMID: 2284225 DOI: 10.1016/1043-6618(90)90834-z] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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39
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Fantozzi R, Brunelleschi S. Cellular models for drug evaluation. Pharmacol Res 1990. [DOI: 10.1016/1043-6618(90)90226-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Brunelleschi S, Vanni L, Ledda F, Giotti A, Maggi CA, Fantozzi R. Tachykinins activate guinea-pig alveolar macrophages: involvement of NK2 and NK1 receptors. Br J Pharmacol 1990; 100:417-20. [PMID: 1697194 PMCID: PMC1917800 DOI: 10.1111/j.1476-5381.1990.tb15821.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.7] [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: 12/28/2022] Open
Abstract
1. The effects of substance P (SP), neurokinin A (NKA) and neurokinin B (NKB) were evaluated on superoxide anion (O2-.) production by guinea-pig alveolar macrophages (AM). 2. SP dose-dependently (ED50 = 0.7 nM) evoked O2-. production from guinea-pig AM; the N-terminal heptapeptide, SP(1-7), was ineffective. In the presence of thiorphan (10(-5) M), an enkephalinase inhibitor, the stimulating effects of SP were not significantly modified. NKA and NKB were both able to induce O2-. production from guinea-pig AM, ED50 values being 0.1 and 1.3 nM, respectively. Therefore, the rank order of activity of natural tachykinins was NKA greater than SP greater than NKB. Tachykinin-evoked effects were quantitatively similar to those elicited by the autacoid mediator PAF-acether and less than those induced by the synthetic peptide N-formylmethionyl-leucyl-phenylalanine (FMLP). 3. The NK2 receptor agonist [beta-Ala8]-NKA (4-10) dose-dependently evoked O2-. production from guinea-pig AM; the NK1 receptor agonist [Pro9]-SP sulphone acted only at high concentrations, while the NK3 receptor agonist [Me,Phe7]-NKB was ineffective. 4. These findings indicate that guinea-pig AM possess NK2 and possibly some NK1 tachykinin receptors and further suggest tachykinin involvement in lung pathophysiology.
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41
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Montesi L, Muzzolini A, Borea PA, Fantozzi R. Human platelet activation by PAF: receptor characterization. Pharmacol Res 1989; 21 Suppl 1:119-20. [PMID: 2561199 DOI: 10.1016/s1043-6618(89)80080-5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- L Montesi
- Institute of Pharmacology, University of Ferrara, Italy
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Freimark B, Fantozzi R, Bone R, Bordin G, Fox R. Detection of clonally expanded salivary gland lymphocytes in Sjögren's syndrome. Arthritis Rheum 1989; 32:859-69. [PMID: 2546568] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Recurrent swelling of the parotid and submandibular salivary glands occurs in some patients with Sjögren's syndrome (SS). Using Southern blot methods, we analyzed immunoglobulin and T cell antigen receptor (TCAR) gene rearrangements in DNA obtained from salivary gland lymphocytes of 9 SS patients. Based on histologic appearance of the biopsy specimens, these patients were diagnosed as having myoepithelial sialadenitis. We found oligoclonal rearrangements of the kappa gene (4 patients) and lambda gene (1 patient), and oligoclonal rearrangement of the TCAR beta chain in 2 additional SS patients. Patients with Ig gene rearrangements did not show rearrangements of their TCAR gene, nor did patients with TCAR rearrangements exhibit Ig rearrangements. The observed oligoclonal rearrangements probably derive from 5-10% of the salivary gland B cells or T cells. Three of these SS patients developed non-Hodgkin's lymphoma 2-8 years after the initial biopsy. Our results suggest that minor populations of B cells or T cells may clonally expand in the salivary gland tissues of SS patients with pseudolymphoma, and that such lymphocyte expansions may be controlled by the endogenous immune response and/or medications. However, continued lymphoproliferation in these salivary gland tissues may eventually lead to emergence of a neoplastic clone that escapes immunologic control and develops into a non-Hodgkin's lymphoma as a result of a multistep process.
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Affiliation(s)
- B Freimark
- Department of Basic and Clinical Research, Research Institute of Scripps, La Jolla, CA 92037
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Brunelleschi S, Renzi D, Ledda F, Giotti A, Fantozzi R, Brink C, Benveniste J. Interference of WEB 2086 and BN 52021 with Paf-induced effects on guinea-pig trachea. Br J Pharmacol 1989; 97:469-74. [PMID: 2758225 PMCID: PMC1854517 DOI: 10.1111/j.1476-5381.1989.tb11974.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [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: 01/02/2023] Open
Abstract
1. The thienotriazolodiazepine WEB 2086 and the gingkolide BN52021 have been evaluated as antagonists of Paf-acether (Paf) by studying their effects on Paf-induced relaxation and Paf-induced prostaglandin E2 (PGE2) production in histamine-contracted guinea-pig tracheal preparations. 2. Relaxation induced by Paf 4 microM in histamine-contracted guinea-pig tracheal preparations was 39.67 +/- 3.5% (n = 30). At the same concentration, Paf significantly increased PGE2 production from histamine-contracted guinea-pig tracheal preparations. 3. WEB 2086 inhibited in a dose-related manner (IC50 = 21.2 nM) the relaxant effect induced by Paf and, at 1 microM, suppressed Paf-induced release of PGE2. 4. BN 52021 100 microM inhibited to about 60% Paf-induced relaxation of histamine-contracted guinea-pig tracheal preparations, but completely abolished Paf-induced increase in PGE2. 5. Both antagonists had no effects on relaxations induced by arachidonic acid 10 microM or PGE2 0.1-1 microM in histamine-contracted guinea-pig tracheal preparations. 6. The results are consistent with the presence of specific Paf receptors in guinea-pig trachea and indicate that a relaxant prostanoid, namely PGE2, at least partially mediates Paf-induced relaxation in this experimental model.
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Affiliation(s)
- S Brunelleschi
- Department of Pharmacology, Univ. Florence, Firenze, Italy
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Mian M, Benetti D, Rosini S, Fantozzi R. Effects of diacerein on the quantity and phagocytic activity of thioglycollate-elicited mouse peritoneal macrophages. Pharmacology 1989; 39:362-6. [PMID: 2634854 DOI: 10.1159/000138623] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Diacerein (DAR: 1,8-diacetoxy-9,10-dioxo-dihydroanthracene-3-carboxylic acid) is an anthraquinone drug which displays anti-inflammatory effects in experimental animals and antirheumatic activity in humans. The drug was administered for orally for four consecutive days to mice injected intraperitoneally with thioglycollate. The following dose levels of DAR were used: 2.5, 5 and 10 mg/kg/day. At the end of the experimental period the macrophage content of peritoneal exudate was dose-dependent and significantly lower in DAR-treated mice compared with animals that were given saline orally. The macrophages isolated from the peritoneal exudate of mice that received DAR displayed a dose-dependent reduced phagocytosis. The effects of DAR were found to be similar to those of indometacin and dexamethasone, which were used as reference drugs. The ability of DAR to interfere with macrophage functioning may contribute to its overall therapeutic activity.
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Affiliation(s)
- M Mian
- Institute of Pharmacology, University of Pisa, Italy
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46
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Mannaioni PF, Fantozzi R, Giannella E, Masini E. Pathophysiological significance of the distribution of histamine receptor sub-types: a proposed dual role for histamine in inflammation and type I hypersensitivity reactions. Agents Actions 1988; 24:26-34. [PMID: 2457300 DOI: 10.1007/bf01968076] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The pathophysiological significance of histaminergic receptors located on the membranes of immunocompetent cells is reviewed. H2-receptor agonists decrease the immunological histamine release from isolated serosal mast cells and from isolated hearts taken from actively sensitised guinea-pigs. Histamine and H2-receptor agonists inhibit the generation of superoxide anion from human neutrophils activated by FMLP and by substance P. These observations lend further support to the hypothesis of an immunodepression exerted by the activation of H2-receptors, which can be converted to immunostimulation by treatment with H2-receptor antagonists.
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Affiliation(s)
- P F Mannaioni
- Department of Preclinical and Clinical Pharmacology, M. Aiazzi Mancini, University of Florence, Italy
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Fantozzi R, Caramelli L, Barattini M, Botti P, Ledda F, Masini E, Moroni F, Peruzzi S, Zorn AM, Mannaioni PF. Clinical experiences with Ro 15-1788 (anexate) in benzodiazepine and mixed-drug overdoses. Resuscitation 1988; 16 Suppl:S79-82. [PMID: 2904687 DOI: 10.1016/0300-9572(88)90009-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Benzodiazepine overdose is the most common of admission to the Toxicological Unit of the University of Florence. The aim of this study has been to evaluate the efficiency of Ro 15-1788 in benzodiazepine and mixed drug overdoses. The administration of Ro 15-1788 was followed by a quick reversal of central nervous system depression and was more effective in benzodiazepine overdoses than in mixed drug overdoses. The dose was titrated individually and the range 2-10 mg was effective according to the conditions of the patient. In some cases, the comatose state relapsed; further administration of Ro 15-1788 again promptly reversed the condition. On awakening, two patients displayed anxiety and restlessness.
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Affiliation(s)
- R Fantozzi
- Institute of Pharmacology, University of Ferrara, Italy
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Mian M, Brunelleschi S, Tarli S, Rubino A, Benetti D, Fantozzi R, Zilletti L. Rhein: an anthraquinone that modulates superoxide anion production from human neutrophils. J Pharm Pharmacol 1987; 39:845-7. [PMID: 2891826 DOI: 10.1111/j.2042-7158.1987.tb05131.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.0] [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: 01/03/2023]
Abstract
Rhein (4,5-dihydroxyanthraquinone-2-carboxylic acid), the active metabolite of diacetylrhein, which has been reported as an effective antirheumatic drug in man, inhibited superoxide anion production from human neutrophils challenged with N-formylmethionyl-leucyl-phenylalanine (FMLP: IC50, 2 x 10(-5) M) and A23186 (IC50, 10(-5) M), but not with phorbol myristate acetate. In the same concentration range (10(-6)-10(-3) M), the drug did not affect oxy-radical production by a cell-free hypoxanthine-xanthine oxidase system and exerted weak inhibitory effects on FMLP-evoked lysosomal enzyme release. Rhein inhibitory effects on neutrophil functioning may contribute to the overall therapeutic activity of the parent drug, diacetylrhein.
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Affiliation(s)
- M Mian
- Department of Preclinical and Clinical Pharmacology, University of Florence, Italy
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Masini E, Giannella E, Bani-Sacchi T, Fantozzi R, Palmerani B, Mannaioni PF. Histamine release from serosal mast cells by intermediate products of arachidonic acid metabolism. Agents Actions 1987; 20:202-5. [PMID: 2440271 DOI: 10.1007/bf02074669] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In the present paper we report the results of experiments carried out to measure the release of histamine from isolated rat mast cells during the metabolic activation of arachidonic acid. Arachidonic acid (10(-8)-10(-4) M) and the terminal products (10(-6) M) of the arachidonic acid pathways were devoid of any significant histamine releasing properties. A substantial amount of histamine was released from rat mast cells by low concentrations of arachidonic acid during incubation with prostanoid generating systems, such as guinea-pig lung microsomes, rat serosal macrophages and polymorphonuclear cells and prostaglandin-H-synthase from calf seminal vesicles. The release of histamine was not accompanied by a leakage of lactate dehydrogenase and was blocked by D-mannitol and by lipoxygenase and cyclooxygenase pathway inhibitors. The data are consistent with the hypothesis that free radical derivatives of arachidonic acid, originating from hydroperoxy fatty acids, are generated during catalysis, causing mast cell histamine release.
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Blandina P, Brunelleschi S, Fantozzi R, Giannella E, Mannaioni PF, Masini E. The antianaphylactic action of histamine H2-receptor agonists in the guinea-pig isolated heart. Br J Pharmacol 1987; 90:459-66. [PMID: 2882800 PMCID: PMC1917182 DOI: 10.1111/j.1476-5381.1987.tb11195.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The effects of histamine and of H1- and H2-receptor agonists on the response to specific antigen were studied in isolated hearts taken from actively sensitized guinea-pigs. Histamine and H2-receptor agonists (dimaprit, impromidine) dose-dependently decrease the positive chronotropic and inotropic effects, and the severity of arrhythmias evoked by the challenge of sensitized hearts with specific antigen. Nordimaprit and the selective H1-receptor agonist 2-pyridyl-ethyl-amine (2-PEA) did not modify the patterns of cardiac anaphylaxis. The positive inotropic and chronotropic responses of the isolated heart to exogenous histamine appear to be partly reduced in the presence of dimaprit. The H2-receptor agonists decrease the amount of histamine released during cardiac anaphylaxis which is increased by cimetidine, while nordimaprit and PEA were ineffective, indicating an inhibitory function afforded by H2-receptors in cardiac anaphylaxis.
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