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Suri S, Khan SS, Naeem S, Nisa ZU, Alam N, Majeed S, Kumar S, Khan RA. The beneficial effect of Allium Cepa bulb extract on reproduction of rats; A two-generation study on fecundity and sex hormones. PLoS One 2024; 19:e0294999. [PMID: 38483938 PMCID: PMC10939208 DOI: 10.1371/journal.pone.0294999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 11/08/2023] [Indexed: 03/17/2024] Open
Abstract
Allium Cepa Linn. (Onions) has extensively been used in traditional medicine, is one of the important Allium species regularly used in our daily diet, and has been the source of robust phenolic compounds. The current study is intended to evaluate the fecundity-enhancing effect of A. Cepa on the reproductive performance of two successive generations of rats; F0 and F1. A. Cepa extract was initially tested for in vitro antioxidant assay via DPPH and ROS, followed by in vivo toxicity testing. In the fecundity assessment, eighteen pairs of male and female rats (n = 36, 1:1, F0 generation) were divided into three groups and dosed with 75mg/kg and 150 mg/kg daily of A. Cepa extract and saline respectively, up to pre-cohabitation, cohabitation, gestation and lactation period. The reproductive performance, including body weight, live birth index, fertility index, and litter size, was assessed. Various parameters like Hematological, Hormonal (FSH, LH, Testosterone, estradiol), antioxidant markers (SOD, Glutathione peroxidase) and lipid profile of F0 and F1 generations were assessed with evaluation of histopathology of male and female organs. Ethanolic extract of A. Cepa showed the greatest antioxidant potential in DPPH and ROS methods. The continued exposure of the F0 and F1 generations to A. Cepa extract did not affect body weight, fertility index, litter size, and survival index. However, semen pH, sperm motility, sperm count, sperm viability, and semen volume were significantly improved in both generations. We have found pronounced fecundity outcomes in both genders of F0 and F1 generations with A. Cepa 150mg/kg/day extract as compared to control. Results showed that A. Cepa significantly increased (P < 0.05) hemoglobin, follicular stimulating hormone (FSH), luteinizing hormone (LH), plasma testosterone and glutathione peroxidase activities, while total lipid, LDL, and cholesterol were significantly decreased (P < 0.05) in both generations. Histology of both generations of animals reveals enhanced spermatogenesis and enhanced folliculogenesis with improved architecture. Altogether, the present results suggest that A. Cepa extract improved fecundity in both male and female rats by improving hormonal activities and oxidative stress.
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Affiliation(s)
- Sadia Suri
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
- Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
| | - Saira Saeed Khan
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
| | - Sadaf Naeem
- Institute of Pharmaceutical Sciences, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Zeb Un Nisa
- Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
| | - Nausheen Alam
- Department of Pharmacology, Federal Urdu University, Karachi, Pakistan
| | - Saba Majeed
- Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
| | - Suresh Kumar
- Department of Pathology, Dow University of Health Sciences, Karachi, Pakistan
| | - Rafeeq Alam Khan
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
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Suri S, Khan SS, Naeem S, Majeed S, Sultana N, Khadim S, Khan RA. A two-generational reproductive study to assess the effects of Juglans regia on reproductive developments in the male and female rats. BRAZ J BIOL 2023; 83:e275534. [PMID: 38055579 DOI: 10.1590/1519-6984.275534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/24/2023] [Indexed: 12/08/2023] Open
Abstract
Environmental pollutants and lifestyle severely threaten human and animal health, leading to disturbances of various functions, including infertility. So, exploring a safe treatment that could effectively reverse infertility remains a challenge. The current study was intended to explore the fertility-enhancing effect of Juglans Regia oil in two successive generations of rats; F0 and F1. J. Regia oil was initially tested for in vitro antioxidant assay via ROS and DPPH, followed by in vivo toxicity testing. In the fertility assessment, eighteen pairs of male and female rats (n=36, 1:1, F0 generation) were divided into three groups and dosed with 1 mL/kg and 2 mL/kg daily of J. Regia oil and saline, respectively, up to pre-cohabitation, cohabitation, gestation and lactation periods. The reproductive performance, including body weight, live birth index, fertility index, and litter size, was assessed. Hormonal and antioxidant markers of F1 generations were assessed with the histopathological evaluation of male and female organs. The oil of J. Regia showed great antioxidant potential (P < 0.05) in DPPH (1,1-diphenyl-2-picrylhydrazyl) and ROS (Reactive Oxygen Species) methods (P<0.05). The continued exposure of the F0 and F1 generations to J. Regia oil did not affect body weight, fertility index, litter size, and survival index. We have found pronounced fertility outcomes in both genders of F0 and F1 generations with J. Regia 2 mL/kg/day in comparison to the control. Results showed that J. Regia significantly increased (P < 0.05) luteinizing hormone (LH), plasma testosterone, follicular stimulating hormone (FSH), glutathione peroxidase (GPx) and superoxide dismutase (SOD) activities in both generations. Histology of both generations reveals improved spermatogenesis and folliculogenesis with enhanced architecture. Altogether, the present results suggest that J. Regia improved fertility in both male and female rats by improving hormonal activities and oxidative stress.
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Affiliation(s)
- S Suri
- University of Karachi, Faculty of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology, Karachi, Pakistan
- Ziauddin University, Faculty of Pharmacy, Karachi, Pakistan
| | - S S Khan
- University of Karachi, Faculty of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology, Karachi, Pakistan
| | - S Naeem
- Jinnah Sindh Medical University, Institute of Pharmaceutical Sciences, Karachi, Pakistan
| | - S Majeed
- Ziauddin University, Faculty of Pharmacy, Karachi, Pakistan
| | - N Sultana
- University of Karachi, Faculty of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology, Karachi, Pakistan
| | - S Khadim
- University of Karachi, Faculty of Pharmacy and Pharmaceutical Sciences, Department of Pharmacy Practice, Karachi, Pakistan
| | - R A Khan
- University of Karachi, Faculty of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology, Karachi, Pakistan
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Batista LAS, dos Reis-Prado AH, Chaves HGDS, de Arantes LC, Morgan LFSA, André CB, Suzuki TY, Benetti F. Can different agents reduce the damage caused by bleaching gel to pulp tissue? A systematic review of basic research. Restor Dent Endod 2023; 48:e39. [PMID: 38053785 PMCID: PMC10695728 DOI: 10.5395/rde.2023.48.e39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 12/07/2023] Open
Abstract
Objectives This study aimed to investigate the effectiveness of different topical/systemic agents in reducing the damage caused by bleaching gel to pulp tissue or cells. Materials and Methods Electronic searches were performed in July 2023. In vivo and in vitro studies evaluating the effects of different topical or systemic agents on pulp inflammation or cytotoxicity after exposure to bleaching agents were included. The risk of bias was assessed. Results Out of 1,112 articles, 27 were included. Nine animal studies evaluated remineralizing/anti-inflammatories agents in rat molars subjected to bleaching with 35%-38% hydrogen peroxide (HP). Five of these studies demonstrated a significant reduction in inflammation caused by HP when combined with bioglass or MI Paste Plus (GC America), or following KF-desensitizing or Otosporin treatment (n = 3). However, orally administered drugs did not reduce pulp inflammation (n = 4). Cytotoxicity (n = 17) was primarily assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay on human dental pulp cells and mouse dental papilla Cell-23 cells. Certain substances, including sodium ascorbate, butein, manganese chloride, and peroxidase, were found to reduce cytotoxicity, particularly when applied prior to bleaching. The risk of bias was high in animal studies and low in laboratory studies. Conclusions Few in vivo studies have evaluated agents to reduce the damage caused by bleaching gel to pulp tissue. Within the limitations of these studies, it was found that topical agents were effective in reducing pulp inflammation in animals and cytotoxicity. Further analyses with human pulp are required to substantiate these findings. Trial Registration PROSPERO Identifier: CRD42022337192.
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Affiliation(s)
- Letícia Aparecida Silva Batista
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | | | | | - Lara Cancella de Arantes
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | | | - Carolina Bosso André
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - Thaís Yumi Suzuki
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - Francine Benetti
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
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Zieniewska I, Maciejczyk M, Zalewska A. The Effect of Selected Dental Materials Used in Conservative Dentistry, Endodontics, Surgery, and Orthodontics as Well as during the Periodontal Treatment on the Redox Balance in the Oral Cavity. Int J Mol Sci 2020; 21:ijms21249684. [PMID: 33353105 PMCID: PMC7767252 DOI: 10.3390/ijms21249684] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/31/2022] Open
Abstract
Oxidative stress (OS) is a redox homeostasis disorder that results in oxidation of cell components and thus disturbs cell metabolism. OS is induced by numerous internal as well as external factors. According to recent studies, dental treatment may also be one of them. The aim of our work was to assess the effect of dental treatment on the redox balance of the oral cavity. We reviewed literature available in PubMed, Medline, and Scopus databases, including the results from 2010 to 2020. Publications were searched according to the keywords: oxidative stress and dental monomers; oxidative stress and amalgam; oxidative stress and periodontitis, oxidative stress and braces, oxidative stress and titanium; oxidative stress and dental implants, oxidative stress and endodontics treatment, oxidative stress and dental treatment; and oxidative stress and dental composite. It was found that dental treatment with the use of composites, amalgams, glass-ionomers, materials for root canal filling/rinsing, orthodontic braces (made of various metal alloys), titanium implants, or whitening agents can disturb oral redox homeostasis by affecting the antioxidant barrier and increasing oxidative damage to salivary proteins, lipids, and DNA. Abnormal saliva secretion/composition was also observed in dental patients in the course of OS. It is suggested that the addition of antioxidants to dental materials or antioxidant therapy applied during dental treatment could protect the patient against harmful effects of OS in the oral cavity.
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Affiliation(s)
- Izabela Zieniewska
- Doctoral Studies, Medical University of Bialystok, 24a M. Sklodowskiej-Curie Street, 15-274 Bialystok, Poland
- Correspondence: (I.Z.); (A.Z.)
| | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, 15-022 Bialystok, Poland;
| | - Anna Zalewska
- Experimental Dentistry Laboratory, Medical University of Bialystok, 24a M. Sklodowskiej-Curie Street, 15-274 Bialystok, Poland
- Correspondence: (I.Z.); (A.Z.)
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Cytotoxic Effects of Zoom ® Whitening Product in Human Fibroblasts. MATERIALS 2020; 13:ma13071491. [PMID: 32218276 PMCID: PMC7177679 DOI: 10.3390/ma13071491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/22/2020] [Accepted: 03/23/2020] [Indexed: 01/23/2023]
Abstract
Tooth whitening procedures are increasing; however, side effects can occur, such as damage to pulp cells, by the whitening products. This study aims to assess the cellular effects promoted by a whitening product, namely, the oxidative stress fostered by the active agent hydrogen peroxide, with and without photoactivation. Additionally, if cellular recovery occurred, we intended to determine the time point where cells recover from the tooth whitening induced damage. Human fibroblasts were exposed to hydrogen peroxide, Zoom®, Zoom® + irradiation, and irradiation alone. The following analysis was performed: metabolic activity evaluation by the MTT assay; cell viability, mitochondrial membrane potential, peroxides production, superoxide radical production, and reduced glutathione expression by flow cytometry. We determined the IC50 value for all groups, and a dose-dependent cytotoxic effect was verified. At the times analyzed, hydrogen peroxide groups showed no metabolic activity recovery while a cell recovery was observed after 24 h (Zoom®) and 48 h (Zoom® + irradiation). Cell death was seen in hydrogen peroxide and Zoom® + irradiation groups, mainly by apoptosis, and the irradiation had a cytotoxic effect per se. This in vitro study supports that whitening products with moderate hydrogen peroxide (HP) concentration have a temporary effect on cells, allowing a cellular recovery.
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Kumar H, Chattopadhyay S, Das N, Shree S, Patel D, Mohapatra J, Gurjar A, Kushwaha S, Singh AK, Dubey S, Lata K, Kushwaha R, Mohammed R, Dastidar KG, Yadav N, Vishwakarma AL, Gayen JR, Bandyopadhyay S, Chatterjee A, Jain MR, Tripathi AK, Trivedi AK, Chattopadhyay N, Ramachandran R, Sanyal S. Leprosy drug clofazimine activates peroxisome proliferator-activated receptor-γ and synergizes with imatinib to inhibit chronic myeloid leukemia cells. Haematologica 2019; 105:971-986. [PMID: 31371410 PMCID: PMC7109729 DOI: 10.3324/haematol.2018.194910] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/12/2019] [Indexed: 12/12/2022] Open
Abstract
Leukemia stem cells contribute to drug-resistance and relapse in chronic myeloid leukemia (CML) and BCR-ABL1 inhibitor monotherapy fails to eliminate these cells, thereby necessitating alternate therapeutic strategies for patients CML. The peroxisome proliferator-activated receptor-γ (PPARγ) agonist pioglitazone downregulates signal transducer and activator of transcription 5 (STAT5) and in combination with imatinib induces complete molecular response in imatinib-refractory patients by eroding leukemia stem cells. Thiazolidinediones such as pioglitazone are, however, associated with severe side effects. To identify alternate therapeutic strategies for CML we screened Food and Drug Administration-approved drugs in K562 cells and identified the leprosy drug clofazimine as an inhibitor of viability of these cells. Here we show that clofazimine induced apoptosis of blood mononuclear cells derived from patients with CML, with a particularly robust effect in imatinib-resistant cells. Clofazimine also induced apoptosis of CD34+38- progenitors and quiescent CD34+ cells from CML patients but not of hematopoietic progenitor cells from healthy donors. Mechanistic evaluation revealed that clofazimine, via physical interaction with PPARγ, induced nuclear factor kB-p65 proteasomal degradation, which led to sequential myeloblastoma oncoprotein and peroxiredoxin 1 downregulation and concomitant induction of reactive oxygen species-mediated apoptosis. Clofazimine also suppressed STAT5 expression and consequently downregulated stem cell maintenance factors hypoxia-inducible factor-1α and -2α and Cbp/P300 interacting transactivator with Glu/Asp-rich carboxy-terminal domain 2 (CITED2). Combining imatinib with clofazimine caused a far superior synergy than that with pioglitazone, with clofazimine reducing the half maximal inhibitory concentration (IC50) of imatinib by >4 logs and remarkably eroding quiescent CD34+ cells. In a K562 xenograft study clofazimine and imatinib co-treatment showed more robust efficacy than the individual treatments. We propose clinical evaluation of clofazimine in imatinib-refractory CML.
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Affiliation(s)
- Harish Kumar
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow
| | - Sourav Chattopadhyay
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow.,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
| | - Nabanita Das
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow
| | - Sonal Shree
- Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow
| | - Dinesh Patel
- Zydus Research Center, Moraiya, Ahmedabad, Gujarat
| | | | - Anagha Gurjar
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow.,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
| | - Sapana Kushwaha
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow
| | | | - Shikha Dubey
- Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow
| | - Kiran Lata
- Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow
| | - Rajesh Kushwaha
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow
| | - Riyazuddin Mohammed
- Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow
| | | | | | | | - Jiaur Rahaman Gayen
- Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow.,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
| | - Sanghamitra Bandyopadhyay
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow
| | | | | | - Anil Kumar Tripathi
- Department of Clinical Hematology and Medical Oncology, King George's Medical University, Lucknow, Uttar Pradesh
| | - Arun Kumar Trivedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow.,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
| | - Naibedya Chattopadhyay
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, India.,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
| | - Ravishankar Ramachandran
- AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow.,Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow .,AcSIR, CSIR-Central Drug Research Institute Campus, Lucknow
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Kanane A, Rouaki F, Brahim Errahmani M, Laraba A, Mesbah H, Ammouche A. Pro-oxidant effects of a high α-tocopherol dose on kidney antioxidant biomarkers and histopathological aspects. INT J VITAM NUTR RES 2019; 87:179-190. [PMID: 30839249 DOI: 10.1024/0300-9831/a000512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The aim of this study is to evaluate the effect of α-tocopherol supplementation at two doses (600 and 1200 mg × kg-1) on kidney antioxidant status and the histopathological changes in Wistar rats after 12 weeks of exposure at different diets. Forty rats has been divided into 4 groups of 10 rats each, the control group received basal diet with 5 % fresh sunflower oil (FSO), the second group: 5 % oxidized sunflower oil (OSO), the third group: 5 % OSO supplemented with 600 mg × kg-1 α-tocopherol and the fourth group: 5 % OSO supplemented with 1200 mg × kg-1 α-tocopherol. In OSO groups, the results showed highly significant increases of LPO (from 31.3 ± 0.9 to 53.8 ± 1.2 nmol of MDA formed/min/mg protein, p < 0.0001) with a significant decrease (p < = 0.001) of the antioxidant enzymatic activities (CAT, SOD, GPX, GR and G6PDH), body weight (339 ± 9 to 290 ± 3 g) and α-tocopherol levels (13.6 ± 0.6 to 6.5 ± 0.4 μg/mg protein). In OSO groups with 600 mg × kg-1 α-tocopherol, an antioxidant effect was found, reflected by a return of the parameters to values similar to those of the control group. However, higher doses of α-tocopherol (1200 mg × kg-1) induced a depletion of antioxidant status, α-tocopherol levels (6.0 ± 0.3 μg/mg protein, p < 0.001) and a very highly significant rise (p < 0.0001) of LPO content (54.86 ± 0.01 nmol of MDA formed/min/mg protein). The kidney tissues also showed changes in glomerular, severe inflammatory cells infiltration, and formation of novel vessels. So, we can conclude that the oxidative stress is attenuated by a moderate administration of 600 mg × kg-1 α-tocopherol, while a pro-oxidant effect occurs at 1200 mg × kg-1 α-tocopherol.
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Affiliation(s)
- Amel Kanane
- 1 Department of Biology, Faculty of Life and Natural Sciences, Blida 1 University, Blida, Algeria.,2 National Agronomic School, Food Technology Department, El Harrach, Algiers, Algeria
| | - Fayrouz Rouaki
- 1 Department of Biology, Faculty of Life and Natural Sciences, Blida 1 University, Blida, Algeria.,2 National Agronomic School, Food Technology Department, El Harrach, Algiers, Algeria
| | - Mohamed Brahim Errahmani
- 1 Department of Biology, Faculty of Life and Natural Sciences, Blida 1 University, Blida, Algeria.,3 Department of Chemistry, Faculty of Sciences, Blida 1 University, Blida, Algeria
| | - Abdenour Laraba
- 4 Hospital of Bab El Oued, C. H. U.-B. E. O., Algiers, Algeria
| | - Hayet Mesbah
- 5 Department of Sciences, M'Hamed Bougara University of Boumerdes, Boumerdes, Algeria
| | - Ali Ammouche
- 2 National Agronomic School, Food Technology Department, El Harrach, Algiers, Algeria
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8
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Nari-Ratih D, Widyastuti A. Effect of antioxidants on the shear bond strength of composite resin to enamel following extra-coronal bleaching. J Clin Exp Dent 2019; 11:e126-e132. [PMID: 30805116 PMCID: PMC6383909 DOI: 10.4317/jced.55359] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/21/2019] [Indexed: 11/18/2022] Open
Abstract
Background Recently patients need faster treatments, and delaying restoration is not possible following bleaching treatment. The purpose of this study was to determine the effect of antioxidants, namely 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extract on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Material and Methods Seventy premolars were randomly assigned into 7 groups of 10 each. Group 1: bleaching treatment and no antioxidants application. Group 2: composite was built-up immediately after bleaching. Group 3: bleached specimens received composite build-up delayed by 2 weeks. Group 4, 5, 6 and 7: bleached specimens received an application of 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea, and 10% Aloe vera before composite build-up. Specimens were immersed in artificial saliva, stored in an incubator 37°C (24 hours), thermocycling, and tested using a universal testing machine. Data were analyzed by one-way ANOVA and Tukey’s test with 95% level of significance. Results Bleaching caused significantly reduced shear bond strength (p<0.05), and application of 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera produced significantly greater shear bond strength compared to bleached group (P <0.05). However, no significant differences occurred between antioxidant groups (P >0.05). Conclusions Application of antioxidants increased the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extracts produced the same effect on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Key words:Antioxidants, shear bond strength, composite resin, extra-coronal bleaching.
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Affiliation(s)
- Diatri Nari-Ratih
- MDSc., MClinDent (Endodontist), Ph.D. Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Andina Widyastuti
- MClinDent (Endodontis). Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Subhaswaraj P, Sowmya M, Jobina R, Sudharshan SJ, Dyavaiah M, Siddhardha B. Determination of antioxidant potential of Acacia nilotica leaf extract in oxidative stress response system of Saccharomyces cerevisiae. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:5247-5253. [PMID: 28474422 DOI: 10.1002/jsfa.8409] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/27/2017] [Accepted: 05/02/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND From ancient times, plants and plant-derived products have been used as folkloric medicines for a variety of health disorders owing to their tremendous therapeutic potential. The present study aimed to determine the antioxidant efficacy of crude Acacia nilotica extract in the oxidative stress response system of Saccharomyces cerevisiae as a model organism. RESULTS Acacia nilotica showed significant antioxidant activity, with IC50 values of 75.157 and 159.57 µg mL-1 for 2,2-diphenyl-1-picrylhydrazyl radical and hydroxyl radical scavenging activities respectively at a concentration of 500 µg mL-1 . The total antioxidant activity of A. nilotica showed an ascorbic acid equivalent of 152.79 ± 7.43 µg mL-1 . The presence of phytoconstituents such as phytol and α-tocopherol from gas chromatography/mass spectrometry analysis confirmed the potential of A. nilotica as an antioxidant. The results were validated using the stress response mechanism in S. cerevisiae wild type and its isogenic deletion strains sod1Δ and tsa1Δ. Acacia nilotica substantially neutralized reactive oxygen species generated by hydrogen peroxide in mutant strains, as evident from spot assay and fluorescence assay using fluorescence microscopy and intensity studies. CONCLUSION The results suggested the efficacy of A. nilotica as a potent antioxidant in the S. cerevisiae system for the first time and its use in neutraceuticals/therapeutics. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Pattnaik Subhaswaraj
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Mani Sowmya
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Rajkumari Jobina
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - S J Sudharshan
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
- DBT-Interdisciplinary Program in Life Sciences, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Madhu Dyavaiah
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
- DBT-Interdisciplinary Program in Life Sciences, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Busi Siddhardha
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
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10
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Subhaswaraj P, Sowmya M, Bhavana V, Dyavaiah M, Siddhardha B. Determination of antioxidant activity of Hibiscus sabdariffa and Croton caudatus in Saccharomyces cerevisiae model system. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2017; 54:2728-2736. [PMID: 28928512 PMCID: PMC5583102 DOI: 10.1007/s13197-017-2709-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/10/2017] [Accepted: 05/16/2017] [Indexed: 12/12/2022]
Abstract
From ancient times, plants and plant derived products are exploited as a prominent source of folkloric medicines with tremendous therapeutic potential for an array of health disorders. In the present study, ethanolic leaf extract of Hibiscus sabdariffa and Croton caudatus were evaluated for free radical scavenging activity in Saccharomyces cerevisiae model system. H. sabdariffa and C. caudatus showed tremendous DPPH free radical scavenging potential with an IC50 value of 184.88 and 305.39 µg/mL respectively at a concentration of 500 µg/mL. The ethanolic leaf extract of H. sabdariffa and C. caudatus also showed significant hydoxyl radical scavenging and total antioxidant activity. Ascorbic acid was used as positive control. The in vitro antioxidant activity was further supported by in vivo studies using radical scavenging mechanism in S. cerevisiae wild type and its isogenic deletion strains sod1∆ and tsa1∆. The mutant yeast cells substantially scavenged the stress generated by H2O2 when supplemented with ethanolic leaf extract of H. sabdariffa and C. caudatus as evident from spot assays followed by fluorescence assay (DCF-DA) using fluorescence microscopic and intensity studies. H. sabdariffa and C.caudatus significantly neutralize the ROS level in yeast mutants with concomitant decrease in fluorescence intensity as compared to the untreated yeast cells. The results suggested the efficacy of H. sabdariffa and C. caudatus as potent antioxidants in yeast system and thus their futuristic applications in therapeutics.
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Affiliation(s)
- Pattnaik Subhaswaraj
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, 605014 India
| | - M Sowmya
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, 605014 India
| | - V Bhavana
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, 605014 India
| | - Madhu Dyavaiah
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, 605014 India
| | - Busi Siddhardha
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, 605014 India
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11
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Lima AF, Marques MR, Soares DG, Hebling J, Marchi GM, de Souza Costa CA. Antioxidant therapy enhances pulpal healing in bleached teeth. Restor Dent Endod 2016; 41:44-54. [PMID: 26877990 PMCID: PMC4751206 DOI: 10.5395/rde.2016.41.1.44] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/13/2015] [Indexed: 01/18/2023] Open
Abstract
Objectives The purpose of this study was to evaluate the histopathological effects of an antioxidant therapy on the pulp tissue of rat teeth exposed to a bleaching gel with 35% hydrogen peroxide. Materials and Methods Forty rats were subjected to oral ingestion by gavage of distilled water (DW) or ascorbic acid (AA) 90 min before the bleaching therapy. For the bleaching treatment, the agent was applied twice for 5 min each to buccal surfaces of the first right mandibular molars. Then, the animals were sacrificed at 6 hr, 24 hr, 3 day, or 7 day post-bleaching, and the teeth were processed for microscopic evaluation of the pulp tissue. Results At 6 hr, the pulp tissue showed moderate inflammatory reactions in all teeth of both groups. In the DW and AA groups, 100% and 80% of teeth exhibited pulp tissue with significant necrosis and intense tissue disorganization, respectively. At 24 hr, the AA-treated group demonstrated a greater regenerative capability than the DW group, with less intense inflammatory reaction and new odontoblast layer formation in 60% of the teeth. For up to the 7 day period, the areas of pulpal necrosis were replaced by viable connective tissue, and the dentin was underlined by differentiated odontoblast-like cells in most teeth of both groups. Conclusions A slight reduction in initial pulpal damage during post-bleaching was promoted by AA therapy. However, the pulp tissue of AA-treated animals featured faster regenerative potential over time.
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Affiliation(s)
- Adriano Fonseca Lima
- Dental Research Division, School of Dentistry, Paulista University, Sao Paulo, SP, Brazil
| | - Marcelo Rocha Marques
- Department of Morphology, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Diana Gabriela Soares
- Department of Physiology and Pathology, Araraquara School of Dentistry, University Estadual Paulista, Araraquara, SP, Brazil
| | - Josimeri Hebling
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Giselle Maria Marchi
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology, Araraquara School of Dentistry, University Estadual Paulista, Araraquara, SP, Brazil
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