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Erginel B, Yanar F, Ilhan B, Yüksel S, Mikailo P, Berker N, Keskin E, Gün Soysal F. Is the increased ozone dosage key factor for its anti-inflammatory effect in an experimental model of mesenteric ischemia? ULUS TRAVMA ACIL CER 2023; 29:1069-1074. [PMID: 37791435 PMCID: PMC10644088 DOI: 10.14744/tjtes.2023.86086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/13/2023] [Accepted: 07/25/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Ischemia/reperfusion injury of the intestines is a severe surgical condition. This study aimed to reveal ozone therapy effects with relatively increased ozone dosage in a created ischemia/reperfusion injury model. METHODS In this study, 24 albino Wistar rats were examined in three groups. Rats in the control group (CG, n=8) underwent only a laparotomy. In the sham group (SG, n=8) and ozone group (OG, n=8), the superior mesenteric artery (SMA) of the rats was occluded for 1 h. After deoccluding the SMA, the abdomen was closed, physiological saline was infused intraperitoneally in the SG, and an increased ozone/oxygen mixture dose (from 0.7 mg/kg to 1 mg/kg) was infused intraperitoneally in the OG. Small intestine samples were obtained at the 24th h for histopathological examination of intestinal mucosal injury and evaluated according to the Chiu score. In addition, Malondialdehyde and Myeloperoxidase levels were evaluated for oxidant levels, whereas, Glutathione (GSH) enzyme activity was measured to evaluate the tissue antioxidant system. RESULTS Histopathologically, the Chiu score was the lowest in the CG. It was lower in the OG compared to the SG showing the ameliorating effect of ozone on the intestinal mucosa. Chiu score in the OG was higher compared to that in the CG, but not statistically significant. A significantly higher GSH level was observed in the OG compared to the SG, proving antioxidant activity. CONCLUSION In this experimental model of ischemia/reperfusion in rats, treatment with an increased ozone level decreased the inflammatory process through antioxidant mechanisms and reduced intestinal mucosal damage. However, the effectiveness of ozone therapy depends on its dosages.
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Affiliation(s)
- Basak Erginel
- Department of Pediatric Surgery, İstanbul Medical Faculty, İstanbul-Türkiye
| | - Fatih Yanar
- Department of General Surgery, Istanbul Medical Faculty, İstanbul-Türkiye
| | - Burak Ilhan
- Department of General Surgery, Istanbul Medical Faculty, İstanbul-Türkiye
| | - Seçil Yüksel
- Department of Pediatric Surgery, İstanbul Medical Faculty, İstanbul-Türkiye
| | - Parvana Mikailo
- Department of Biochemistry, Istanbul Medical Faculty, İstanbul-Türkiye
| | - Neslihan Berker
- Department of Pathology, Istanbul Medical Faculty, İstanbul-Türkiye
| | - Erbug Keskin
- Department of Pediatric Surgery, İstanbul Medical Faculty, İstanbul-Türkiye
| | - Feryal Gün Soysal
- Department of Pediatric Surgery, İstanbul Medical Faculty, İstanbul-Türkiye
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2
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Combined Oxygen-Ozone Therapy for Mesh Skin Graft in a Cat with a Hindlimb Extensive Wound. Animals (Basel) 2023; 13:ani13030513. [PMID: 36766402 PMCID: PMC9913348 DOI: 10.3390/ani13030513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
This case report describes a new therapeutic approach for a domestic shorthaired female cat, who has an extensive posttraumatic wound in the right hind limb. After patient stabilization, general anesthesia was started and the wound was cleaned and debrided of devitalized tissues, followed by the application of ozone therapy and bandage. Eight sessions of ozone therapy were performed for 17 days until the application of the skin graft. Three more sessions of ozone therapy were performed every 3 days postoperatively. The bagging method and the perilesional infiltration method were used. The ozone therapy ensured an accelerated recovery of the patient without any complications. According to our knowledge, this is the first case report with the use of ozone therapy to support a free skin graft in a cat. The new therapeutic approach could be used to accelerate healing of the wounds with a significant lack of substance, by supporting pre- and post-operative skin grafts.
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Spassim MR, Dos Santos RT, Rossato-Grando LG, Cardoso L, da Silva JS, de Souza SO, Wibelinger LM, Bertol CD. Intra-articular ozone slows down the process of degeneration of articular cartilage in the knees of rats with osteoarthritis. Knee 2022; 35:114-123. [PMID: 35306352 DOI: 10.1016/j.knee.2022.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 11/29/2021] [Accepted: 03/03/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Osteoarthritis (OA) is a joint disease of multifactorial etiology, affecting mainly the knees. We aimed to evaluate the effects of two different doses of gaseous ozone intra-articularly on the knee cartilage morphology of rats with osteoarthritis (OA). METHODS The articular lesion was induced by sodium monoiodoacetate (MIA). 40 Wistar rats were divided into 4 groups: G1 control (without lesion and without treatment), G2 articular lesion (AL) (only lesion MIA-induced), G3 AL + treatment with 5 μg/mL of ozone intra-articular, and G4 AL + treatment with 10 μg/mL of ozone intra-articular. The experiment was carried out for 60 days. RESULTS Both doses of ozone intra-articular demonstrated less reduction in joint space (G3 and G4) compared to the G2, formation of osteophytes, but without subchondral sclerosis. Ozone decreased the volumetric density of the articular lesion (VV(AL)) of tibial. The treatments recovered VV(AL) of the femur similar to G1. Ozone lower dose (G3) showed lower tibia and femur macroscopic scores. CONCLUSION Intra-articular gaseous ozone can delay the degeneration of articular cartilage and can represents an integrative therapy in the OA treatment of knee after 60 days of treatment. For the first time the role of ozone in articular cartilage degeneration was evaluated helping to understand this therapy.
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Affiliation(s)
- Marcos Roberto Spassim
- Graduate Program in Human Aging, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
| | | | - Luciana Grazziotin Rossato-Grando
- Graduate Program in Bioexperimentation, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil; College of Pharmacy, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
| | - Leonardo Cardoso
- College of Physical Education, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
| | - Julia Spanhol da Silva
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Lia Mara Wibelinger
- Graduate Program in Human Aging, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
| | - Charise Dallazem Bertol
- Graduate Program in Human Aging, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil; College of Pharmacy, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil.
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4
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Zhang W, Wu M, Chen P, Zhang J, Ma J, Cheng Y, Li X, Hu J, Li W, Du Y, Ding K, Fan Z. Effect of local ozone treatment on rats with anterior rectal resection and the possible mechanisms. Biomed Eng Online 2021; 20:79. [PMID: 34362379 PMCID: PMC8349064 DOI: 10.1186/s12938-021-00918-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Anterior resection syndrome (ARS) is characterized by the diverse and interchangeable evacuatory symptoms that may occur following distal colorectal resection. We aimed to investigate the effect and potential mechanisms of ozone perfusion on rats with anterior rectal resection (ARR). MATERIAL AND METHODS After establishment of rat ARR model, 20, 40 and 80 ug/ml ozone was used to treat rats by enema administration. The pathological examination of intestinal tissue was detected using hematoxylin-eosin staining. The rate of loose stools, minimum threshold volume of abdominal withdrawal reflex (AWR) and Bristol grade were used to evaluate the degree of abnormal defecation function. Subsequently, the levels of oxidative stress- and inflammation-related markers, 5-hydroxytryptamine (5-HT), inducible nitric oxide synthase (iNOS) and nitric oxide (NO) in the serum and intestinal tissue were determined with the corresponding kits. Meanwhile, the expression of nuclear factor kappa B (NF-κB) p65, transient receptor potential vanilloid (TRPV)1, TRPV4, iNOS and 5-HT receptor 3A (5-HTR3A) was determined with RT-qPCR and western blotting. RESULTS Ozone administration (20 and 40 ug/ml) significantly alleviated the pathological changes of intestinal tissue-induced by ARR, accompanied by the decreased loose stools rate, Bristol score and increased abdominal withdraw reflex. However, 80 ug/ml of ozone intervention played opposite roles in the aforementioned changes with 20 and 40 ug/ml of ozone. Additionally, remarkably elevated reactive oxygen species (ROS), malonaldehyde (MDA), superoxide dismutase (SOD), 5-HT, iNOS and NO levels were observed in the ozone-treated groups (20 and 40 ug/ml), while high dose of ozone drastically improved ROS, MDA, 5-HT, iNOS and NO levels but reduced the activity of SOD. Consistently, the contents of inflammatory factors were decreased after low and middle doses of ozone administration. However, high dose of ozone aggravated the inflammatory injury. Moreover, 20 and 40 ug/ml ozone upregulated TRPV1 and TRPV4 expression but downregulated 5-HTR3A expression, which was restored after 80 ug/ml of ozone intervention. Remarkably, the levels of NF-κB p65 and iNOS were dose-dependently enhanced following ozone treatment. CONCLUSIONS Taken together, low concentration of ozone attenuated intestinal injury induced by ARR via balancing oxidative stress and inflammation, but high concentration of ozone exacerbated the intestinal injury, which might be related to the 5-HT and TRPV signaling.
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Affiliation(s)
- Wei Zhang
- Department of Anesthesiology, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, 210012, Jiangsu, China
| | - Meng Wu
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Peng Chen
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Jiamin Zhang
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Jiaze Ma
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Yile Cheng
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Xiaoliu Li
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Junjie Hu
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Wanli Li
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Yuxin Du
- Nanjing University of Chinese Medicine, Nanjing, 210000, Jiangsu, China
| | - Kang Ding
- National Center of Colorectal Surgery, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, No. 157 Daming Road, Qinhuai District, Nanjing, 210012, Jiangsu, China.
| | - Zhimin Fan
- National Center of Colorectal Surgery, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, No. 157 Daming Road, Qinhuai District, Nanjing, 210012, Jiangsu, China.
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Chirumbolo S, Valdenassi L, Simonetti V, Bertossi D, Ricevuti G, Franzini M, Pandolfi S. Insights on the mechanisms of action of ozone in the medical therapy against COVID-19. Int Immunopharmacol 2021; 96:107777. [PMID: 34020394 PMCID: PMC8112288 DOI: 10.1016/j.intimp.2021.107777] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/28/2021] [Accepted: 05/06/2021] [Indexed: 02/06/2023]
Abstract
An increasing amount of reports in the literature is showing that medical ozone (O3) is used, with encouraging results, in treating COVID-19 patients, optimizing pain and symptoms relief, respiratory parameters, inflammatory and coagulation markers and the overall health status, so reducing significantly how much time patients underwent hospitalization and intensive care. To date, aside from mechanisms taking into account the ability of O3 to activate a rapid oxidative stress response, by up-regulating antioxidant and scavenging enzymes, no sound hypothesis was addressed to attempt a synopsis of how O3 should act on COVID-19. The knowledge on how O3 works on inflammation and thrombosis mechanisms is of the utmost importance to make physicians endowed with new guns against SARS-CoV2 pandemic. This review tries to address this issue, so to expand the debate in the scientific community.
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Affiliation(s)
- Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
| | - Luigi Valdenassi
- SIOOT, High School in Oxygen Ozone Therapy, University of Pavia, Italy; SIOOT INTERNATIONAL, Communian Clinic, Gorle Bergamo, Italy
| | - Vincenzo Simonetti
- SIOOT, High School in Oxygen Ozone Therapy, University of Pavia, Italy; SIOOT INTERNATIONAL, Communian Clinic, Gorle Bergamo, Italy
| | - Dario Bertossi
- Department of Surgery, Dentistry, Paediatrics and Gynaecology Unit of Maxillo-Facial Surgery University of Verona, Verona, Italy
| | | | - Marianno Franzini
- SIOOT, High School in Oxygen Ozone Therapy, University of Pavia, Italy; SIOOT INTERNATIONAL, Communian Clinic, Gorle Bergamo, Italy
| | - Sergio Pandolfi
- SIOOT, High School in Oxygen Ozone Therapy, University of Pavia, Italy; SIOOT INTERNATIONAL, Communian Clinic, Gorle Bergamo, Italy; Villa Mafalda Clinics via Monte delle Gioie, Rome, Italy
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Almeida BFMD, Amatti LZ, de Souza GG, Garcia LV, Montechiesi DF, Ignácio FS, de Oliveira PL, Costa LR, Floriano BP, Bosculo MRM, Joaquim JGF, Rubio CP. Effect of uterine ozone therapy and anticoagulant sampling on oxidative stress parameters in mares. Res Vet Sci 2021; 136:503-511. [PMID: 33878612 DOI: 10.1016/j.rvsc.2021.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/05/2021] [Accepted: 04/12/2021] [Indexed: 01/12/2023]
Abstract
With the purpose of assessing the effects of uterine ozone therapy and anticoagulant sampling on oxidative stress (OS) parameters in mares, ten mares underwent three consecutive days of uterine ozone therapy by flushing the uterus with ozonated lactated Ringer's solution followed by insufflation with ozone‑oxygen gas. Serum samples were obtained at baseline and days 3, 6, 10 and 17 to determine the effect of ozone therapy on OS markers. Plasma obtained with anticoagulants citrate, ethylenediaminetetraacetic acid (EDTA) and heparin were at baseline and 6 days following therapy to determine the effect of anticoagulant on OS parameters. Antioxidants albumin and uric acid, total antioxidant capacity (TAC) using four different methods, total oxidant capacity (TOC) and lipid peroxidation were determined through photocolorimetry. Statistical analyses comprised repeated measures ANOVA followed by Dunnett's test or Friedman followed by Dunn's post-hoc test. Differences were considered significant when p < 0.05. Uterine ozone therapy significantly decreased uric acid, TAC in all four different methods, concomitantly with an increase on TOC at days 3 and 6 following therapy. No changes were observed on albumin and lipid peroxidation levels. Anticoagulants prevented the detection of oxidative stress induced by uterine ozone therapy depending on the method of analysis. In conclusion, uterine ozone therapy causes systemic oxidative stress in mares and the choice of anticoagulant sampling interferes with laboratory tests.
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Affiliation(s)
- Breno Fernando Martins de Almeida
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil.
| | - Lidiana Zanetti Amatti
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Giovanna Gati de Souza
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Luana Venâncio Garcia
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Daniela Fernandez Montechiesi
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | | | - Paula Lima de Oliveira
- Veterinary Teaching Hospital Roque Quagliato, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Letícia Ramos Costa
- Veterinary Teaching Hospital Roque Quagliato, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Beatriz Perez Floriano
- Department of Veterinary Medicine, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | - Maria Rachel Melo Bosculo
- Veterinary Teaching Hospital Roque Quagliato, University Center of the Integrated Faculties of Ourinhos (Unifio), Ourinhos, São Paulo State, Brazil
| | | | - Camila Peres Rubio
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Regional Campus of International Excellence 'Campus Mare Nostrum', University of Murcia, Espinardo, Murcia, Spain
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7
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Izadi M, Cegolon L, Javanbakht M, Sarafzadeh A, Abolghasemi H, Alishiri G, Zhao S, Einollahi B, Kashaki M, Jonaidi-Jafari N, Asadi M, Jafari R, Fathi S, Nikoueinejad H, Ebrahimi M, Imanizadeh S, Ghazale AH. Ozone therapy for the treatment of COVID-19 pneumonia: A scoping review. Int Immunopharmacol 2021; 92:107307. [PMID: 33476982 PMCID: PMC7752030 DOI: 10.1016/j.intimp.2020.107307] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 01/25/2023]
Abstract
Severe forms of COVID-19 can evolve into pneumonia, featured by acute respiratory failure due to acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). In viral diseases, the replication of viruses is seemingly stimulated by an imbalance between pro-oxidant and antioxidant activity as well as by the deprivation of antioxidant mechanisms. In COVID-19 pneumonia, oxidative stress also appears to be highly detrimental to lung tissues. Although inhaling ozone (O3) gas has been shown to be toxic to the lungs, recent evidence suggests that its administration via appropriate routes and at small doses can paradoxically induce an adaptive reaction capable of decreasing the endogenous oxidative stress. Ozone therapy is recommended to counter the disruptive effects of severe COVID-19 on lung tissues, especially if administered in early stages of the disease, thereby preventing the progression to ARDS.
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Affiliation(s)
- Morteza Izadi
- Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Luca Cegolon
- Local Health Unit N. 2 “Marca Trevigiana”, Public Health Department, Treviso, Italy
| | - Mohammad Javanbakht
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran,Corresponding authors at: Nephrology and Urology Research Center Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Sarafzadeh
- Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran,Corresponding authors at: Nephrology and Urology Research Center Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hassan Abolghasemi
- Pediatric Congenital Hematologic Disorders Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Gholamhossein Alishiri
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Shi Zhao
- JC School of Public Health and Primary Care, Chinese University of Hong Kong, Hong Kong, China
| | - Behzad Einollahi
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mandana Kashaki
- Shahid Akbarabadi Clinical Research Development, Unit (ShACRDU), Iran University of Medical Sciences (IUMS), Tehran, Iran
| | | | - Mosa Asadi
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ramezan Jafari
- Department of Radiology, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Hassan Nikoueinejad
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mehrdad Ebrahimi
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Sina Imanizadeh
- Student Research Committee (SRC), Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Amir Hosein Ghazale
- Student Research Committee (SRC), Baqiyatallah University of Medical Sciences, Tehran, Iran
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Kamel M, Ahmed SM, Abdelzaher W. The potential protective effect of modafinil in intestinal ischemic reperfusion-induced in rats. Int Immunopharmacol 2020; 88:106983. [PMID: 33182022 DOI: 10.1016/j.intimp.2020.106983] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/22/2020] [Accepted: 09/04/2020] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Intestinal ischemia reperfusion (IR) is a pathophysiologic process that leads to oxidative stress and acute inflammatory responses. Understanding the mechanisms explaining this inflammation is essential to developing therapeutic strategies. Therefore, the purpose of this study was to evaluate the protective outcome of modafinil (Mod) against intestinal damages caused by intestinal IR injury. METHODS/MATERIALS Fourty adult Male Wistar rats were randomly divided into four groups: sham control group; intestinal IR group; Mod pre-treated IR group and Mod post-treated IR group. Mod in a dose of 10 mg/kg was injected intraperitoneally once daily for 7 days pre or post IR treatment. RESULTS Mod significantly attenuated the IR induced elevations in intestinal malondialdehyde (MDA), nitric oxide (NO), tumor necrosis factor alpha (TNF-α), interleukin 1-β (IL-1β) and P-glycoprotein (P-gp) levels, caspase-3 activity. However, a significant increase in TAC was reported as compared with the IR group but its post-treated IR group was highly protective. Mod post-treatment down-regulated the IR induced cyclo-oxygenase-2 (COX-2) over-expression. Distorted mucosa with loss of surface epithelial cells, epithelial separation oedematous lamina propria and inflammatory cellular infiltration detected by histopathological examination of intestinal tissue, were markedly ameliorated by Mod post-treatment. On the other hand, Mod pre-treatment showed less protection against intestinal IR in rats. CONCLUSION Current study suggests that Mod post-treatment ameliorated intestinal damages, so it can be considered a potential therapeutic agent to protect against the major clinical challenge of intestinal injury resulting from IR.
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Affiliation(s)
- MahaYehia Kamel
- Department of Pharmacology, Faculty of Medicine, Minia University, Egypt
| | - Sabreen Mahmoud Ahmed
- Depatment of Human Anatomy and Embryology, Faculty of Medicine, Minia University, Delegated to Deraya University-New Minia City, Egypt
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ADAR1 Alleviates Inflammation in a Murine Sepsis Model via the ADAR1-miR-30a-SOCS3 Axis. Mediators Inflamm 2020; 2020:9607535. [PMID: 32273831 PMCID: PMC7128072 DOI: 10.1155/2020/9607535] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/28/2020] [Accepted: 02/19/2020] [Indexed: 01/04/2023] Open
Abstract
Adenosine deaminase acting on double-stranded RNA 1 (ADAR1) mediates adenosine-to-inosine (A-to-I) RNA editing events. ADAR1 is highly expressed in “septic” macrophages and in small intestinal tissues of mice with sepsis. Overexpression of ADAR1 suppresses inflammation and intestinal damage. However, the specific underlying mechanism is unclear. This study was conducted to explore how microRNA (miRNA) regulates the anti-inflammatory mechanism of macrophages following ADAR1 upregulation. A murine sepsis model was established by cecal ligation and puncture (CLP). Mice were randomly assigned to sham, CLP, and CLP+ADAR1 groups. Hematoxylin and eosin (HE) staining and fluorescence isothiocyanate-dextran were used to evaluate intestinal injury and permeability. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR), western blotting, and Luminex assays were performed to detect changes in the expression of inflammatory cytokines. Adenoviruses were used to express ADAR1 in RAW 264.7 cells. Ribonucleoprotein immunoprecipitation analysis was conducted to detect the binding of ADAR1 and miRNAs. A dual-luciferase reporter assay was used to detect the binding of miRNAs and regulatory factors. We observed that ADAR1 significantly increased the expression of suppressor of cytokine signaling 3 (SOCS3) in macrophages and reduced the expression of interleukin-6 in macrophages and the serum, thereby reducing intestinal permeability and mucosal injury in mice with sepsis. The RNA-ribonucleoprotein immunoprecipitation binding assay and qRT-PCR demonstrated a direct interaction between ADAR1 and pri-miR-30a. The luciferase assay demonstrated that SOCS3 was significantly inhibited by miR-30a-5p, the mature product of miR-30a. Thus, ADAR1 exerts a protective effect against sepsis by reducing inflammation and organ damage via the ADAR1-miR-30a-SOCS3 axis.
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The effect of ellagic acid on caspase-3/bcl-2/Nrf-2/NF-kB/TNF-α /COX-2 gene expression product apoptosis pathway: a new approach for muscle damage therapy. Mol Biol Rep 2020; 47:2573-2582. [DOI: 10.1007/s11033-020-05340-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 01/14/2020] [Indexed: 02/06/2023]
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11
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Cai HA, Tao X, Zheng LJ, Huang L, Peng Y, Liao RY, Zhu YM. Ozone alleviates ischemia/reperfusion injury by inhibiting mitochondrion-mediated apoptosis pathway in SH-SY5Y cells. Cell Biol Int 2020; 44:975-984. [PMID: 31880362 DOI: 10.1002/cbin.11294] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 12/25/2019] [Indexed: 12/11/2022]
Abstract
Cerebral ischemia/reperfusion (I/R) injuries are common and often cause severe complications. Ozone has been applied for protecting I/R injury in animal models of several organs including cerebra, but the detailed mechanism remains unclear. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and lactate dehydrogenase measurement were used to determine the influence of ozone on cell activity and damage of SH-SY5Y cells. Some redox items such as catalase (CAT), malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) were measured by enzyme-linked immunosorbent assay. The mitochondrial membrane potential (ΔΨm ) was determined by JC-1 assay. Cytochrome-c (cyt-c) level in the cytoplasm and mitochondrion was measured by western blotting. Apoptosis was determined by flow cytometry, and some apoptosis-related molecules were detected by quantitative real-time polymerase chain reaction and western blotting. Ozone alleviated oxidative damage by increasing GSH-Px, SOD, CAT, and decreasing MDA. Ozone decreased mitochondrial damage caused by I/R injury and inhibited the release of cyt-c from mitochondrion to cytoplasm in SH-SY5Y cells. The cell apoptosis caused by I/R was inhibited by ozone, and ozone could decrease apoptosis by increasing the ratio of Bcl-2/Bax and inhibiting caspase signaling pathway in SH-SY5Y cells. Ozone has the ability of maintaining redox homeostasis, decreasing mitochondrion damage, and inhibiting neurocytes apoptosis induced by I/R. Therefore, ozone may be a promising protective strategy against cerebral I/R injury.
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Affiliation(s)
- Hua-An Cai
- Department of Rehabilitative Medicine, Laboratory of Sports Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Xi Tao
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Li-Jun Zheng
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Liang Huang
- Department of Rehabilitative Medicine, Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Yan Peng
- Hunan Provincial People's Hospital and The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, P.R. China
| | - Ruo-Yi Liao
- Department of Nursing, The First Hospital of Hunan University of Chinese Medicine, Changsha, 410007, P.R. China
| | - Yi-Min Zhu
- Hunan Provincial Key Laboratory of Emergency and Critical Care Metabonomics, Changsha, 410005, P.R. China
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Chen S, Li X, Wang Y, Mu P, Chen C, Huang P, Liu D. Ginsenoside Rb1 attenuates intestinal ischemia/reperfusion‑induced inflammation and oxidative stress via activation of the PI3K/Akt/Nrf2 signaling pathway. Mol Med Rep 2019; 19:3633-3641. [PMID: 30864725 PMCID: PMC6471656 DOI: 10.3892/mmr.2019.10018] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 02/12/2019] [Indexed: 12/13/2022] Open
Abstract
Ginsenoside Rb1 (GRb1), one of the major active saponins isolated from ginseng, has recently been reported to protect various organs against ischemia/reperfusion (IR) injury; however, the mechanisms underlying these protective effects following intestinal IR (IIR) remain unclear. The present study aimed to evaluate the effects of GRb1 on IIR injury and determine the mechanisms involved in these effects. Sprague Dawley rats were subjected to 75 min of superior mesenteric artery occlusion, followed by 3 h of reperfusion. GRb1 (15 mg/kg) was administered intraperitoneally 1 h prior to the induction of IIR, with or without intravenous administration of Wortmannin [WM; a phosphoinositide 3-kinase (PI3K) inhibitor, 0.6 mg/kg]. The degree of intestinal injury and oxidative stress-induced damage was determined by histopathologic evaluation and measurement of the serum activity levels of D-lactate, diamine oxidase and endotoxin, and the levels of malondialdehyde (MDA), superoxide dismutase (SOD) and 8-iso-prostaglandin F2α (8-iso-PGF2α). The protein expression levels of p85, phosphorylated (p)-p85, protein kinase B (Akt), p-Akt and nuclear factor erythroid 2-related factor 2 (Nrf2) were determined via western blotting, and the concentrations of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6 were measured via ELISA. It was revealed that IIR led to severe intestinal injury (as determined by significant increases in intestinal Chiu scores), which was accompanied with disruptions in the integrity of the intestinal mucosal barrier. IIR also increased the expression levels of TNF-α, IL-1β, IL-6, MDA and 8-iso-PGF2α in the intestine, and decreased those of SOD. GRb1 reduced intestinal histological injury, and suppressed inflammatory responses and oxidative stress. Additionally, the protective effects of GRb1 were eliminated by WM. These findings indicated that GRb1 may ameliorate IIR injury by activating the PI3K/protein kinase B/Nrf2 pathway.
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Affiliation(s)
- Sufang Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Xiang Li
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Panwei Mu
- Department of Endocrinology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Chaojin Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Pinjie Huang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Dezhao Liu
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
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Abstract
Ozone therapy has been gradually accepted by doctors in various fields because it has been safe, convenient, and inexpensive since the twentieth century. It has been used in the treatment of various diseases with satisfactory results, especially in the application of interventional surgery. For lumbar disc herniation, knee osteoarthritis, tissue ischemia-reperfusion after revascularization, stroke, and cancer, ozone therapy can improve the efficacy of interventional surgery and reduce postoperative acute and chronic complications. Prospects of ozone therapy in interventional therapy and the underlying mechanisms of efficacy need further exploration.
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Affiliation(s)
- Kenan Hao
- Interventional Diagnosis and Treatment Department, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Shuiying Tang
- Interventional Diagnosis and Treatment Department, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Huaning Xie
- Interventional Diagnosis and Treatment Department, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Xinmin Li
- Interventional Diagnosis and Treatment Department, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Xiaofeng He
- Interventional Diagnosis and Treatment Department, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
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Elsurer C, Onal M, Selimoglu N, Erdur O, Yilmaz M, Erdogan E, Kal O, Celik JB, Onal O. Postconditioning Ozone Alleviates Ischemia-Reperfusion Injury and Enhances Flap Endurance in Rats. J INVEST SURG 2018; 33:15-24. [PMID: 30339503 DOI: 10.1080/08941939.2018.1473901] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Introduction: Muscle-flap transferring is a routine approach utilized in reconstructive operations; however, flap morbidity is often a source of post-operative difficulty. Ischemia-Reperfusion Injury (IRI) is an important contributor to the viability of flaps after transferring. The goal of this research was for assess the probable useful impacts of ozone on flap survival in a rat muscle-flap design. Materials and Methods: We examined the effects of postconditioning ozone administration on viability of pedicled composite flaps. Twenty-eight Wistar rats were randomized into four groups: sham-operated (S), ischemia-reperfusion (IR), sham-operated + ozone (O), IR + ozone (IR + O), respectively. The animals were sacrificed on the eighth day. In a general histological evaluation, flap tissues were examined with a light microscope, and apoptotic cells were counted. The Apoptotic Index (AI) was then calculated. Flap-tissue samples were sent for analyses of malondialdehyde (MDA), catalase (CAT), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and protein carbonyl (PCO), and blood samples were sent for analyses of Total Oxidant Score (TOS), and Total Antioxidant Capacity (TAC). Data were evaluated statistically using the Kruskal-Wallis test. Results: The histomorphometric score was remarkably greater in O (p = .002). The AI was greater in IR (p = .002). The antioxidant parameters values as regards SOD, GSH-Px, CAT, and TAC were found to be greater in O (p < .005). The oxidant parameters values as regards MDA, PCO, TOS were found to be greater in IR (p < .005). Discussion: The current research indicates that ozone application can attenuate the muscle-flap injury brought about by IR through triggering the increase of the antioxidant capacity.
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Affiliation(s)
- Cagdas Elsurer
- Department of Otorhinolaryngology, Selcuk University Medical Faculty, Konya, Turkey
| | - Merih Onal
- Department of Otorhinolaryngology, Selcuk University Medical Faculty, Konya, Turkey
| | - Nebil Selimoglu
- Department of Hand Microsurgery, Konya Educational and Training Hospital, Konya, Turkey
| | - Omer Erdur
- Department of Otorhinolaryngology, Selcuk University Medical Faculty, Konya, Turkey
| | - Mustafa Yilmaz
- Department of Histology and Embryology, Selcuk University Medical Faculty, Konya, Turkey
| | - Ender Erdogan
- Department of Histology and Embryology, Selcuk University Medical Faculty, Konya, Turkey
| | - Oznur Kal
- Department of Nephrology, Baskent University Medical Faculty Konya Hospital, Konya, Turkey
| | - Jale Bengi Celik
- Department of Anesthesiology and Intensive Care, Selcuk University Medical Faculty, Konya, Turkey
| | - Ozkan Onal
- Department of Anesthesiology and Intensive Care, Selcuk University Medical Faculty, Konya, Turkey
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Tusat M, Mentese A, Demir S, Alver A, Imamoglu M. Medical ozone therapy reduces oxidative stress and testicular damage in an experimental model of testicular torsion in rats. Int Braz J Urol 2018; 43:1160-1166. [PMID: 28727368 PMCID: PMC5734081 DOI: 10.1590/s1677-5538.ibju.2016.0546] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/04/2017] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Testicular torsion (TT) refers to rotation of the testis and twisting of the spermatic cord. TT results in ischemia-reperfusion (I/R) injury involving increased oxidative stress, inflammation and apoptosis, and can even lead to infertility. The aim of this study was to investigate the effect of ozone therapy on testicular damage due to I/R injury in an experimental torsion model. MATERIALS AND METHODS 24 male Sprague-Dawley rats were divided into 3 groups; sham-operated, torsion/detorsion (T/D), and T/D+ozone. Ozone (1mg/kg) was injected intraperi-toneally 120 minutes before detorsion and for the following 24h. Blood and tissue samples were collected at the end of 24h. Johnsen score, ischemia modified albumin (IMA), total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) levels were determined. RESULTS Levels of IMA, TOS, OSI, and histopathological scores increased in the serum/tissue of the rats in the experimental T/D group. Serum IMA, TOS, and OSI levels and tissue histo-pathological scores were lower in the rats treated with ozone compared with the T/D group. CONCLUSION Our study results suggest that ozone therapy may exhibit beneficial effects on both biochemical and histopathological findings. Clinical trials are now necessary to confirm this.
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Affiliation(s)
- Mustafa Tusat
- Department of Pediatric Surgery, Kilis State Hospital, Kilis, Turkey
| | - Ahmet Mentese
- Program of Medical Laboratory Techniques, Vocational School of Health Sciences, Karadeniz Technical, University, Trabzon, Turkey
| | - Selim Demir
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Ahmet Alver
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey.,Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Mustafa Imamoglu
- Department of Pediatric Surgery, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Smith NL, Wilson AL, Gandhi J, Vatsia S, Khan SA. Ozone therapy: an overview of pharmacodynamics, current research, and clinical utility. Med Gas Res 2017; 7:212-219. [PMID: 29152215 PMCID: PMC5674660 DOI: 10.4103/2045-9912.215752] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The use of ozone (O3) gas as a therapy in alternative medicine has attracted skepticism due to its unstable molecular structure. However, copious volumes of research have provided evidence that O3's dynamic resonance structures facilitate physiological interactions useful in treating a myriad of pathologies. Specifically, O3 therapy induces moderate oxidative stress when interacting with lipids. This interaction increases endogenous production of antioxidants, local perfusion, and oxygen delivery, as well as enhances immune responses. We have conducted a comprehensive review of O3 therapy, investigating its contraindications, routes and concentrations of administration, mechanisms of action, disinfectant properties in various microorganisms, and its medicinal use in different pathologies. We explore the therapeutic value of O3 in pathologies of the cardiovascular system, gastrointestinal tract, genitourinary system, central nervous system, head and neck, musculoskeletal, subcutaneous tissue, and peripheral vascular disease. Despite compelling evidence, further studies are essential to mark it as a viable and quintessential treatment option in medicine.
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Affiliation(s)
| | - Anthony L Wilson
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Jason Gandhi
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA.,Medical Student Research Institute, St. George's University School of Medicine, Grenada, West Indies
| | - Sohrab Vatsia
- Department of Cardiothoracic Surgery, Lenox Hill Hospital, New York, NY, USA
| | - Sardar Ali Khan
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA.,Department of Urology, Stony Brook University School of Medicine, Stony Brook, NY, USA
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Lee H, Kim EK, Kim HY, Kim TI. Effects of Exposure to Ozone on the Ocular Surface in an Experimental Model of Allergic Conjunctivitis. PLoS One 2017; 12:e0169209. [PMID: 28046113 PMCID: PMC5207719 DOI: 10.1371/journal.pone.0169209] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 12/13/2016] [Indexed: 12/30/2022] Open
Abstract
Based on previous findings that ozone can induce an inflammatory response in the ocular surface of an animal model and in cultured human conjunctival epithelial cells, we investigated whether exposure to ozone exacerbates symptoms of allergic conjunctivitis. We evaluated the effects of exposure to ozone on conjunctival chemosis, conjunctival injection, corneal and conjunctival fluorescein staining scores, production of inflammatory cytokines in tears, and aqueous tear production in a mouse model of allergic conjunctivitis. To validate our in vivo results, we used interleukin (IL)-1α-pretreated conjunctival epithelial cells as an in vitro substitute for the mouse model. We evaluated whether exposure to ozone increased the inflammatory response and altered oxidative status and mitochondrial function in IL-1α-pretreated conjunctival epithelial cells. In the in vivo study, ozone induced increases in conjunctival chemosis, conjunctival injection, corneal and conjunctival fluorescein staining scores, and production of inflammatory cytokines, accompanied by a decrease in tear volume. In the in vitro study, exposure to ozone led to additional increases in IL-6 and tumor necrosis factor-α mRNA levels, which were already induced by treatment with IL-1α. Ozone did not induce any changes in cell viability. Pretreatment with IL-1α increased the expression of manganese superoxide dismutase, and exposure to ozone led to additional increments in the expression of this antioxidant enzyme. Ozone did not induce any changes in mitochondrial activity or expression of mitochondrial enzymes and proteins related to mitochondrial function, with the exception of phosphor-mammalian target of rapamycin. Treatment with butylated hydroxyanisole, a free radical scavenger, attenuated the ozone-induced increases in IL-6 expression in IL-1α-pretreated conjunctival epithelial cells. Therefore, we conclude that exposure to ozone exacerbates the detrimental effects on the integrity of the ocular surface caused by conjunctival allergic reactions, and further increases the inflammatory response in IL-1α-pretreated conjunctival epithelial cells.
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Affiliation(s)
- Hun Lee
- Department of Ophthalmology, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, South Korea
- Department of Ophthalmology, The Institute of Vision Research, Yonsei University College of Medicine, Seoul, South Korea
| | - Eung Kweon Kim
- Department of Ophthalmology, The Institute of Vision Research, Yonsei University College of Medicine, Seoul, South Korea
- Department of Ophthalmology, Corneal Dystrophy Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee Young Kim
- Department of Ophthalmology, The Institute of Vision Research, Yonsei University College of Medicine, Seoul, South Korea
- Department of Ophthalmology, Corneal Dystrophy Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Tae-im Kim
- Department of Ophthalmology, The Institute of Vision Research, Yonsei University College of Medicine, Seoul, South Korea
- Department of Ophthalmology, Corneal Dystrophy Research Institute, Yonsei University College of Medicine, Seoul, South Korea
- * E-mail:
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Lipoxin A4 Preconditioning Attenuates Intestinal Ischemia Reperfusion Injury through Keap1/Nrf2 Pathway in a Lipoxin A4 Receptor Independent Manner. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9303606. [PMID: 27375835 PMCID: PMC4914733 DOI: 10.1155/2016/9303606] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/24/2016] [Accepted: 04/04/2016] [Indexed: 02/07/2023]
Abstract
Oxidative stress plays a critical role in the pathogenesis of intestinal ischemia reperfusion (IIR) injury. Enhancement in endogenous Lipoxin A4 (LXA4), a potent antioxidant and mediator, is associated with attenuation of IIR. However, the effects of LXA4 on IIR injury and the potential mechanisms are unknown. In a rat IIR (ischemia 45 minutes and subsequent reperfusion 6 hours) model, IIR caused intestinal injury, evidenced by increased serum diamine oxidase, D-lactic acid, intestinal-type fatty acid-binding protein, and the oxidative stress marker 15-F2t-Isoprostane. LXA4 treatment significantly attenuated IIR injury by reducing mucosal 15-F2t-Isoprostane and elevating endogenous antioxidant superoxide dismutase activity, accompanied with Keap1/Nrf2 pathway activation. Meanwhile, LXA4 receptor antagonist Boc-2 reversed the protective effects of LXA4 on intestinal injury but failed to affect the oxidative stress and the related Nrf2 pathway. Furthermore, Nrf2 antagonist brusatol reversed the antioxidant effects conferred by LXA4 and led to exacerbation of intestinal epithelium cells oxidative stress and apoptosis, finally resulting in a decrease of survival rate of rat. Meanwhile, LXA4 pretreatment upregulated nuclear Nrf2 level and reduced hypoxia/reoxygenation-induced IEC-6 cell damage and Nrf2 siRNA reversed this protective effect of LXA4 in vitro. In conclusion, these findings suggest that LXA4 ameliorates IIR injury by activating Keap1/Nrf2 pathway in a LXA4 receptor independent manner.
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Kal A, Kal O, Akillioglu I, Celik E, Yilmaz M, Gonul S, Solmaz M, Onal O. The protective effect of prophylactic ozone administration against retinal ischemia-reperfusion injury. Cutan Ocul Toxicol 2016; 36:39-47. [PMID: 27028056 DOI: 10.3109/15569527.2016.1156120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Retinal ischemia-reperfusion (IR) injury is associated with many ocular diseases. Retinal IR injury leads to the death of retinal ganglion cells (RGCs), loss of retinal function and ultimately vision loss. The aim of this study was to show the protective effects of prophylactic ozone administration against retinal IR injury. MATERIALS AND METHODS A sham group (S) (n = 7) was administered physiological saline (PS) intraperitoneally (i.p.) for 7 d. An ischemia reperfusion (IR) group (n = 7) was subjected to retinal ischemia followed by reperfusion for 2 h. An ozone group (O) (n = 7) was administered 1 mg/kg of ozone i.p. for 7 d. In the ozone + IR (O + IR) group (n = 7), 1 mg/kg of ozone was administered i.p. for 7 d before the IR procedure and at 8 d, the IR injury was created (as in IR group). The rats were anesthetized after second hour of reperfusion and their intracardiac blood was drawn completely and they were sacrificed. Blood samples were sent to a laboratory for analysis of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA), total oxidant score (TOS) and total antioxidant capacity (TAC). The degree of retinal injury was evaluated according to changes in retinal cells and necrotic and apoptotic cells using the TUNEL method. Data were evaluated statistically with the Kruskal-Wallis test. RESULTS The number of RGCs and the inner retinal thickness were significantly decreased after ischemia, and treatment with ozone significantly inhibited retinal ischemic injury. In the IR group, the degree of retinal injury was found to be the highest. In the O + IR group, retinal injury was found to be decreased in comparison to the IR group. In the ozone group without retinal IR injury, the retinal injury score was the lowest. The differences in the antioxidant parameters SOD, GSH-Px and TAC were increased in the ozone group and the lowest in the IR group. The oxidant parameters MDA and TOS were found to be the highest in the IR group and decreased in the ozone group. DISCUSSION IR injury is also positively correlated with the degree of early apoptosis. This study demonstrated that ozone can attenuate subsequent ischemic damage in the rat retina through triggering the increase of the antioxidant capacity.
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Affiliation(s)
- Ali Kal
- a Department of Ophthalmology
| | | | - Ishak Akillioglu
- c Department of Pediatric Surgery , Baskent University, Medical Faculty , Konya , Turkey
| | | | | | | | | | - Ozkan Onal
- h Department of Anesthesiology and Reanimation , Medical Faculty, Selcuk University , Konya , Turkey
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