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Magalhães TR, Corbee RJ, Queiroga FL, Lourenço AL. Dietary omega-3 fatty acids in the management of feline periodontal disease: What is the evidence? J Anim Physiol Anim Nutr (Berl) 2023; 107:1465-1472. [PMID: 37403250 DOI: 10.1111/jpn.13855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 04/20/2023] [Accepted: 06/16/2023] [Indexed: 07/06/2023]
Abstract
Periodontal disease is an oral disorder with high prevalence in cats from 2 years of age, resulting from an inflammatory response against bacterial plaque. Treatment depends on the stage of the disease and may include dental scaling, local application of perioceutics, tissue regeneration and/or even tooth extraction and periodontal surgery. As multimodal therapy is often required, new strategies have been developed to improve the therapeutic response in these patients. Adjuvant use of omega-3 fatty acids has been reported in humans with periodontal disease, but the current evidence of its effect in companion animals, especially cats, is still considered to be scarce and conflicting. This review describes the state of the art regarding feline periodontal disease and seeks to clarify the potential effect of omega-3 fatty acids on its clinical management in light of the evidence available in the current literature.
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Affiliation(s)
- Tomás R Magalhães
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Ronald J Corbee
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Felisbina L Queiroga
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Centre for the Study of Animal Science, CECA-ICETA, University of Porto, Porto, Portugal
| | - Ana L Lourenço
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Department of Animal Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
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Zumbo G, Corridore D, Sciscione S, Stamegna C, Guerra F, Polimeni A, Vozza I. Oil Pulling and Polyphenols: Treatment of Gingivitis Patients with 'Itri Extra-Virgin Olive Oil'. J Clin Med 2023; 12:5256. [PMID: 37629298 PMCID: PMC10455081 DOI: 10.3390/jcm12165256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
OBJECTIVES The aim of the study was to evaluate the effectiveness of extra virgin olive (EVO) oil and fruity oil for the treatment of gingivitis. MATERIALS AND METHODS A sample of 75 patients over 18 years of age with gingivitis induced by plaque bacteria was divided into three groups: study group A, with extra virgin olive oil; study group B, with fruity oil; and control group C. In the two study groups, EVO oil was administered as a mouthwash to patients with gingival inflammation. The protocol included a daily application of the product for 30 days, with three recalls 15 days apart. Clinical parameters of plaque formation and gingivitis, including plaque index (PI) and bleeding index (BI), were assessed at each recall and scored on a specific periodontal chart. The control group received no mouthwash treatment in addition to normal daily oral hygiene procedures, and the same clinical parameters as the study group were evaluated. Data were evaluated using SPSS 27.0 software for Windows (SPSS Inc., Chicago, IL, USA). Then, the pre- and post-treatment values of the groups were compared using Student's t-test, setting p < 0.05 as the significance level. RESULTS Comparison of the three groups showed that extra-virgin olive oil was an adjuvant in the treatment of gingival inflammation, improving PI and BI. In group A, the mean plaque index showed a 48% reduction, and the bleeding index showed a 64% reduction after 30 days. In group B, the mean plaque index showed a 35% reduction and a bleeding index reduction of 43% after 30 days. CONCLUSIONS The collected data showed significant improvements in the formation of bacterial plaque and gingivitis. The exact mechanism of such treatment is still to be elucidated. As a result of this, further studies with a different sample of patients than those used and a comparison with other products need to be addressed to verify and demonstrate the antibacterial and anti-inflammatory effects of the components of this natural product.
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Affiliation(s)
- Giulia Zumbo
- Department of Oral and Maxillo-Facial Sciences, Sapienza University of Rome, 00161 Rome, Italy; (D.C.); (S.S.); (C.S.); (F.G.); (A.P.); (I.V.)
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Mazumdar R, Dutta PP, Saikia J, Borah JC, Thakur D. Streptomyces sp. Strain PBR11, a Forest-Derived Soil Actinomycetia with Antimicrobial Potential. Microbiol Spectr 2023; 11:e0348922. [PMID: 36719230 PMCID: PMC10101066 DOI: 10.1128/spectrum.03489-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 12/21/2022] [Indexed: 02/01/2023] Open
Abstract
The Actinomycetia isolate PBR11 was isolated from the forest rhizosphere soil of Pobitora Wildlife Sanctuary (PWS), Assam, India. The isolate was identified as Streptomyces sp. with 92.91% sequence similarity to their closest type strain, Streptomyces atrovirens NRRL B-16357 DQ026672. The strain demonstrated significant antimicrobial activity against 19 test pathogens, including multidrug-resistant (MDR) clinical isolates and dermatophytes. Phenol, 2,5-bis(1,1-dimethylethyl), is the major chemical compound detected by gas chromatography-mass spectrometry in the ethyl acetate extract of PBR11 (EtAc-PBR11). The presence of the PKS type II gene (type II polyketide synthases) and chitinase gene suggested that it has been involved in the production of antimicrobial compounds. Metabolic profiling of the EtAc-PBR11 was performed by thin-layer chromatography and flash chromatography resulted in the extraction of two bioactive fractions, namely, PBR11Fr-1 and PBR11Fr-2. Liquid chromatography-tandem mass spectrometry analysis of both the fractions demonstrated the presence of significant antimicrobial compounds, including ethambutol. This is the first report on the detection of antituberculosis drug in the bioactive fractions of Streptomyces sp. PBR11. EtAc-PBR11 and PBR11Fr-1 showed the lowest MIC values (>0.097 and >0.048 μg/mL, respectively) against Candida albicans MTCC 227, whereas they showed the highest MIC values (>0.390 and >0.195 μg/mL, respectively) against Escherichia coli ATCC BAA-2469. The effects of PBR11Fr-1 were investigated on the pathogens by using a scanning electron microscope. The results indicated major morphological alterations in the cytoplasmic membrane. PBR11Fr-1 exhibited low cytotoxicity on normal hepatocyte cell line (CC-1) and the percent cell viability started to decline as the concentration increased from 50 μg/mL (87.07% ± 3.22%) to 100 μg/mL (81.26% ± 2.99%). IMPORTANCE Novel antibiotic breakthroughs are urgently required to combat antimicrobial resistance. Actinomycetia are the principal producers of antibiotics. The present study demonstrated the broad-spectrum antimicrobial potential of an Actinomycetia strain Streptomyces sp. strain PBR11 isolated from the PWS of Assam, India, which represents diverse, poorly screened habitats for novel microorganisms. The strain displayed 92.4% sequence similarity with genes of the closest type strain, indicating that the strain may represent a novel taxon within the phylum Actinomycetota. The metabolomics studies of EtAc-PBR11 revealed structurally diverse antimicrobial agents, including the detection of the antituberculosis drug ethambutol, in the bioactive fraction of Streptomyces sp. PBR11 for the first time. The PBR11 strain also yielded positive results for the antibiotic synthesis gene and the chitinase gene, both of which are responsible for broad-spectrum antimicrobial activity. This suggests that the untouched forest ecosystems have a tremendous potential to harbor potent actinomycetia for future drug discovery.
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Affiliation(s)
- Rajkumari Mazumdar
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
- Department of Molecular Biology and Biotechnology, Cotton University, Guwahati, India
| | | | - Juri Saikia
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
- Department of Biotechnology, Gauhati University, Guwahati, India
| | - Jagat Chandra Borah
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
| | - Debajit Thakur
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati, India
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Braťka P, Fenclová T, Hlinková J, Uherková L, Šebová E, Hefka Blahnová V, Hedvičáková V, Žižková R, Litvinec A, Trč T, Rosina J, Filová E. The Preparation and Biological Testing of Novel Wound Dressings with an Encapsulated Antibacterial and Antioxidant Substance. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3824. [PMID: 36364600 PMCID: PMC9656126 DOI: 10.3390/nano12213824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Chronic wounds represent a significant socio-economic problem, and the improvement of their healing is therefore an essential issue. This paper describes the preparation and biological properties of a novel functionalized nanofiber wound dressing consisting of a polycaprolactone nanofiber carrier modified by a drug delivery system, based on the lipid particles formed by 1-tetradecanol and encapsulated gentamicin and tocopherol acetate. The cytotoxicity of extracts was tested using a metabolic activity assay, and the antibacterial properties of the extracts were tested in vitro on the bacterial strains Staphylococcus aureus and Pseudomonas aeruginosa. The effect of the wound dressing on chronic wound healing was subsequently tested using a mouse model. Fourteen days after surgery, the groups treated by the examined wound cover showed a lower granulation, reepithelization, and inflammation score compared to both the uninfected groups, a lower dermis organization compared to the control, a higher scar thickness compared to the other groups, and a higher thickness of hypodermis and bacteria score compared to both the uninfected groups. This work demonstrates the basic parameters of the safety (biocompatibility) and performance (effect on healing) of the dressing as a medical device and indicates the feasibility of the concept of its preparation in outpatient conditions using a suitable functionalization device.
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Affiliation(s)
- Petr Braťka
- Faculty of Biomedical Engineering, Czech Technical University, Náměstí Sítná 3105, 27201 Kladno, Czech Republic
- Grade Medical s.r.o., Náměstí Sítná 3105, 27201 Kladno, Czech Republic
| | - Taťána Fenclová
- Grade Medical s.r.o., Náměstí Sítná 3105, 27201 Kladno, Czech Republic
| | - Jana Hlinková
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Lenka Uherková
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Eva Šebová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Veronika Hefka Blahnová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Věra Hedvičáková
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Radmila Žižková
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Andrej Litvinec
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Tomáš Trč
- Grade Medical s.r.o., Náměstí Sítná 3105, 27201 Kladno, Czech Republic
| | - Jozef Rosina
- Faculty of Biomedical Engineering, Czech Technical University, Náměstí Sítná 3105, 27201 Kladno, Czech Republic
| | - Eva Filová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
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Bousnaki M, Beketova A, Kontonasaki E. A Review of In Vivo and Clinical Studies Applying Scaffolds and Cell Sheet Technology for Periodontal Ligament Regeneration. Biomolecules 2022; 12:435. [PMID: 35327627 PMCID: PMC8945901 DOI: 10.3390/biom12030435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 12/14/2022] Open
Abstract
Different approaches to develop engineered scaffolds for periodontal tissues regeneration have been proposed. In this review, innovations in stem cell technology and scaffolds engineering focused primarily on Periodontal Ligament (PDL) regeneration are discussed and analyzed based on results from pre-clinical in vivo studies and clinical trials. Most of those developments include the use of polymeric materials with different patterning and surface nanotopography and printing of complex and sophisticated multiphasic composite scaffolds with different compartments to accomodate for the different periodontal tissues' architecture. Despite the increased effort in producing these scaffolds and their undoubtable efficiency to guide and support tissue regeneration, appropriate source of cells is also needed to provide new tissue formation and various biological and mechanochemical cues from the Extraccellular Matrix (ECM) to provide biophysical stimuli for cell growth and differentiation. Cell sheet engineering is a novel promising technique that allows obtaining cells in a sheet format while preserving ECM components. The right combination of those factors has not been discovered yet and efforts are still needed to ameliorate regenerative outcomes towards the functional organisation of the developed tissues.
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Affiliation(s)
| | | | - Eleana Kontonasaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece; (M.B.); (A.B.)
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Lopes Kubitza FM, Anthony JMG. Topical oral 1-tetradecanol complex in the treatment of periodontal diseases in cats. J Feline Med Surg 2019; 21:1141-1148. [PMID: 30652935 PMCID: PMC10814267 DOI: 10.1177/1098612x18820734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
OBJECTIVES The aim of this study was to evaluate the outcomes of the treatment of chronic periodontal disease with an oral application of tetradecanol complex (1-TDC) in cats. METHODS The test group (n = 9) received 1-TDC (525 mg per gel capsule/day) and the placebo group (n = 4) received olive oil (0.25 ml per gel capsule/day) for 6 weeks. RESULTS Oral treatment with 1-TDC resulted in significant reductions in all parameters of clinical periodontal disease except tooth mobility at 6 weeks. The 1-TDC group exhibited a statistically significant reduction in pocket depth, clinical attachment loss, gingival index and bleeding on probing after treatment at 6 weeks, whereas the placebo group did not show any significant change. CONCLUSIONS AND RELEVANCE Chronic inflammation associated with periodontal diseases leads to periodontal tissue destruction. As a result, modulation of the host response has been included in the treatment protocol for periodontal diseases. Fatty acids present anti-inflammatory properties and are being investigated for use in the treatment and prevention of progressive periodontal diseases.
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Topical Host-Modulating Therapy for Periodontal Regeneration: A Systematic Review and Meta-Analysis. TISSUE ENGINEERING PART B-REVIEWS 2019; 25:526-543. [DOI: 10.1089/ten.teb.2019.0184] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Yun JW, Kim SH, Kim YS, Choi EJ, You JR, Cho EY, Yoon JH, Kwon E, Kim HC, Jang JJ, Park JS, Che JH, Kang BC. Preclinical study of safety of Dendropanax morbifera Leveille leaf extract: General and genetic toxicology. JOURNAL OF ETHNOPHARMACOLOGY 2019; 238:111874. [PMID: 30986520 DOI: 10.1016/j.jep.2019.111874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Dendropanax morbifera Leveille (DM) has been used in traditional medicines for infectious and skin diseases, and dysmenorrhea. It exhibits a diverse therapeutic potential including anti-cancer, anti-thrombotic, anti-diabetic, anti-oxidant, and anti-inflammatory activities. AIM OF THE STUDY Despite promising health benefits of DM, knowledge of its potential adverse effects is very limited. The current study focused on the investigation of subchronic toxicity and genotoxicity of extract obtained from DM according to the test guidelines published by the Organization for Economic Cooperation and Development. MATERIALS AND METHODS We conducted a toxicological evaluation of DM extracts using 14-day repeated-dose toxicity study and 13-week repeated-dose toxicity study in Sprague-Dawley rats administered orally at doses of 500, 1000, or 2000 mg/kg/day. The clastogenicity of DM extract was also evaluated by in vitro chromosome aberration assay and in vivo micronucleus assay. RESULTS Assessment of subchronic toxicity of DM extract by oral administration in rats revealed unremarkable treatment-related findings with respect to food/water consumption, body weight, mortality, urinalysis, hematology, serum biochemistry, necropsy, organ weight and histopathology at doses of 500, 1000, and 2000 mg/kg. Accordingly, the level of no-observed-adverse-effect for DM extract in 13-week subchronic toxicity study was considered to be 2000 mg/kg/day in rats. The data observed from in vitro chromosome aberration assay and in vivo micronucleus assay exclude any clastogenicity of DM extract. CONCLUSION The results suggest that the oral consumption of DM extract has no adverse effects in humans and represents a safe traditional medicine.
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Affiliation(s)
- Jun-Won Yun
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Seung-Hyun Kim
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yun-Soon Kim
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Eun Jin Choi
- Jeonnam Bioindustry Foundation, Jeonnam Institute of Natural Resources Research (JINR), Jangheung-gun, Jeollanam-do, Republic of Korea
| | - Ji-Ran You
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Eun-Young Cho
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jung-Hee Yoon
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Euna Kwon
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyoung-Chin Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju, Republic of Korea
| | - Ja-June Jang
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jin-Sung Park
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jeong-Hwan Che
- Biomedical Center for Animal Resource and Development, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Byeong-Cheol Kang
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea; Biomedical Center for Animal Resource and Development, Seoul National University College of Medicine, Seoul, Republic of Korea; Graduate School of Translational Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Designed Animal and Transplantation Research Institute, Institute of GreenBio Science Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Republic of Korea.
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Park JU, Kang BY, Kim YR. Ethyl Acetate Fraction from Dendropanax morbifera Leaves Increases T Cell Growth by Upregulating NF-AT-Mediated IL-2 Secretion. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2018; 46:453-467. [DOI: 10.1142/s0192415x18500234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Dendropanax morbifera Leveille (Araliaceae) is an endemic species that grows in Southwestern Korea and has been used as a folk medicine. Several studies reported that D. morbifera leaves have diverse therapeutic potentials. We found that the water extract of D. morbifera leaves increased the growth of EL-4 T cells. The water extract was divided into five fractions: [Formula: see text]-hexane, chloroform, ethyl acetate, [Formula: see text]-butanol, and water layers. The ethyl acetate (W-EA) fraction showed a more significant effect than the other fractions on the growth of EL-4 T cells, splenocytes, and isolated murine CD4[Formula: see text] T cells. We evaluated the W-EA fraction for its immunomodulatory effects focusing on T cell functions. First, we tested the effect of the W-EA fraction on the regulation of interleukin-2 (IL-2), a potent T cell growth factor. The W-EA fraction significantly increased IL-2 secretion in EL-4 T cells activated with phorbol 12-myristate 13-acetate (PMA) and ionomycin (Io). In addition, the W-EA fraction increased interferon-gamma (IFN-[Formula: see text] production in isolated murine splenocytes activated with Concanavalin A (ConA). Next, we examined the effect of the W-EA fraction on the regulation of transcriptional factors related to IL-2 production in T cells. The W-EA fraction significantly increased PMA/Io-induced promoter activity of a nuclear factor of activated T cells (NF-AT) in EL-4 T cells, but did not show any significant effects on the promoters of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-[Formula: see text]B). These results indicate that the W-EA fraction from water extract of D. morbifera leaves enhances IL-2 production at the transcriptional levels via the up-regulation of NF-AT in PMA/Io-activated EL-4 T cells.
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Affiliation(s)
- Jung Up Park
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Bok Yun Kang
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Young Ran Kim
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
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Fawzy El-Sayed KM, Dörfer CE. Animal Models for Periodontal Tissue Engineering: A Knowledge-Generating Process. Tissue Eng Part C Methods 2017; 23:900-925. [DOI: 10.1089/ten.tec.2017.0130] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Karim M. Fawzy El-Sayed
- Department of Oral Medicine and Periodontology, Faculty of Oral and Dental Medicine, Cairo University, Giza, Egypt
- Clinic for Conservative Dentistry and Periodontology, School of Dental Medicine, Christian Albrechts University, Kiel, Germany
| | - Christof E. Dörfer
- Clinic for Conservative Dentistry and Periodontology, School of Dental Medicine, Christian Albrechts University, Kiel, Germany
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Donos N, Park JC, Vajgel A, de Carvalho Farias B, Dereka X. Description of the periodontal pocket in preclinical models: limitations and considerations. Periodontol 2000 2017; 76:16-34. [DOI: 10.1111/prd.12155] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2016] [Indexed: 12/13/2022]
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Scott KI, Harvey CE, Anthony JG, Pool R. Odontogenic Fibromyxoma in a Cat: First Confirmed Case in This Species. J Vet Dent 2017; 34:18-29. [PMID: 28513313 DOI: 10.1177/0898756417706281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An inflammatory gingival mass surrounding resorbing teeth was diagnosed via biopsy in a 9-year-old domestic shorthair cat. A dorsal rim excision was performed to remove the entire mass with associated teeth and bone. Histopathological diagnosis of the en bloc tissue revealed an odontogenic fibromyxoma. Extensive literature review revealed few case reports of companion animals with this neoplasm, and none in a feline patient. This report documents the clinical presentation, diagnostic differentials, surgical therapy, and long-term follow-up of an odontogenic fibromyxoma in a cat.
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Affiliation(s)
- Kristin I Scott
- 1 Hospital for Veterinary Dentistry and Oral Surgery, Matthews, NC, USA
| | - Colin E Harvey
- 2 University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, USA
| | - James G Anthony
- 3 Pacific Dental Service for Animals, Princeton, British Columbia, Canada
| | - Roy Pool
- 4 Department of Veterinary Pathobiology, Veterinary Medicine and Biomedical Sciences, Texas A & M University, College Station, TX, USA
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BALCI YUCE H. Periodontoloji Alaninda Hayvan Çalışmaları: Deneysel Periodontal ve Periimplant Hastalığın İndüksiyonu. CUMHURIYET DENTAL JOURNAL 2017. [DOI: 10.7126/cumudj.307312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Tetradecanol reduces EL-4 T cell growth by the down regulation of NF-κB mediated IL-2 secretion. Eur J Pharmacol 2017; 799:135-142. [PMID: 28167257 DOI: 10.1016/j.ejphar.2017.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/05/2017] [Accepted: 02/02/2017] [Indexed: 12/11/2022]
Abstract
Tetradecanol is a straight-chain saturated fatty alcohol purified from Dendropanax morbifera leaves. We found that tetradecanol (30μM) reduced specifically the growth of T cells such as EL-4 T cell and isolated murine CD4+ T cells. In this study, we investigated the effects of tetradecanol on the regulation of interlukin-2 (IL-2), a potent T cell growth factor. Tetradecanol significantly inhibited IL-2 secretion in EL-4 T cells activated with phorbol 12-myristate 13-acetate (PMA) plus ionomycin (Io) and also in isolated murine CD4+ T cells activated with anti-CD3 and anti-CD28 antibodies. Next, we examined the effect of tetradecanol on the transcriptional activity related to IL-2 production in T cells. Tetradecanol decreased PMA/Io-induced promoter activity of NF-κB in EL-4 T cells, but did not show any significant effects on the promoters of activator protein 1 (AP-1) and nuclear factor of activated T cells (NF-AT). Tetradecanol inhibited IκBα degradation and nuclear translocation of NF-κB subunit, p65 in PMA/Io-activated EL-4 T cells. These results suggest that tetradecanol might have immunosuppressive effects on T cell mediated disorders. Using a chronic allergic contact dermatitis model induced by repeated application of oxazolone, we showed that tetradecanol reduced ear thickness induced by oxazolone.
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Kantarci A, Hasturk H, Van Dyke TE. Animal models for periodontal regeneration and peri-implant responses. Periodontol 2000 2017; 68:66-82. [PMID: 25867980 DOI: 10.1111/prd.12052] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 11/28/2022]
Abstract
Translation of experimental data to the clinical setting requires the safety and efficacy of such data to be confirmed in animal systems before application in humans. In dental research, the animal species used is dependent largely on the research question or on the disease model. Periodontal disease and, by analogy, peri-implant disease, are complex infections that result in a tissue-degrading inflammatory response. It is impossible to explore the complex pathogenesis of periodontitis or peri-implantitis using only reductionist in-vitro methods. Both the disease process and healing of the periodontal and peri-implant tissues can be studied in animals. Regeneration (after periodontal surgery), in response to various biologic materials with potential for tissue engineering, is a continuous process involving various types of tissue, including epithelia, connective tissues and alveolar bone. The same principles apply to peri-implant healing. Given the complexity of the biology, animal models are necessary and serve as the standard for successful translation of regenerative materials and dental implants to the clinical setting. Smaller species of animal are more convenient for disease-associated research, whereas larger animals are more appropriate for studies that target tissue healing as the anatomy of larger animals more closely resembles human dento-alveolar architecture. This review focuses on the animal models available for the study of regeneration in periodontal research and implantology; the advantages and disadvantages of each animal model; the interpretation of data acquired; and future perspectives of animal research, with a discussion of possible nonanimal alternatives. Power calculations in such studies are crucial in order to use a sample size that is large enough to generate statistically useful data, whilst, at the same time, small enough to prevent the unnecessary use of animals.
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Sundew plant, a potential source of anti-inflammatory agents, selectively induces G2/M arrest and apoptosis in MCF-7 cells through upregulation of p53 and Bax/Bcl-2 ratio. Cell Death Discov 2016; 2:15062. [PMID: 27551490 PMCID: PMC4979533 DOI: 10.1038/cddiscovery.2015.62] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/05/2015] [Accepted: 10/25/2015] [Indexed: 02/02/2023] Open
Abstract
The worldwide cancer incidences are remarkable despite the advancement in cancer drug discovery field, highlighting the need for new therapies focusing on cancer cell and its microenvironment, including inflammation. Several species of Drosera (family: Droseraceae) are used in various traditional as well as homeopathic systems of medicine. Drosera burmannii Vahl. is also enlisted in French Pharmacopoeia in 1965 for the treatment of inflammatory diseases, including chronic bronchitis, asthma and whooping cough. The present study is designed to substantiate the potential of D. burmannii in in vitro anticancer activity and its relation with anti-inflammatory property. In vitro anticancer study revealed that DBME is inhibiting the proliferation of MCF-7 cells without affecting the viability of other malignant and non-malignant cells. DBME induced G2/M phase arrest and apoptosis in MCF-7 cells by suppressing the expression of cyclin A1, cyclin B1 and Cdk-1 and increasing the expression of p53, Bax/Bcl-2 ratio leading to activation of caspases and PARP degradation. Presence of caspase-8 (Z-IETD-fmk) and caspase-9 (Z-LEHD-fmk) inhibitors alone did prevent the apoptosis partially while apoptosis prevention was significantly observed when used in combination, suggesting vital role of caspases in DBME-induced apoptosis in MCF-7 cells. DBME also downregulated LPS-induced increased expression of iNOS, COX-2 and TNF-α along with suppression on intracellular ROS production that confirms the potential of DBME as anti-inflammatory extract. GCMS analysis revealed the presence of four major compounds hexadecanoic acid, tetradecanoic acid, hexadecen-1-ol, trans-9 and 1-tetradecanol along with some other fatty acid derivatives and carotenoids (Beta-doradecin) in DBME. These findings confirmed the anti-inflammatory activity of DBME, which is already listed in French Pharmacopeia in 1965. Here we have additionally reported the anti-breast cancer activity of DBME and its relation to the anti-inflammatory potential. Hence, an ethnopharmacological approach can be considered as useful tool for the discovery of new drug leads.
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Liu Y, Zhang Y, Wang L, Guo Y, Xiao S. Prevalence of Porphyromonas gingivalis four rag locus genotypes in patients of orthodontic gingivitis and periodontitis. PLoS One 2013; 8:e61028. [PMID: 23593379 PMCID: PMC3617233 DOI: 10.1371/journal.pone.0061028] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Accepted: 03/05/2013] [Indexed: 12/26/2022] Open
Abstract
Porphyromonas gingivalis is considered as a major etiological agent in periodontal diseases and implied to result in gingival inflammation under orthodontic appliance. rag locus is a pathogenicity island found in Porphyromonas gingivalis. Four rag locus variants are different in pathogenicity of Porphyromonas gingivalis. Moreover, there are different racial and geographic differences in distribution of rag locus genotypes. In this study, we assessed the prevalence of Porphyromonas gingivalis and rag locus genotypes in 102 gingival crevicular fluid samples from 57 cases of gingivitis patients with orthodontic appliances, 25 cases of periodontitis patients and 20 cases of periodontally healthy people through a 16S rRNA-based PCR and a multiplex PCR. The correlations between Porphyromona.gingivalis/rag locus and clinical indices were analyzed. The prevalence of Porphyromonas gingivalis and rag locus genes in periodontitis group was the highest among three groups and higher in orthodontic gingivitis than healthy people (p<0.01). An obviously positive correlation was observed between the prevalence of Porphyromonas gingivalis/rag locus and gingival index. rag-3 and rag-4 were the predominant genotypes in the patients of orthodontic gingivitis and mild-to-moderate periodontitis in Shandong. Porphyromonas.gingivalis carrying rag-1 has the strong virulence and could be associated with severe periodontitis.
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Affiliation(s)
- Yi Liu
- Pediatric Research Institute, Qilu Children's Hospital of Shandong University, Ji'nan, Shandong, China
| | - Yujie Zhang
- Department of Orthodontic, Jinan Stomatological Hospital, Jinan, Shandong, China
| | - Lili Wang
- Clinical Laboratory, Jinan Central Hospital of Shandong University, Jinan, Shandong, China
| | - Yang Guo
- Department of Orthodontic, Jinan Stomatological Hospital, Jinan, Shandong, China
| | - Shuiqing Xiao
- Department of Orthodontic, Jinan Stomatological Hospital, Jinan, Shandong, China
- * E-mail:
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Kebschull M, Papapanou PN. Periodontal microbial complexes associated with specific cell and tissue responses. J Clin Periodontol 2011; 38 Suppl 11:17-27. [DOI: 10.1111/j.1600-051x.2010.01668.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Hasturk H, Goguet-Surmenian E, Blackwood A, Andry C, Kantarci A. 1-Tetradecanol Complex: Therapeutic Actions in Experimental Periodontitis. J Periodontol 2009; 80:1103-13. [DOI: 10.1902/jop.2009.090002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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