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Labsi M, Soufli I, Belguendouz H, Djebbara S, Hannachi L, Amir ZC, Touil-Boukoffa C. Beneficial effect of dimethyl fumarate on experimental autoimmune uveitis is dependent of pro-inflammatory markers immunomodulation. Inflammopharmacology 2021; 29:1389-1398. [PMID: 34518966 DOI: 10.1007/s10787-021-00864-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022]
Abstract
Autoimmune uveitis is an inflammatory disease of the eye and is one of the major causes of blindness worldwide. Experimental autoimmune uveoretinitis (EAU) constitutes an animal disease model of human endogenous uveitis. In our study, we investigated the immunomodulatory effect of dimethyl fumarate (DMF) using bovine retinal extract-induced uveitis in a Female Wistar rats. To evaluate the in vivo efficacy, Female Wistar rats were divided into seven experimental groups: control group (n = 5), consisting of non-immunized animals; Uveoretinitis (n = 5), and DMF/Uveoretinitis groups (n = 15), which received a subcutaneous injection of bovine retinal extract emulsified in complete Freund's adjuvant; MC group (n = 5), treated by daily intragastric administration of methylcellulose 0.08% in tap water; DMF group, consisting of control positive group, rats received daily oral gavage administration of 500 μL of dimethyl fumarate at 100 mg/Kg dissolved in 0.08% methylcellulose in tap water (n = 5). On day 14 post immunization, the rats were then euthanized and associated indications were investigated to evaluate the therapeutic efficacy. Nitric oxide (NO) and TNF-α were assessed in plasma. Meanwhile, eyes were collected for histological and immunohistochemical studies. The retinal expression of iNOS, CD68, CD20, CD25, CD4, and CD8 was examined. Interestingly, DMF enhanced a significant reduction of NO and TNF-α production in the treated group. This effect was strongly related to the histological structure of eyes improvement. In the same context, a significant decrease of iNOS, CD68, and CD20 expression and CD25 increase expression were reported in retinal tissue of DMF/Uveoretinitis group in comparison to the immunized group. Collectively, our results indicate that DMF treatment has a beneficial effect in experimental autoimmune uveoretinitis and could constitute a good candidate for monitoring an ocular inflammatory diseases.
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Affiliation(s)
- Moussa Labsi
- Laboratory of Cellular and Molecular Biology, Team "Cytokines and NO Synthases", Department of Biology, Faculty of Biological Science, University of Sciences and Technology Houari Boumediene, BP 32, El-Alia, 16111, Algiers, Algeria
| | - Imene Soufli
- Laboratory of Cellular and Molecular Biology, Team "Cytokines and NO Synthases", Department of Biology, Faculty of Biological Science, University of Sciences and Technology Houari Boumediene, BP 32, El-Alia, 16111, Algiers, Algeria
| | - Houda Belguendouz
- Laboratory of Cellular and Molecular Biology, Team "Cytokines and NO Synthases", Department of Biology, Faculty of Biological Science, University of Sciences and Technology Houari Boumediene, BP 32, El-Alia, 16111, Algiers, Algeria
| | - Sara Djebbara
- Laboratory of Cellular and Molecular Biology, Team "Cytokines and NO Synthases", Department of Biology, Faculty of Biological Science, University of Sciences and Technology Houari Boumediene, BP 32, El-Alia, 16111, Algiers, Algeria
| | - Leila Hannachi
- Department of Anatomy and Pathological Cytology, University Hospital Center Mustapha Pacha, Algiers, Algeria
| | - Zine-Charaf Amir
- Department of Anatomy and Pathological Cytology, University Hospital Center Mustapha Pacha, Algiers, Algeria
| | - Chafia Touil-Boukoffa
- Laboratory of Cellular and Molecular Biology, Team "Cytokines and NO Synthases", Department of Biology, Faculty of Biological Science, University of Sciences and Technology Houari Boumediene, BP 32, El-Alia, 16111, Algiers, Algeria.
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Touri K, Belguendouz H, Medjeber O, Djeraba Z, Lahmar K, Touil-Boukoffa C. Propolis modulates NOS2/arginase-1 pathway in tropomyosin-induced experimental autoimmune uveitis. Inflammopharmacology 2018; 26:1293-1303. [DOI: 10.1007/s10787-018-0487-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/20/2018] [Indexed: 11/24/2022]
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Djaballah-Ider F, Djeraba Z, Chemli M, Dammene-Debbihe N, Lounis D, Belguendouz H, Medour Y, Chaib S, Touil-Boukoffa C. Influence of corticosteroid therapy on IL-18 and nitric oxide production during Behçet's disease. Inflammopharmacology 2018; 26:725-735. [PMID: 29600486 DOI: 10.1007/s10787-018-0472-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 03/23/2018] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND AIMS Behçet's disease (BD) is a chronic multisystemic inflammatory disease with complex etiopathogenesis. Th1-proinflammatory cytokines seem to be involved in its pathogenesis. Our current study aims to evaluate interleukin-18 (IL-18) and nitric oxide (NO) involvement in the development of different clinical manifestations of BD as well as to investigate the corticosteroid therapy effect on this production in Algerian patients. METHODS For this purpose, we evaluated in vivo and ex vivo IL-18, interferon-γ (IFN-γ) levels using ELISA and NO production by the Griess' method in naïve-active and corticosteroid-treated BD patients with different clinical manifestations. Additionally, we assessed CD40/CD40L expression by flow cytometrics assay in these groups of patients. RESULTS AND DISCUSSION Our results indicate that IL-18 and nitrite levels were higher in naïve-active BD patients. Interestingly, this high production differed according to the clinical manifestations and was associated with an increased risk of mucocutaneous and vascular involvement. Concerning corticosteroid treated-active BD patients, no difference was observed in this production between each clinical subgroup. However, IFN-γ levels increased in all categories of active patients. Interestingly, corticosteroid therapy reduced significantly these inflammatory mediators regardless of the clinical manifestations studied. In addition, the CD40/CD40L expression differed according to the clinical presentations. CONCLUSION Collectively, our results suggest that concomitant high production of IL-18 and NO in naïve-active BD patients is related to an increased risk of mucocutaneous lesions and vascular involvement. Moreover, the relationship between these two inflammatory markers could constitute a predictable tool of BD clinical presentations and an early factor of therapy efficiency.
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Affiliation(s)
| | - Zineb Djeraba
- Universite des Sciences et de la Technologie Houari Boumediene, Algiers, Algeria
| | - Mourad Chemli
- Service de Medecine Interne, Hopital Dr Md Seghir NEKKACHE, Algiers, Algeria
| | | | - Doulkifly Lounis
- Service de Medecine Interne, Hopital Dr Md Seghir NEKKACHE, Algiers, Algeria
| | - Houda Belguendouz
- Universite des Sciences et de la Technologie Houari Boumediene, Algiers, Algeria
| | - Yanis Medour
- Service d'Immunologie, Hopital Dr Md Seghir NEKKACHE, Algiers, Algeria
| | - Samia Chaib
- Service d'Immunologie, Hopital Dr Md Seghir NEKKACHE, Algiers, Algeria
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Djeraba Z, Benlabidi F, Djaballah-Ider FZ, Medjeber O, Arroul-Lammali A, Belguendouz H, Otmani F, Touil-Boukoffa C. Vitamin D status in Algerian Behçet’s disease patients: an immunomodulatory effect on NO pathway. Immunopharmacol Immunotoxicol 2017; 39:243-250. [DOI: 10.1080/08923973.2017.1327967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Zineb Djeraba
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Fatiha Benlabidi
- Internal Medicine Service at Mustapha Bacha Hospital, Algiers, Algeria
| | - Fatma Zohra Djaballah-Ider
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Oussama Medjeber
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Amina Arroul-Lammali
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Houda Belguendouz
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Fifi Otmani
- Internal Medicine Service at Mustapha Bacha Hospital, Algiers, Algeria
| | - Chafia Touil-Boukoffa
- Cytokines and NO Synthases Team, Laboratory of Cellular and Molecular Biology (LBCM), Biological Sciences Faculty, University of Sciences and Technology Houari Boumediene (USTHB), Algiers, Algeria
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Arroul-Lammali A, Rahal F, Chetouane R, Djeraba Z, Medjeber O, Ladjouze-Rezig A, Touil-Boukoffa C. Ex vivo all-trans retinoic acid modulates NO production and regulates IL-6 effect during rheumatoid arthritis: a study in Algerian patients. Immunopharmacol Immunotoxicol 2017; 39:87-96. [PMID: 28211306 DOI: 10.1080/08923973.2017.1285919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease. The pathophysiology of RA implicates several mediators such as nitric oxide (NO) and cytokines such as interleukin-6 (IL-6), which is deeply involved in the main characteristics of RA. Furthermore, all-trans retinoic acid (ATRA) is an active vitamin A derivative well-known to have diverse immunomodulatory actions. In our study, we investigated first, the ex vivo immunomodulatory potential of ATRA on NO pathway by peripheral blood mononuclear cells (PBMCs) from Algerian RA patients. Then, we assessed the possible regulatory effect of ATRA on NO production induced by IL-6. PBMCs isolated from active and inactive RA patients and healthy controls were cultured with different concentrations of IL-6 or/with ATRA. NO production was assessed using the Griess method. Inducible nitric oxide synthase expression and NF-κB activity were analyzed by immunofluorescence test. Our results revealed a high NO production during active RA. We noticed that while IL-6 induced a high NO production and iNOS expression, ATRA downregulated both. ATRA also inhibited nuclear NF-κB translocation. Interestingly, it seems that NO production mediated by IL-6 on PBMCs of RA patients is downregulated by ATRA. Taken together, our results highlight the immunomodulatory effect of ATRA on NO pathway in RA patients and its possible role in regulating IL-6-mediated NO production. All these findings suggest its potential therapeutic role during RA.
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Affiliation(s)
- Amina Arroul-Lammali
- a Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Team, Faculty of Biological Sciences , USTHB (University of Sciences and Technology) , Algiers , Algeria
| | - Fadia Rahal
- b Rheumatology Department , Ben aknoun hospital EHS , Algiers , Algeria
| | - Radia Chetouane
- b Rheumatology Department , Ben aknoun hospital EHS , Algiers , Algeria
| | - Zineb Djeraba
- a Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Team, Faculty of Biological Sciences , USTHB (University of Sciences and Technology) , Algiers , Algeria
| | - Oussama Medjeber
- a Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Team, Faculty of Biological Sciences , USTHB (University of Sciences and Technology) , Algiers , Algeria
| | | | - Chafia Touil-Boukoffa
- a Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Team, Faculty of Biological Sciences , USTHB (University of Sciences and Technology) , Algiers , Algeria
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Expression Profile of Cationic Amino Acid Transporters in Rats with Endotoxin-Induced Uveitis. Mediators Inflamm 2016; 2016:6586857. [PMID: 27413255 PMCID: PMC4927963 DOI: 10.1155/2016/6586857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 05/23/2016] [Indexed: 11/17/2022] Open
Abstract
Purpose. The transcellular arginine transportation via cationic amino acid transporter (CAT) is the rate-limiting step in nitric oxide (NO) synthesis, which is crucial in intraocular inflammation. In this study, CAT isoforms and inducible nitric oxide synthase (iNOS) expression was investigated in endotoxin-induced uveitis (EIU). Methods. EIU was induced in Lewis rats by lipopolysaccharide (LPS) injection. In the treatment group, the rats were injected intraperitoneally with the proteasome inhibitor bortezomib before EIU induction. After 24 hours, leukocyte quantification, NO measurement of the aqueous humor, and histopathological examination were evaluated. The expression of CAT isoforms and iNOS was determined by reverse transcription-polymerase chain reaction, western blotting, and immunofluorescence staining. Nuclear factor-kappa B (NF-κB) binding activity was evaluated by electrophoretic mobility shift assay. The mouse macrophage cell line RAW 264.7 was used to validate the in vivo findings. Results. LPS significantly stimulated iNOS, CAT-2A, and CAT-2B mRNA and protein expression but did not affect CAT-1 in EIU rats and RAW 264.7 cells. Bortezomib attenuated inflammation and inhibited iNOS, CAT-2A, and CAT-2B expression through NF-κB inhibition. Conclusions. CAT-2 and iNOS, but not CAT-1, are specifically involved in EIU. NF-κB is essential in the induction of CAT-2 and iNOS in EIU.
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Immunopathogenesis of ocular Behçet's disease. J Immunol Res 2014; 2014:653539. [PMID: 25061613 PMCID: PMC4100451 DOI: 10.1155/2014/653539] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 06/10/2014] [Indexed: 12/12/2022] Open
Abstract
Behçet's disease (BD) is a chronic recurrent systemic inflammatory disorder of unknown etiology characterized by oral and genital ulcerations, skin lesions, and uveitis. The ocular involvement of BD, or Behçet's uveitis (BU), is characterized by panuveitis or posterior uveitis with occlusive retinal vasculitis and tends to be more recurrent and sight threatening than other endogenous autoimmune uveitides, despite aggressive immunosuppression. Although pathogenesis of BD is unclear, researches have revealed that immunological aberrations may be the cornerstone of BD development. General hypothesis of BD pathogenesis is that inflammatory response is initiated by infectious agents or autoantigens in patients with predisposing genetic factors and perpetuated by both innate and acquired immunity. In addition, a network of immune mediators plays a substantial role in the inflammatory cascade. Recently, we found that the immunopathogenesis of BU is distinct from other autoimmune uveitides regarding intraocular effector cell profiles, maturation markers of dendritic cells, and the cytokine/chemokine environment. In addition, accumulating evidence indicates the involvement of Th17 cells in BD and BU. Recent studies on genetics and biologics therapies in refractory BU also support the immunological association with the pathogenesis of BU. In this review, we provide an overview of novel findings regarding the immunopathogenesis of BU.
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Djeraba Z, Boumedine K, Arroul-Lammali A, Otmani F, Belguendouz H, Touil-Boukoffa C. Ex vivo immunomodulatory effect of all-trans-retinoic acid during Behçet's disease: a study in Algerian patients. Immunopharmacol Immunotoxicol 2013; 36:78-86. [PMID: 24369064 DOI: 10.3109/08923973.2013.873048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Uveitis, recurrent oral and genital ulcerations associated with skin lesions are the major symptoms of a chronic multisystemic inflammatory disorder known as Behçet's disease (BD). High prevalence of this dreaded disease has been observed in the Mediterranean basin, including Algeria and along the Silk Road. Although the etiologic agent of this disease remains uncertain, many hypotheses have been advanced in its pathogenesis. Our team has previously reported high levels of nitric oxide (NO) in sera of BD patients, suggesting its deleterious effect during chronic inflammation. In our current study, the aim is to investigate the ex vivo immunomodulatory effect of all-trans-retinoic acid (ATRA) on NO pathway in Algerian BD patients. First, peripheral blood mononuclear cells isolated from active and inactive BD patients and healthy controls were cultured with different concentrations of ATRA. NO production was estimated with the Griess method. To elucidate the underlying mechanisms of ATRA effect on NO production, we analyze inducible nitric oxide synthase expression and nuclear factor-κB (NF-κB) activity by immunofluorescence test. Our results revealed a higher production of NO in active BD compared with the inactive stage and healthy controls. We observed that ATRA inhibits NO production in BD both in active and inactive stages and inhibits NF-κB translocation. In conclusion, we report a relationship between NO production and the disease activity. ATRA down-regulates NO production in BD patients. This immunomodulatory effect seems to be mediated through NF-κB pathway. All these findings suggest that ATRA could be considered as a promising therapy for BD.
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Affiliation(s)
- Zineb Djeraba
- USTHB (University of Sciences and Technology), Laboratory of Cellular and Molecular Biology (LBCM), Cytokines and NO Synthases Team, Faculty of Biological Science , Algiers , Algeria and
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Arroul-Lammali A, Djeraba Z, Belkhelfa M, Belguendouz H, Hartani D, Lahlou-Boukoffa O, Touil-Boukoffa C. Early involvement of nitric oxide in mechanisms of pathogenesis of experimental autoimmune uveitis induced by interphotoreceptor retinoid-binding protein (IRBP). J Fr Ophtalmol 2012; 35:251-9. [DOI: 10.1016/j.jfo.2011.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 05/11/2011] [Accepted: 05/13/2011] [Indexed: 11/30/2022]
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Yadav UCS, Shoeb M, Srivastava SK, Ramana KV. Amelioration of experimental autoimmune uveoretinitis by aldose reductase inhibition in Lewis rats. Invest Ophthalmol Vis Sci 2011; 52:8033-41. [PMID: 21900376 PMCID: PMC3208000 DOI: 10.1167/iovs.11-7485] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 07/06/2011] [Accepted: 08/30/2011] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Recently, the authors showed that the inhibition of aldose reductase (AR) prevents bacterial endotoxin-induced uveitis in rats. They have now investigated the efficacy of AR inhibitors in the prevention of experimental autoimmune-induced uveitis (EAU) in rats. METHODS Lewis rats were immunized with bovine interphotoreceptor retinoid-binding peptide (IRBP) to develop EAU. Two or 8 days after immunization, the rats started receiving the AR inhibitor fidarestat (7 mg/kg/d; intraperitoneally). They were killed when the disease was at its peak; aqueous humor (AqH) was collected from one eye, and the other eye of each rat was used for histologic studies. The protein concentration and the levels of inflammatory markers were determined in AqH. Immunohistochemical analysis of eye sections was performed to determine the expression of inflammatory markers. The effect of AR inhibition on immune response was investigated in isolated T lymphocytes. RESULTS Immunization of rats by IRBP peptide resulted in a significant infiltration of leukocytes in the posterior and the anterior chambers of the eye. Further, EAU caused an increase in the concentration of proteins, inflammatory cytokines, and chemokines in AqH, and the expression of inflammatory markers such as inducible-nitric oxide synthase and cycloxygenase-2 in the rat eye ciliary bodies and retina. Treatment with fidarestat significantly prevented the EAU-induced ocular inflammatory changes. AR inhibition also prevented the proliferation of spleen-derived T cells isolated from EAU rats in response to the IRBP antigen. CONCLUSIONS These results suggest that AR could be a novel mediator of bovine IRBP-induced uveitis in rats.
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Affiliation(s)
- Umesh C. S. Yadav
- From the Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
| | - Mohammad Shoeb
- From the Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
| | - Satish K. Srivastava
- From the Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
| | - Kota V. Ramana
- From the Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas
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Belguendouz H, Messaoudène D, Lahmar K, Ahmedi L, Medjeber O, Hartani D, Lahlou-Boukoffa O, Touil-Boukoffa C. Interferon-γ and nitric oxide production during Behçet uveitis: immunomodulatory effect of interleukin-10. J Interferon Cytokine Res 2011; 31:643-51. [PMID: 21510811 DOI: 10.1089/jir.2010.0148] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Uveitis is one of the major manifestations of Behçet Disease, a systemic inflammatory vasculitis. Our aim is to investigate in vivo and in vitro production of interferon (IFN)-γ and nitric oxide (NO) during Behçet uveitis (BU). Moreover, we evaluated the implication of IFN-γ and interleukin (IL)-10 in the regulation of NO production in vitro. Cytokines' concentrations were measured by ELISA, and NO levels were assessed by modified Griess's method. Our results showed that patients with active disease had significant elevation of IFN-γ and NO concentrations in both plasma and peripheral blood mononuclear cell culture supernatants compared with controls (P<0.01) or to patients with inactive disease (P<0.05). Further, IFN-γ induced significantly higher production of NO in cell culture supernatants, whereas IL-10 significantly reduced it (P<0.05). In conclusion, the elevated levels of IFN-γ in vivo and in vitro in patients with BU reflect the implication of this cytokine in the disease physiopathology. These results suggest that IFN-γ, through the induction of NO synthase 2 and the production of NO, is implicated in the genesis of the inflammatory process during active BU; whereas IL-10 seems to have protective properties.
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Affiliation(s)
- Houda Belguendouz
- Laboratoire de Biologie Cellulaire et Moléculaire, FSB-USTHB, Université Bab-Ezzouar, Algiers, Algeria
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