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Ameur E, Sarra M, Yosra D, Mariem K, Nabil A, Lynen F, Larbi KM. Correction to: Chemical composition of essential oils of eight Tunisian Eucalyptus species and their antibacterial activity against strains responsible for otitis. BMC Complement Med Ther 2021; 21:241. [PMID: 34583664 PMCID: PMC8477558 DOI: 10.1186/s12906-021-03412-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Elaissi Ameur
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5000, Monastir, Tunisia.
| | - Moumni Sarra
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5000, Monastir, Tunisia
| | - Derbali Yosra
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5000, Monastir, Tunisia
| | - Khouja Mariem
- University of Carthage, The National Research Institute of Rural Engineering, Water and Forestry, INRGREF, Laboratory of Management and Valorization of Forest Resources, BP 10, 2080, Ariana, Tunisia
| | - Abid Nabil
- Laboratory of Transmissible Diseases and Biological Active Substances LR99ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.,High Institute of Biotechnology of Sidi Thabet, University of Manouba, Manouba, Tunisia
| | - Frederic Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4 Bis, B-9000, Ghent, Belgium
| | - Khouja Mohamed Larbi
- University of Carthage, The National Research Institute of Rural Engineering, Water and Forestry, INRGREF, Laboratory of Management and Valorization of Forest Resources, BP 10, 2080, Ariana, Tunisia
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Ameur E, Sarra M, Yosra D, Mariem K, Nabil A, Lynen F, Larbi KM. Chemical composition of essential oils of eight Tunisian Eucalyptus species and their antibacterial activity against strains responsible for otitis. BMC Complement Med Ther 2021; 21:209. [PMID: 34384412 PMCID: PMC8359536 DOI: 10.1186/s12906-021-03379-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 09/22/2020] [Accepted: 07/15/2021] [Indexed: 01/09/2023] Open
Abstract
Background The chemical composition and biological activity of Eucalyptus essential oils have been studied extensively (EOs). A few of them were tested for antibacterial effectiveness against otitis strains. The chemical composition and antibacterial activity of the EOs of eight Tunisian Eucalyptus species were assessed in the present study. Methods Hydrodistillation was used to extract EOs from the dried leaves of eight Eucalyptus species: Eucalyptus accedens, Eucalyptus punctata, Eucalyptus robusta, Eucalyptus bosistoana, Eucalyptus cladocalyx, Eucalyptus lesouefii, Eucalyptus melliodora and Eucalyptus wandoo. They are assessed by GC/MS and GC/FID and evaluated for antibacterial activity using agar diffusion and broth microdilution techniques against three bacterial isolates (Haemophilus influenzae, Haemophilus parainfluenzae, Klebsiella pneumoniae) and three reference bacteria strains (Pseudomonas aeruginosa, ATTC 9027; Staphylococcus aureus, ATCC 6538; and Escherichia coli, ATCC 8739). Furthermore, the selected twenty-one major compounds and all values of the inhibition zone diameters were subjected to further statistical analysis using PCA and HCA. Results The EO yields of the studied Eucalyptus species range from 1.4 ± 0.4% to 5.2 ± 0.3%. Among all the species studied, E. lesouefii had the greatest mean percentage of EOs. The identification of 128 components by GC (RI) and GC/MS allowed for 93.6% – 97.7% of the total oil to be identified. 1,8-cineole was the most abundant component found, followed by α-pinene, p-cymene, and globulol. The chemical components of the eight EOs, extracted from the leaves of Eucalyptus species, were clustered into seven groups using PCA and HCA analyses, with each group forming a chemotype. The PCA and HCA analyses of antibacterial activity, on the other hand, identified five groups. Conclusion The oils of E. melliodora, E. bosistoana, and E. robusta show promise as antibiotic alternatives in the treatment of otitis media. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-021-03379-y.
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Affiliation(s)
- Elaissi Ameur
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5019, Monastir, Tunisia.
| | - Moumni Sarra
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5019, Monastir, Tunisia
| | - Derbali Yosra
- Chemical, Pharmacological and Gallenic Development Laboratory, University of Monastir, Faculty of Pharmacy, Avenue Avicennne, 5019, Monastir, Tunisia
| | - Kouja Mariem
- University of Carthage, The National Research Institute of Rural Engineering, Water and Forestry, INRGREF, Laboratory of Management and Valorization of Forest Resources, BP 10, 2080, Ariana, Tunisia
| | - Abid Nabil
- Laboratory of Transmissible Diseases and Biological Active Substances LR99ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.,High Institute of Biotechnology of Sidi Thabet, University of Manouba, Manouba, Tunisia
| | - Frederic Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4 Bis, B-9000, Ghent, Belgium
| | - Khouja Mohamed Larbi
- University of Carthage, The National Research Institute of Rural Engineering, Water and Forestry, INRGREF, Laboratory of Management and Valorization of Forest Resources, BP 10, 2080, Ariana, Tunisia
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Caruso R, Marafini I, Franzè E, Stolfi C, Zorzi F, Monteleone I, Caprioli F, Colantoni A, Sarra M, Sedda S, Biancone L, Sileri P, Sica GS, MacDonald TT, Pallone F, Monteleone G. Defective expression of SIRT1 contributes to sustain inflammatory pathways in the gut. Mucosal Immunol 2014; 7:1467-79. [PMID: 24850427 DOI: 10.1038/mi.2014.35] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 04/15/2014] [Indexed: 02/04/2023]
Abstract
In inflammatory bowel disease (IBD), tissue damage is driven by an excessive immune response, poorly controlled by counter-regulatory mechanisms. SIRT1, a class III NAD+-dependent deacetylase, regulates negatively the expression of various proteins involved in the control of immune-inflammatory pathways, such as Stat3, Smad7, and NF-κB. Here we examined the expression, regulation, and function of SIRT1 in IBD. SIRT1 RNA and protein expression was less pronounced in whole biopsies and lamina propria mononuclear cells (LPMCs) of IBD patients in comparison with normal controls. SIRT1 expression was downregulated in control LPMC by tumor necrosis factor (TNF)-α and interleukin (IL)-21, and upregulated in IBD LPMC by neutralizing TNF-α and IL-21antibodies. Consistently, SIRT1 expression was increased in mucosal samples taken from IBD patients successfully treated with Infliximab. Treatment of IBD LPMC with Cay10591, a specific SIRT1 activator, reduced NF-κB activation and inhibited inflammatory cytokine synthesis, whereas Ex527, an inhibitor of SIRT1, increased interferon (IFN)-γ in control LPMC. SIRT1 was also reduced in mice with colitis induced by 2,4,6-trinitrobenzenesulphonic acid or oxazolone. Cay10591 prevented and cured experimental colitis whereas Ex527 exacerbated disease by modulating T cell-derived cytokine response. Data indicate that SIRT1 is downregulated in IBD patients and colitic mice and suggest that SIRT1 activation can help attenuate inflammatory signals in the gut.
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Affiliation(s)
- R Caruso
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - I Marafini
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - E Franzè
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - C Stolfi
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - F Zorzi
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - I Monteleone
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - F Caprioli
- Unit of Gastroenterology, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - A Colantoni
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - M Sarra
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - S Sedda
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - L Biancone
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - P Sileri
- Department of Surgery, University of Rome "Tor Vergata", Rome, Italy
| | - G S Sica
- Department of Surgery, University of Rome "Tor Vergata", Rome, Italy
| | - T T MacDonald
- Barts and the London School of Medicine and Dentistry, London, UK
| | - F Pallone
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - G Monteleone
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
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Monteleone I, Sarra M, Pallone F, Monteleone G. Th17-related cytokines in inflammatory bowel diseases: friends or foes? Curr Mol Med 2012; 12:592-7. [PMID: 22515978 DOI: 10.2174/156652412800620066] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 12/16/2011] [Accepted: 12/24/2011] [Indexed: 12/12/2022]
Abstract
T helper (Th)17 cells and other interleukin (IL)-17-producing cells are supposed to play critical roles in several human immune-mediated diseases, including Crohn's disease (CD) and ulcerative colitis (UC), the main forms of inflammatory bowel diseases (IBD) in man. Th17 cells infiltrate massively the inflamed intestine of IBD patients and in vitro and in vivo studies have shown that Th17-type cytokines may trigger and amplify multiple inflammatory pathways. Nonetheless, some Th17-related cytokines, such as interleukin (IL)-17A and IL-22, may target gut epithelial cells and promote the activation of counter-regulatory mechanisms. This observation together with the demonstration that Th17 cells are not stable and can be converted into either regulatory T cells or Th1 cells if stimulated by immune-suppressive (e.g. TGF-β1) or inflammatory (e.g. IL-12, IL-23) cytokines have contributed to advance our understanding of mechanisms that regulate mucosal homeostasis and inflammation in the gut.
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Affiliation(s)
- I Monteleone
- Dipartimento di Medicina Interna, Universita Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy.
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Rovedatti L, Kudo T, Biancheri P, Sarra M, Knowles CH, Rampton DS, Corazza GR, Monteleone G, Di Sabatino A, Macdonald TT. Differential regulation of interleukin 17 and interferon gamma production in inflammatory bowel disease. Gut 2009; 58:1629-36. [PMID: 19740775 DOI: 10.1136/gut.2009.182170] [Citation(s) in RCA: 270] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Interleukin 17 (IL17) is now known to be involved in a number of chronic inflammatory disorders. However, the mechanisms regulating its production in inflammatory bowel disease (IBD) are still unclear. METHODS Endoscopic biopsies or surgical specimens were taken from inflamed and uninflamed colonic mucosa of 72 patients with IBD (38 with Crohn's disease and 34 with ulcerative colitis), and normal colon of 38 control subjects. IL17 and interferon gamma (IFNgamma) were detected by ELISA in the supernatants of biopsies cultured ex vivo, and anti-CD3/CD28-stimulated lamina propria mononuclear cells (LPMCs) incubated with IL12, IL23, IL1beta plus IL6, transforming growth factor beta1 (TGFbeta1), or anti-IL21 neutralising antibody. Intracellular flow cytometry was performed to analyse mucosal Th17 and Th1/Th17 cells. RESULTS IL17 production by organ culture biopsies was higher in IBD inflamed mucosa than IBD uninflamed mucosa and controls, and was equivalent in amount to IFNgamma. Anti-CD3/CD28-stimulated IBD LPMCs produced higher IL17 amounts compared to controls. The percentages of Th17 and Th1/Th17 cells were increased in patients with IBD. IL23 and IL1beta plus IL6 had no effect on IBD LPMC production of IL17; however, IL12 markedly increased IFNgamma production and decreased IL17 production. TGFbeta1 dose-dependently decreased IFNgamma, but had no significant inhibitory effect on IL17 production. Blocking IL21 significantly downregulated IL17 production. CONCLUSIONS Our findings support a role for IL12, TGFbeta and IL21 in modulating IL17/IFNgamma production in IBD. The abundant IL17 in inflamed IBD mucosa may help explain the relative lack of efficacy of anti-IFNgamma antibodies in clinical trials of Crohn's disease.
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Affiliation(s)
- L Rovedatti
- Institute of Cell and Molecular Science, London School of Medicine and Dentistry, London E1 2AT, UK
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Fina D, Sarra M, Caruso R, Del Vecchio Blanco G, Pallone F, MacDonald TT, Monteleone G. Interleukin 21 contributes to the mucosal T helper cell type 1 response in coeliac disease. Gut 2008; 57:887-92. [PMID: 17965065 DOI: 10.1136/gut.2007.129882] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND In coeliac disease (CD), the upper bowel lesion is associated with a marked infiltration of the mucosa with Th1 cells secreting interferon gamma (IFNgamma) and expressing the Th1-associated transcription factor, T-bet. However, the molecular mechanisms which regulate T-bet and promote the Th1 cell response are unknown. OBJECTIVE To examine whether interleukin 21 (IL21), a cytokine that regulates T cell activation, has a role in CD. METHODS Duodenal mucosal samples were taken from CD patients and normal controls. IL21 and T-bet were examined by real-time PCR and western blotting, and IFNgamma was assessed by real-time PCR and ELISA. The effect of blockade of endogenous IL21 on the expression of T-bet was examined in an ex vivo culture of biopsies taken from untreated CD patients. Finally, the role of IL21 in controlling T-bet and IFNgamma was also evaluated in cultures of biopsies taken from treated CD patients and cultured with a peptic-tryptic digest of gliadin (PT) in the presence or absence of a neutralising IL21 antibody. RESULTS Enhanced IL21 RNA and protein expression was seen in duodenal samples from untreated CD patients. Blockade of IL21 activity in biopsies of untreated CD patients reduced T-bet and IFNgamma secretion. Stimulation of treated CD biopsies with PT enhanced IL21 expression, and neutralisation of IL21 largely prevented PT-driven T-bet and IFNgamma induction. CONCLUSIONS IL21 is overproduced in the mucosa of CD patients, where it helps sustain T-bet expression and IFNgamma production.
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Affiliation(s)
- D Fina
- Dipartimento di Medicina Interna e Centro di Eccellenza per lo studio delle malattie complesse e multifattoriali, Universitè Tor Vergata, Rome, Italy
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Stolfi C, Fina D, Caruso R, Caprioli F, Fantini MC, Rizzo A, Sarra M, Pallone F, Monteleone G. Mesalazine negatively regulates CDC25A protein expression and promotes accumulation of colon cancer cells in S phase. Carcinogenesis 2008; 29:1258-66. [DOI: 10.1093/carcin/bgn122] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Ventura L, Chiominto A, Colimberti P, Sarra M, Dal Mas A, Leocata P. [Creating low-power photomicrographs by digital scanning of histological sections]. Pathologica 2000; 92:9-12. [PMID: 10842994] [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: 02/16/2023] Open
Abstract
The recent introduction of digital film scanners in the medical-scientific field provided everyone dealing with light-microscopy an easy method to obtain low-power photomicrographs from entire histological sections. Direct scanning of the common microscope slide allows the easy creation of high quality images. The digital images obtained may be improved or retouched using dedicated software and then printed on paper or film. The required instrumentation is relatively unexpensive and neither skilled staff nor expertise of photographic techniques is required. This reduces costs and saves time. The obtained images may be employed in histopathology, embryology, histochemistry, image analysis and telepathology, and are suitable for scientific papers, educational purposes and lecturing, as well as for daily reporting. The authors bring their personal experience in this field, making also a complete literature review on the topic.
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Affiliation(s)
- L Ventura
- U.O. di Anatomia ed Istologia Patologica, Azienda USL n. 4, Ospedale San Salvatore, L'Aquila
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Costantini D, Delogu G, Lo Bosco L, Tomasello C, Sarra M. The treatment of cranio-facial pain by electroacupuncture and laser irradiation. Ann Ital Chir 1997; 68:505-9. [PMID: 9494181] [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]
Abstract
Craniofacial neuralgias represent an interesting medical challenge, especially regarding the complex therapeutical aspects. Our study was performed treating more than 700 patients, applying steel inox needles variable in diameters and length for about 20 minutes, with a total application number ranging between 10 and 20. Results have been defined referring to a 4-grades response scale: excellent, good, fairly good and insufficient. It is important to emphasise that the best results have been achieved with patients who chose the acupuncture as the first therapeutic approach, while patients who underwent other previous medical and/or surgical treatment have had a worse response. The authors assert that acupuncture and infrared laser reflex therapy represent a harmless and effective treatment of such a diffuse and invalidating disease.
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Affiliation(s)
- D Costantini
- Istituto di Anestesiologia e Rianimazione Università degli Studi di Roma La Sapienza
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Sarra M, Ison A, Lilly M. The relationships between biomass concentration, determined by a capacitance-based probe, rheology and morphology of Saccharopolyspora erythraea cultures. J Biotechnol 1996. [DOI: 10.1016/0168-1656(96)01612-4] [Citation(s) in RCA: 29] [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: 11/24/2022]
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