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Vitsos A, Ieronymaki D, Kostaki M, Almpani C, Barda C, Kikionis S, Sfiniadakis I, Dallas P, Rallis MC. In Vivo Evaluation of Wound Healing Efficacy of Gel-Based Dressings Loaded with Pycnogenol™ and Ceratothoa oestroides Extracts. Gels 2024; 10:233. [PMID: 38667652 PMCID: PMC11048808 DOI: 10.3390/gels10040233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Ceratothoa oestroides and French maritime pine bark (Pycnogenol™) extracts are considered promising therapeutic agents in wound healing. This study explores the healing efficacy of composite dressings containing these extracts, aiming to enhance their stability and effectiveness, utilizing a low-temperature vacuum method for producing Sodium Alginate-Maltodextrin gel dressings. Surgical wounds were inflicted on SKH-hr2 hairless mice. Dressings were loaded with Pycnogenol™ and/or C. oestroides extracts and assessed for their efficacy. Wound healing was primarily evaluated by clinical and histopathological evaluation and secondarily by Antera 3D camera and biophysical measurements. Dressings were stable and did not compromise the therapeutic properties of C. oestroides extract. All interventions were compared to the C. oestroides ointment as a reference product. Most of the wounds treated with the reference formulation and the C. oestrodes dressing had already closed by the 15th day, with histological scores of 7 and 6.5, respectively. In contrast, wounds treated with Pycnogenol™, either alone or in combination with C. oestroides, did not close by the end of the experiment (16th day), with histological scores reaching 15 in both cases. Furthermore, treatment with 5% Pycnogenol™ dressing appeared to induce skin thickening and increase body temperature. The study underscores the wound healing potential of C. oestroides extracts and highlights the need for further research to optimize Pycnogenol™ dosing in topical applications.
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Affiliation(s)
- Andreas Vitsos
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
| | - Dimitra Ieronymaki
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
| | - Maria Kostaki
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
| | - Chara Almpani
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
| | - Christina Barda
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece (S.K.)
| | - Stefanos Kikionis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece (S.K.)
| | | | - Paraskevas Dallas
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
| | - Michail Christou Rallis
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15784 Athens, Greece; (A.V.); (D.I.); (M.K.); (C.A.); (P.D.)
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Terezaki A, Kikionis S, Ioannou E, Sfiniadakis I, Tziveleka LA, Vitsos A, Roussis V, Rallis M. Ulvan/gelatin-based nanofibrous patches as a promising treatment for burn wounds. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103535] [Citation(s) in RCA: 2] [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: 12/26/2022]
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Zografos CG, Chrysikos D, Pittaras T, Karampelias V, Chairakakis A, Galanos A, Sfiniadakis I, Felekouras E, Zografos GC, Sideris M, Papadopoulou K, Papalois AE. The Effects of Ascorbic Acid and U-74389G on Renal Ischemia-Reperfusion Injury in a Rat Model. In Vivo 2021; 34:2475-2484. [PMID: 32871775 DOI: 10.21873/invivo.12063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM U-74389G and ascorbic acid protect the cells from oxidation. This study aimed to depict their role in ischemia-reperfusion injury in a renal rat model. MATERIALS AND METHODS Sixty Wistars rats were randomized into six groups of 10 animals each. Group A Ischemia 30 min, reperfusion 60 min; Group B Ischemia 30 min, reperfusion 120 min; Group C Ischemia 30 min, ascorbic acid administration, reperfusion 60 min; Group D Ischemia 30 min, ascorbic acid administration, reperfusion 120 min; Group E Ischemia 30 min, U-74389G administration, reperfusion 60 min; Group F Ischemia 30 min, U-74389G administration, reperfusion 120 min. We then collected tissue and blood samples. RESULTS Histology and the significantly decreased malondialdehyde and tumor necrosis factor-α levels indicated that ascorbic acid was superior to U-74389G, at pre-defined time intervals. CONCLUSION Ascorbic acid and U-74389G ameliorated renal damage induced by ischemia-reperfusion injury, suggesting a therapeutic effect.
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Affiliation(s)
- Constantinos G Zografos
- Experimental, Educational and Research Center ELPEN, Athens, Greece.,1 Department of Propaedeutic Surgery, Hippokration Hospital, Athens, Greece
| | - Dimosthenis Chrysikos
- Experimental, Educational and Research Center ELPEN, Athens, Greece.,1 Department of Propaedeutic Surgery, Hippokration Hospital, Athens, Greece
| | - Theodoros Pittaras
- Experimental, Educational and Research Center ELPEN, Athens, Greece.,Hematology Laboratory - Blood Bank, National and Kapodistrian University of Athens School of Medicine, Aretaieion Hospital, Athens, Greece
| | | | | | - Antonis Galanos
- Experimental, Educational and Research Center ELPEN, Athens, Greece
| | | | - Evangelos Felekouras
- First Department of Surgery, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - George C Zografos
- 1 Department of Propaedeutic Surgery, Hippokration Hospital, Athens, Greece
| | - Michail Sideris
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, U.K
| | | | - Apostolos E Papalois
- Experimental, Educational and Research Center ELPEN, Athens, Greece .,School of Medicine, European University Cyprus, Nicosia, Cyprus
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Karamani C, Antoniadou IT, Dimou A, Andreou E, Kostakis G, Sideri A, Vitsos A, Gkavanozi A, Sfiniadakis I, Skaltsa H, Papaioannou GT, Rallis MC, Maibach H. Optimization of psoriasis mouse models. J Pharmacol Toxicol Methods 2021; 108:107054. [PMID: 33775808 DOI: 10.1016/j.vascn.2021.107054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/17/2021] [Accepted: 03/21/2021] [Indexed: 01/22/2023]
Abstract
INTRODUCTION Psoriasis, is a common, chronic, autoimmune, inflammatory, relapsing disease, which would benefit from reliable and human-relevant animal models to test drugs pre-clinically and to understand their mechanism of action. Because of its ease of use, convenience and low cost, the imiquimod (IMQ)-induced psoriasis-like model is widely utilized; however, it is not known whether all mouse strains are equivalent and if the hairless mouse is appropriate, so that the imiquimod model can be further optimized. METHODS Under similar experimental conditions, common mouse strains (BALB/c, C57BL/6J, and ApoE) and a new hairless strain (ApoE/SKH-hr2) as well as several inducers (IMQ, IMQ + acetic acid (AcOH) topical and IMQ + AcOH systemic) were compared by clinical, histopathological, biophysical and locomotor activity assessments. RESULTS AND DISCUSSION The BALB/c mice yielded an optimal psoriasis-like phenotype with IMQ + AcOH topical treatment, and the corresponding phenotypes for the other mouse strains were C57BL/6J moderate and ApoE mild. In contrast, the ApoE/SKH-hr2 mice, as a result of the absence of a Munro abscess in the histopathology analysis, left doubt about the psoriasis-like acquisition. Locomotor activity of BALB/c mice treated with IMQ, IMQ + AcOH topically and IMQ + AcOH systemically showed decreased distance and rearing coverage and increased immobility with all treatments. Hence, the BALB/c mouse strain appears to be an optimal psoriasis-like model when utilizing IMQ + AcOH topical application.
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Affiliation(s)
- Christina Karamani
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Ivi Theodosia Antoniadou
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Aikaterini Dimou
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Evgenia Andreou
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Georgios Kostakis
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Asimina Sideri
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Andreas Vitsos
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Athena Gkavanozi
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | | | - Helen Skaltsa
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmacognosy and Chemistry of Natural Products, Panepistimiopolis, 15784 Athens, Greece
| | - Georgios Theodoros Papaioannou
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece
| | - Michail Christou Rallis
- National and Kapodistrian University of Athens, School of Health Sciences, Department of Pharmacy, Section of Pharmaceutical Technology, Panepistimiopolis, 15784 Athens, Greece.
| | - Howard Maibach
- Department of Dermatology, University of California, San Francisco, 2340 Sutter Street, San Francisco, CA 94115, USA
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Tsoukalas N, Giaginis C, Alexandrou P, Liontos M, Tolia M, Kiakou M, Sfiniadakis I, Kavantzas N, Patsouris E, Theocharis S. 1995P Clinical significance of cannabinoid receptor CB2 expression in non-small cell lung cancer (NSCLC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Sofrona E, Tziveleka LA, Harizani M, Koroli P, Sfiniadakis I, Roussis V, Rallis M, Ioannou E. In Vivo Evaluation of the Wound Healing Activity of Extracts and Bioactive Constituents of the Marine Isopod Ceratothoa oestroides. Mar Drugs 2020; 18:E219. [PMID: 32325719 PMCID: PMC7230750 DOI: 10.3390/md18040219] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/10/2020] [Accepted: 04/16/2020] [Indexed: 12/26/2022] Open
Abstract
Wound healing is a fundamental response to tissue injury and a number of natural products has been found to accelerate the healing process. Herein, we report the preparation of a series of different polarity (organic and aqueous) extracts of the marine isopod Ceratothoa oestroides and the in vivo evaluation of their wound healing activity after topical administration of ointments incorporating the various extracts on wounds inflicted on SKH-hr1 hairless mice. The most active extract was fractionated for enrichment in the bioactive constituents and the fractions were further evaluated for their wound healing activity, while their chemical profiles were analyzed. Wound healing was evaluated by clinical assessment, photo-documentation, histopathological analysis and measurement of biophysical skin parameters, such as transepidermal water loss (TEWL), hydration, elasticity, and skin thickness. The highest levels of activity were exerted by treatment of the wounds with a fraction rich in eicosapentaenoic acid (EPA), as well as myristic and palmitoleic acids. Topical application of the bioactive fraction on the wounds of mice resulted in complete wound closure with a skin of almost normal architecture without any inflammatory elements.
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Affiliation(s)
- Evgenia Sofrona
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece; (E.S.); (L.-A.T.); (M.H.); (V.R.)
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece;
| | - Leto-Aikaterini Tziveleka
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece; (E.S.); (L.-A.T.); (M.H.); (V.R.)
| | - Maria Harizani
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece; (E.S.); (L.-A.T.); (M.H.); (V.R.)
| | - Panagiota Koroli
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece;
| | | | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece; (E.S.); (L.-A.T.); (M.H.); (V.R.)
| | - Michail Rallis
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece;
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece; (E.S.); (L.-A.T.); (M.H.); (V.R.)
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Kotroni E, Simirioti E, Kikionis S, Sfiniadakis I, Siamidi A, Karalis V, Vitsos A, Vlachou M, Ioannou E, Roussis V, Rallis M. In Vivo Evaluation of the Anti-Inflammatory Activity of Electrospun Micro/Nanofibrous Patches Loaded with Pinus halepensis Bark Extract on Hairless Mice Skin. Materials (Basel) 2019; 12:E2596. [PMID: 31443178 PMCID: PMC6720688 DOI: 10.3390/ma12162596] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 12/20/2022]
Abstract
Skin inflammation is the most common symptom in dermatological diseases. It is usually treated by topically applied products, such as creams, gels and lotions. Skin dressings offer a promising alternative as they are endowed with more controlled administration conditions. In this study, the anti-inflammatory activity of electrospun alginate micro/nanofibrous dressings loaded with the aqueous extract of Pinus halepensis bark (PHBE) was evaluated in vivo in mice. The upper back skin of SKH-1 female hairless mice was exposed to a single dose of ultraviolet radiation (3 MEDs) and the inflamed area was treated daily by the direct application of a nanofibrous patch. The condition of the skin was evaluated primarily on the basis of clinical observation, photo-documentation and histopathological assessment, while measurements of the erythema, hydration, transepidermal water loss (TEWL) and sebum production were also taken into account. The results showed that the topical application of alginate micro/nanofibrous dressings loaded with PHBE on UV-inflamed skin significantly attenuated inflammation damage, reducing the healing period. Increase of the loading dose of PHBE resulted in a proportional reduction of the extent, the density and the depth of skin inflammation. With the steadily increasing interest of the skin dressing industry towards nanofibrous matrices, electrospun nonwovens could serve as ideal candidates for the development of multifunctional anti-inflammatory care systems.
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Affiliation(s)
- Eleftheria Kotroni
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Eleftheria Simirioti
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Stefanos Kikionis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece
| | | | - Aggeliki Siamidi
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Vangelis Karalis
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Andreas Vitsos
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Marilena Vlachou
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece.
| | - Michail Rallis
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15784, Greece.
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Dimaki A, Kyriazi M, Leonis G, Sfiniadakis I, Papaioannou GT, Ioannou E, Roussis V, Rallis M. Diabetic skin and UV light: Protection by antioxidants. Eur J Pharm Sci 2019; 127:1-8. [DOI: 10.1016/j.ejps.2018.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/20/2018] [Accepted: 10/10/2018] [Indexed: 10/28/2022]
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Tsoukalas N, Aravantinou E, Tsapakidis K, Giaginis C, Tolia M, Binas I, Baxevanos P, Galanopoulos M, Kiakou M, Kostakis I, Nikolaou C, Litos I, Liontos M, Tsiambas E, Gioulbasanis I, Sfiniadakis I, Karameris A, Kyrgias G, Theocharis S, Tsiatas M. Clinical significance of RCAS1 and CD3 expression in non-small cell lung cancers in immunotherapy era. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sfiniadakis I, Sfiniadaki E, Vasileiou-Dervisoglou D, Psarros F, Politi E. Detection of FHIT in Non-small Cell Lung Carcinomas: Correlation With Clinicopathologic Parameters. Chest 2016. [DOI: 10.1016/j.chest.2016.02.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Giaginis C, Alexandrou P, Tsoukalas N, Sfiniadakis I, Kavantzas N, Agapitos E, Patsouris E, Theocharis S. Hu-antigen receptor (HuR) and cyclooxygenase-2 (COX-2) expression in human non-small-cell lung carcinoma: associations with clinicopathological parameters, tumor proliferative capacity and patients' survival. Tumour Biol 2014; 36:315-27. [PMID: 25252849 DOI: 10.1007/s13277-014-2637-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 09/12/2014] [Indexed: 10/24/2022] Open
Abstract
Hu-antigen R (HuR) is considered to play a central role in tumor formation, growth, and metastasis by binding to messenger RNAs (mRNAs) encoding proteins such as cyclooxygenase-2 (COX-2) and inducing their expression via mRNA stabilization and/or altered translation. The present study aimed to evaluate the clinical significance of HuR and COX-2 protein expression in non-small-cell lung carcinoma (NSCLC). HuR and COX-2 expression was assessed immunohistochemically on tissue microarrays of 81 surgically resected NSCLC and was analyzed in relation with clinicopathological characteristics and patients' survival. Enhanced total HuR expression was significantly associated with tumor histological type and presence of lymph node metastases, as well as with increased tumor proliferative capacity and poor patients' outcome (p = 0.039, p = 0.017, p = 0.033, and p = 0.022, respectively). Enhanced COX-2 expression was significantly associated with the presence of lymphovascular invasion and increased tumor proliferative capacity (p = 0.031 and p = 0.023, respectively). Concomitant elevated HuR/COX-2 expression levels were significantly associated with tumor histological type and increased proliferative capacity (p = 0.002 and p = 0.045, respectively). Enhanced total HuR expression, as well as its cytoplasmic localization, was significantly associated with increased COX-2 expression (p = 0.015 and p = 0.001, respectively). The present study supported evidence that HuR may participate in malignant transformation of NSCLC, reinforcing its usefulness as potential therapeutic target in this type of neoplasia.
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Affiliation(s)
- Constantinos Giaginis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 M. Asias str, Goudi, Athens, 11527, Greece
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Tsoukalas N, Giaginis C, Alexandrou P, Tolia M, Bournakis E, Papakostidi A, Sfiniadakis I, Kavantzas N, Agapitos E, Patsouris E, Theocharis S. The Clinical and Pathological Significance of Cyclooxygenase-2 (Cox-2) and Human Antigen Receptor (Hur) Expression in Non Small Cell Lung Cancers. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu359.21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Tsoukalas N, Kostakis ID, Siakavellas S, Giaginis C, Bournakis E, Sfiniadakis I, Karameris A, Patsouris E, Theocharis S. The clinical and pathological significance of RCAS1 expression as a prognostic biomarker in non-small cell lung cancer. In Vivo 2014; 28:375-381. [PMID: 24815841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Lung cancer remains a major health problem due to its incidence and mortality. Receptor-binding cancer antigen expressed on SiSo cells (RCAS1) is a protein that can be expressed in cancer cells and is involved in tumor cell escape from immune system surveillance. AIM The aim of this study was to evaluate the clinical significance of immunohistochemical staining for RCAS1 in non-small cell lung cancer (NSCLC). MATERIALS AND METHODS Tissue microarrays of tumor specimens from 112 consecutive patients with newly diagnosed primary NSCLC were constructed. RCAS1 and Ki-67 immunohistochemistry were studied through computerized image analysis. Associations between RCAS1 and Ki-67 expression and clinico-pathological variables and survival were analyzed. RESULTS RCAS1 expression was higher in grade III tumors (p=0.009), regardless of the histological type, and in adenocarcinomas with lymphovascular invasion (p=0.014). A positive correlation between RCAS1 and Ki-67 levels was observed (p=0.002). Moreover, there was an inverse correlation of overall survival with RCAS1 (hazard ratio=0.99, p<0.001) and Ki-67 (hazard ratio=1.05, p=0.003) levels. Particularly, patients with higher expression of RCAS1 or Ki-67 had a significantly shorter survival than those with lower expression. CONCLUSION RCAS1 could be a useful immunohistochemical biomarker, indicating not only tumor aggressiveness but also a poorer prognosis for patients with NSCLC.
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Affiliation(s)
- Nikolaos Tsoukalas
- M.Sc., Medical Oncologist, Department of Medical Oncology, 401 General Military Hospital, Gennimata N. 10-12, Ampelokipi 11524, Athens, Greece. Mob.: +30 6977366056,
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Loukopoulos I, Sfiniadakis I, Pillai A, Konstantoulakis M, Androulakis G, Bonatsos V, Zografos G, Papalois A. Mycophenolate Mofetil and Sirolimus in Hepatocyte Transplantation in an Experimental Model of Toxic Acute Liver Failure. J INVEST SURG 2014; 27:205-13. [DOI: 10.3109/08941939.2013.879967] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Tsoukalas N, Kostakis I, Siakavellas S, Tolia M, Papakostidi A, Karameris A, Tzovaras A, Sfiniadakis I, Tsiambas E, Ardavanis A, Manolis E, Kittas C, Theocharis S. The value of RCAS1 as a potential biomarker in non-small cell lung cancers. J Clin Oncol 2012. [DOI: 10.1200/jco.2012.30.15_suppl.e21098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e21098 Background: RCAS1 (Receptor-binding Cancer Antigen expressed on SiSo cells) is a membrane protein that is expressed in different types of cancer. It halts the cell cycle and/or induces the apoptosis of the immune system cells within the tumour microenvironment. Hence, it is possible that this molecule is involved in the mechanism of the tumour cells’ escape from the immune system surveillance (immunoescape). Methods: Patients with primary non small cell lung cancer, initially eligible for surgical treatment, were included. The tissue samples (paraffin cubes) were processed using the Tissue Micro-arrays Method. Immunohistochemical study was done with specific monoclonal antibodies for RCAS1 and Ki-67. The image analysis was feasible due to a special program (image analysis software). In addition, a database was created that included the clinical and pathological characteristics of the patients. After the surgery patients received chemotherapy and/or radiotherapy according to the guidelines. Associations between variables were analyzed with non-parametric tests (Mann-Whitney and Kruskal-Wallis test) and the survival analysis with the Cox proportional hazards model. Two tailed p values ≤ 0.05 were considered to be statistically significant. Results: In total, 112 patients were examined (93 men and 19 women), mean age 63,6 years old. Almost 53% of the cases were adenocarcinoma, 33% squamous cell, 9% large cell, and 5% other types. Statistical significance was identified correlating RCAS1 over-expression to lower overall survival (p=0.032), to grade III (p=0.006) and in a positive correlation between RCAS1 and Ki-67 (p<0.001). Moreover, there is a trend of RCAS1 over-expression in advanced or metastatic stages and in tumours with lymphovascular invasion. In contrast, protein expression was not strongly associated to tumour size, to histological type, to patient age or to gender. Conclusions: The most important conclusions of this study are the negative correlation between RCAS1 and overall survival, the over-expression of RCAS1 in grade III tumors and the positive correlation between RCAS1 and Ki-67 which means that when Ki-67 increases RCAS1 is higher. Consequently, this molecule RCAS1 probably could be considered as a marker of the tumor’s aggressiveness.
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Affiliation(s)
- Nikolaos Tsoukalas
- Medical Oncology Department of 401 General Army Hospital and Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis Kostakis
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | - Spiros Siakavellas
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Tolia
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | | | | | - Alexandros Tzovaras
- First Medical Oncology Department of "Saint Savvas" Anticancer Hospital, Athens, Greece
| | | | | | - Alexandros Ardavanis
- First Medical Oncology Department of "Saint Savvas" Anticancer Hospital, Athens, Greece
| | - Evangelos Manolis
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | - Christos Kittas
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
| | - Stamatios Theocharis
- Medical School of National and Kapodistrian University of Athens, Athens, Greece
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Tsoukalas N, Oikonomaki T, Tolia M, Tzovaras A, Tsiambas E, Karameris A, Sfiniadakis I, Manolis E, Theocharis S, Kittas C. 9061 POSTER E-cadherin Expression in Lung Cancer and Its Clinical Importance. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72373-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Giaginis C, Daskalopoulou SS, Vgenopoulou S, Sfiniadakis I, Kouraklis G, Theocharis SE. Heat Shock Protein-27, -60 and -90 expression in gastric cancer: association with clinicopathological variables and patient survival. BMC Gastroenterol 2009; 9:14. [PMID: 19203381 PMCID: PMC2644705 DOI: 10.1186/1471-230x-9-14] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 02/09/2009] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Heat shock proteins (HSPs) are ubiquitous, highly conserved proteins across all the species and play essential roles in maintaining protein stability within the cells under normal conditions, while preventing stress-induced cellular damage. HSPs were also overexpressed in various types of cancer, being associated with tumor cell proliferation, differentiation and apoptosis. The aim of the present study was to evaluate the clinical significance of HSP -27, -60, and -90 expression in gastric carcinoma. METHODS HSP -27, -60, and -90 proteins expression was assessed immunohistochemically in tumoral samples of 66 gastric adenocarcinoma patients and was statistically analyzed in relation to various clinicopathological characteristics, tumor proliferative capacity and patients' survival. RESULTS HSP-27, -60, -90 proteins were abundantly expressed in gastric adenocarcinoma cases examined. HSP-27 expression was significantly associated with tumor size (pT, P = 0.026), the presence of organ metastases (pM, P = 0.046) and pStage (P = 0.041), while HSP-27 staining intensity with nodal status (pN, P = 0.042). HSP-60 expression was significantly associated with patients' sex (P = 0.011), while HSP-60 staining intensity with patients' age (P = 0.027) and tumor histopathological grade (P = 0.031). HSP-90 expression was not associated with any of the clinicopathological parameters examined; however, HSP-90 staining intensity was significantly associated with tumor size (pT, P = 0.020). High HSP-90 expression was significantly associated with longer overall survival times in univariate analysis (log-rank test, P = 0.033), being also identified as an independent prognostic factor in multivariate analysis (P = 0.026). CONCLUSION HSP-27, -60, and -90 were associated with certain clinicopathological parameters which are crucial for the management of gastric adenocarcinoma patient. HSP-90 expression may also be an independent prognostic indicator in gastric adenocarcinoma patients.
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Affiliation(s)
- Constantinos Giaginis
- Department of Forensic Medicine and Toxicology, Medical School, University of Athens, Athens, Greece.
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Tsiolis I, Papalois A, Loukopoulos I, Gravvanis A, Lykoudis E, Theodossopoulou E, Chairakakis A, Dimitroulopoulos D, Sfiniadakis I, Vassiliou I, Felekouras E, Dedeilias P, Kontogiorgi M, Papadimitriou L, Papadimitriou I. Experimental isolation and transplantation of hepatocytes with the use of antibody against interleukin-2 receptor (daclizumab) as immunosuppressive agent. Transplant Proc 2005; 37:1929-30. [PMID: 15919507 DOI: 10.1016/j.transproceed.2005.02.097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Daclizumab (Dmab) is a genetically engineered humanized IgG1 monoclonal antibody that binds to the alpha chain of the interleukin-2 receptor (Tac, CD25, p55) expressed on activated human T lymphocytes. Dmab has been used in a clinical protocol of islet transplantation with satisfactory results. The aim of the present study was to evaluate the use of an antibody against the interleukin-2 receptor (Dmab) as an immunosuppressive agent in an experimental model of hepatocyte allotransplantation (allo-Tx) in rats with fulminant hepatic failure (FHF). MATERIALS AND METHODS Six Wistar rats were used as donors and 48 Lewis rats as recipients: four groups of 12 animals each with induction of FHF and 24 hour later hepatocyte Tx--group A: no treatment; group B: cyclosporin (20 mg/kg days 0 to 5 and 10 mg/kg days 6 to 15); group C: Dmab (0.05 mg day of Tx and 0.05 mg day 7); and group D: Dmab and cyclosporine. Hepatocytes were transplanted intrasplenically. Animals were followed for 15 days. RESULTS Statistical analysis showed better survival among groups C (83%, MST = 13) and D (92%, MST = 14.25) compared to groups A (max 72, MST = 1.5) or B (50%, MST = 9). Survival in group D was better but not significantly than group C. Biochemical evaluation and histology confirmed satisfactory function and engraftment, respectively. CONCLUSION This experimental model showed the safe, effective use of Dmab.
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Affiliation(s)
- I Tsiolis
- Department of Surgery, E. Dynan Hospital, Athens, Greece
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Fotiadis C, Xekouki P, Papalois AE, Antonakis PT, Sfiniadakis I, Flogeras D, Karampela E, Zografos G. Effects of mycophenolate mofetil vs cyclosporine administration on graft survival and function after islet allotransplantation in diabetic rats. World J Gastroenterol 2005; 11:2733-8. [PMID: 15884112 PMCID: PMC4305906 DOI: 10.3748/wjg.v11.i18.2733] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM: To develop an experimental model of islet allotran-splantation in diabetic rats and to determine the positive or adverse effects of MMF as a single agent.
METHODS: Thirty-six male Wistar rats and 18 male Lewis rats were used as recipients and donors respectively. Diabetes was induced by the use of streptozotocin (60 mg/kg) intraperitoneally. Unpurified islets were isolated using the collagenase digestion technique and transplanted into the splenic parenchyma. The recipients were randomly assigned to one of the following three groups: group A (control group) had no immunosuppression; group B received cyclosporine (CsA) (5 mg/kg); group C received mycophenolate mofetil (MMF) (20 mg/kg). The animals were killed on the 12th d. Blood and grafted tissues were obtained for laboratory and histological assessment.
RESULTS: Median allograft survival was significantly higher in the two therapy groups than that in the controls (10 and 12 d for CsA and MMF respectively vs 0 d for the control group, P<0.01). No difference in allograft survival between the CsA and MMF groups was found. However, MMF had less renal and hepatic toxicity and allowed weight gain.
CONCLUSION: Monotherapy with MMF for immunosu-ppression was safe in an experimental model of islet allotransplantation and was equally effective with cyclosporine, with less toxicity.
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Affiliation(s)
- Constantin Fotiadis
- 3rd Department of Surgery, Athens University Medical School, 12 Diligiani str, 14561 Athens, Greece.
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Kontalexis S, Papalois A, Bibidakis E, Gravvanis A, Lykoudis E, Theodossopoulou E, Dimitroulopoulos D, Sfiniadakis I, Prachalias A, Felekouras E, Dedeilias P, Kontogiorgi M, Papadimitriou L, Papadimitriou I. Use of mycophenolate mofetil in the experimental allo-transplantation of hepatocytes in rats with fulminant hepatic failure. Transplant Proc 2004; 36:1739-40. [PMID: 15350466 DOI: 10.1016/j.transproceed.2004.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIM The aim of the study was to evaluate the beneficial effect of mycophenolate mofetil (MMF) as an immunosuppressive agent for experimental transplantation of hepatocytes in rats with fulminant hepatic failure (FHF). MATERIALS AND METHODS Six Wistar rats were used as donors and 40 Lewis rats at recipients, including four groups of 10 animals each. Group A received no treatment; Group B, cyclosporine (20 mg/kg days 0-5 and 10 mg/kg days 6-15); Group C, MMF (12 mg/kg per os every day); and Group D, MMF (23 mg/kg per os every day). Hepatocytes were transplanted intrasplenically. Animals were followed for 15 days. RESULTS The survival rates for Group A were maximum 72 h, whereas Groups B, C, and D showed 50%, 70%, and 80%, respectively. Biochemical evaluation and histology showed satisfactory function and engraftment, respectively. CONCLUSION The use of MMF in this experimental model yielded safe, satisfactory immunosuppression especially at the dose of 23 mg/kg.
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Affiliation(s)
- S Kontalexis
- Department of Surgery, E. Dynan Hospital, Athens, Greece
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Leventis I, Andreadou I, Papalois A, Sfiniadakis I, Gorgoulis VG, Korkolis DP, Hadjipavlou-Litina D, Kourounakis PN, Fotiadis C. A novel antioxidant non-steroidal anti-inflammatory agent protects rat liver against ischemia-reperfusion injury. In Vivo 2004; 18:161-9. [PMID: 15113043] [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: 04/29/2023]
Abstract
Liver ischemia followed by reperfusion is an important and common clinical event. A major mechanism is leukocyte adhesion to endothelium followed by release of reactive oxygen metabolites. The aim of this study was to determine the effects of a novel antioxidant ethylenediamine derivative with anti-inflammatory properties (compound IA) on an imitated clinical setting of acute hepatic ischemia-reperfusion injury. Eight groups of rats were subjected to a model of hepatic ischemia that was produced by occluding for 30 min the portal vein and hepatic artery. At the end of ischemia, compound IA was administered intravenously and the clamps were removed allowing reperfusion for 60 min or 24 h. The effect of compound IA was evaluated by histopathological examination, lipid peroxidation and plasma levels of liver enzymes. Administration of compound IA resulted in significantly less histological damage in liver tissue after 30-min ischemia followed by 60-min and 24-h reperfusion. Ischemia followed by 60 min of reperfusion increased lipid peroxidation compared to the sham-operated and the non-ischemic group. This increase was attenuated in the group treated with compound IA. Serum enzyme levels were significantly higher in the reperfusion groups compared to the non-ischemic groups and diminished after treatment. Compound IA exerted a protective effect on hepatic reperfusion injury in rats. Compound IA is believed to act by means of its potent antioxidant and anti-inflammatory activities.
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Affiliation(s)
- Ioannis Leventis
- 3rd Department of Surgery, Sotiria Hospital, University of Athens, School of Medicine, Greece
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Kyriazanos ID, Sfiniadakis I, Dimakos P, Gizaris V, Datsakis K, Dafnopoulou A. Impact of body mass index on fasting blood glucose concentration among Helicobater pylori carriers. Dig Dis 2003; 21:262-5. [PMID: 14571101 DOI: 10.1159/000073345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND/AIMS Despite the fact that Helicobacter pylori (Hp) is regarded as a major gastroduodenal pathogen, it has recently been suggested to be an important factor for non-gastroenterologic conditions such as diabetes mellitus. Accordingly, it seems that Hp infection may have implications in glycemic control and in fasting plasma glucose concentrations. As overnutrition and obesity are directly related to impaired glucose tolerance, the aim of the present study was to determine whether Hp infection leads to alterations in fasting plasma glucose concentrations of Hp carriers and especially in relation to their body mass index. METHODS Serum was obtained from 224 young, male navy recruits. An enzyme-linked immunosorbent assay to detect Hp-specific IgG serum antibodies as well as gastroscopy along with biopsy was used to identify the infected individuals. Serum levels of glucose, urea, creatinine and uric acid were also determined. Non-fasting subjects and persons with abnormal oral glucose tolerance curve test were excluded. RESULTS Among Hp-positive individuals, obese persons presented with a significantly lower mean blood glucose level than non-obese persons. Obese Hp-contaminated participants had significantly lower mean fasting blood glucose concentrations as well as a significantly smaller percentage of participants with abnormal elevated blood glucose levels than obese participants negative to Hp infection. CONCLUSIONS Our data suggest that obesity in combination with Hp infection may induce an enhanced response to insulin leading to reduced fasting blood glucose levels, among Hp-positive obese persons in comparison to Hp-positive lean persons.
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Kyriazanos ID, Sfiniadakis I, Gizaris V, Hountis P, Hatziveis K, Dafnopoulou A, Datsakis K. The incidence of Helicobacter pylori infection is not increased among obese young individuals in Greece. J Clin Gastroenterol 2002; 34:541-6. [PMID: 11960066 DOI: 10.1097/00004836-200205000-00012] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
GOALS To identify possible risk factors affecting the acquisition of Helicobacter pylori (Hp) infection and to investigate whether the incidence of infection is higher among obese and overweight verus normal-weight young adults in Greece. STUDY Serum was obtained from 224 young male Navy recruits (mean age, 22.84 years) during their induction into the Hellenic Navy. An enzyme-linked immunosorbent assay to detect Hp-specific IgG serum antibodies, as well as gastroscopy with biopsy, were used to identify the infected individuals. A structured questionnaire was filled out for each subject regarding environmental conditions, socioeconomic conditions, dietary habits, and data related to their personal and family health history. RESULTS H. pylori positivity rate was 27.23%. Univariate analysis recognized that the number of siblings in the same bedroom was significantly higher among Hp-positive than Hp-negative individuals. Logistic regression analysis showed that sharing the same bedroom with more than one sibling during childhood and consumption of fast food are independent predictors of Hp acquisition. The presence of obesity (body mass index > or =25 kg/m2) remained unrelated to the Hp status of the individuals. CONCLUSIONS These data suggest that the risk of Hp infection does not increase in overweight young persons. Sharing the same bedroom with more than one sibling during childhood is an important determinant in acquiring Hp infection. Increased fast food consumption could be an important source of the infection outside of the home.
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