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Tossounian MA, Zhao Y, Yu BYK, Markey SA, Malanchuk O, Zhu Y, Cain A, Gout I. Low-molecular-weight thiol transferases in redox regulation and antioxidant defence. Redox Biol 2024; 71:103094. [PMID: 38479221 PMCID: PMC10950700 DOI: 10.1016/j.redox.2024.103094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 03/24/2024] Open
Abstract
Low-molecular-weight (LMW) thiols are produced in all living cells in different forms and concentrations. Glutathione (GSH), coenzyme A (CoA), bacillithiol (BSH), mycothiol (MSH), ergothioneine (ET) and trypanothione T(SH)2 are the main LMW thiols in eukaryotes and prokaryotes. LMW thiols serve as electron donors for thiol-dependent enzymes in redox-mediated metabolic and signaling processes, protect cellular macromolecules from oxidative and xenobiotic stress, and participate in the reduction of oxidative modifications. The level and function of LMW thiols, their oxidized disulfides and mixed disulfide conjugates in cells and tissues is tightly controlled by dedicated oxidoreductases, such as peroxiredoxins, glutaredoxins, disulfide reductases and LMW thiol transferases. This review provides the first summary of the current knowledge of structural and functional diversity of transferases for LMW thiols, including GSH, BSH, MSH and T(SH)2. Their role in maintaining redox homeostasis in single-cell and multicellular organisms is discussed, focusing in particular on the conjugation of specific thiols to exogenous and endogenous electrophiles, or oxidized protein substrates. Advances in the development of new research tools, analytical methodologies, and genetic models for the analysis of known LMW thiol transferases will expand our knowledge and understanding of their function in cell growth and survival under oxidative stress, nutrient deprivation, and during the detoxification of xenobiotics and harmful metabolites. The antioxidant function of CoA has been recently discovered and the breakthrough in defining the identity and functional characteristics of CoA S-transferase(s) is soon expected.
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Affiliation(s)
- Maria-Armineh Tossounian
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Yuhan Zhao
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Bess Yi Kun Yu
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Samuel A Markey
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Oksana Malanchuk
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom; Department of Cell Signaling, Institute of Molecular Biology and Genetics, Kyiv, 143, Ukraine
| | - Yuejia Zhu
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Amanda Cain
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Ivan Gout
- Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, United Kingdom; Department of Cell Signaling, Institute of Molecular Biology and Genetics, Kyiv, 143, Ukraine.
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Guo J, He Y, Lin C, Jiang Q, Xing HW, Zhang YC, Shen GZ, Lin HX, Guo L, Yang Q. Integrating pretreatment MRI-detected nodal features and Epstein-Barr virus DNA to identify optimal candidates for intensity-modulated radiotherapy alone in patients with stage II nasopharyngeal carcinoma. Oral Oncol 2023; 146:106574. [PMID: 37741017 DOI: 10.1016/j.oraloncology.2023.106574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
OBJECTIVES To develop and validate a prognostic nomogram based on MRI-detected features of retropharyngeal and cervical lymph nodes and Epstein-Barr virus (EBV) DNA in patients with stage II nasopharyngeal carcinoma (NPC) to distinguish low-risk patients for whom intensity-modulated radiotherapy (IMRT) alone is sufficient. METHODS This retrospective study enrolled 894 patients with stage II NPC (596 and 298 in the training and validation cohorts, respectively) with pretreatment MRI between August 2010 and May 2019. All patients received IMRT with or without additional chemotherapy. We identified independent risk factors using univariate and multivariate Cox regression analyses. Survival was compared using Kaplan-Meier curves with the log-rank test. RESULTS Independent factors derived from the multivariate analysis include cervical nodal necrosis (CNN), the extracapsular spread (ECS) of cervical and retropharyngeal lymph nodes, and gamma-glutamyl transferase (γ-GGT). Nomograms A, B, and C were established based on the clinical [tumor-node-metastasis (TNM) stage + Epstein-Barr virus (EBV) DNA], the clinical-radiological [all independent predictors] and the combined models [the clinical-radiological model + EBV DNA], respectively. Nomogram C (C-index 0.769 [0.718-0.820]) demonstrated better risk discrimination than nomogram B (0.762 [0.715-0.809]), nomogram A (0.619 [0.564-0.674]), and the TNM stage (0.560 [0.509-0.611]). In the low-risk group divided by nomogram C, no significant survival differences were observed between patients treated with radiotherapy (RT) alone and other regimens including additional chemotherapy. CONCLUSIONS The nomogram combining MRI-detected retropharyngeal and cervical lymph node features with pretreatment EBV-DNA improved the prognostic risk stratification for stage II NPC.
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Affiliation(s)
- Jia Guo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Yun He
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Imaging, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Chao Lin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Qi Jiang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Hong-Wei Xing
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Information, Sun Yat-Sen University Cancer Center, Guangzhou 510060, PR China.
| | - Yu-Chen Zhang
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Guan-Zhu Shen
- Department of Radiation Oncology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China.
| | - Huan-Xin Lin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Ling Guo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
| | - Qi Yang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
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Treatment of Inactive Ovaries of Holstein Dairy Cows by Epidural Injection of GnRH Analogue (Receptal) and Its Impact on the Reproductive Hormones, Oxidant/Antioxidant Profile and Micro and Macro-Elements Profile. Animals (Basel) 2023; 13:ani13040653. [PMID: 36830440 PMCID: PMC9951676 DOI: 10.3390/ani13040653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/01/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
This study was designed to evaluate a new therapeutic approach for inactive ovaries based on the epidural administration of a GnRH agonist (Receptal) and an investigation of the impact of this treatment on the hormonal, oxidant/antioxidant and micro- and macro-element profiles. Sixty cows with postpartum anestrus were divided into two groups: the first group (group Repid, n = 30) was administered an epidural injection of Receptal, while the second group (group Cepid, n = 30) received saline and was considered the control group. Evaluation of hormonal (progesterone, FSH, LH, testosterone, and cortisol), oxidant/antioxidant (MDA, SOD, GPx and TAC) as well as micro- and macroelement (calcium, phosphorus, manganese and magnesium) profiles was done in serum. The results showed that the epidural injection of Receptal has the potential to induce estrus response and conception incidence in treated cows. Compared to the control group, progesterone, FSH, and LH concentrations were significantly increased in the treated group, whereas testosterone and cortisol decreased (p < 0.05) following treatment. In addition, the treated group had greater TAC and GPx concentrations than the control group. Serum concentrations of magnesium increased (p < 0.05) following receptal treatment, but differences in other minerals were not detected. This research suggests a novel, effective method of treating inactive ovaries with epidural infusion of a GnRH agonist.
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Ghased E, Lordejani HA, Vedaei M, Massah AR. Solvent-free synthesis and antibacterial evaluation of novel mercaptobenzenesulfonamides. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02712-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Antihelminthic effect of thymoquinone against biliary amphistome, Gigantocotyle explanatum. Exp Parasitol 2022; 243:108421. [DOI: 10.1016/j.exppara.2022.108421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 11/08/2022]
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Hussain R, Khan I, Jamal A, Mohamed BB, Khan A. Evaluation of Hematological, Oxidative Stress, and Antioxidant Profile in Cattle Infected with Brucellosis in Southern Punjab, Pakistan. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7140909. [PMID: 35898677 PMCID: PMC9314157 DOI: 10.1155/2022/7140909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/05/2022] [Indexed: 01/09/2023]
Abstract
Brucellosis is a well-known and harmful zoonotic disease that poses a severe threat to public health and wild and dairy animals. Due to a lack of monitoring and awareness, disease incidence has increased. Therefore, this study was conducted for the first time to ascertain the status of seroprevalence of brucellosis, hematological, oxidative stress, and antioxidant enzymes in different breeds of cattle reared under tropical-desert conditions in Pakistan. This study comprised 570 cattle of different breeds. We recorded some epidemiological traits, including age and gender. The blood samples were obtained from all the cattle, screened with RBPT, and then confirmed by ELISA and PCR. The results recorded an overall 11.75%, 10.7%, and 9.64% prevalence of brucellosis based on RBPT, ELISA, and PCR. We obtained nonsignificant results in different age and sex groups of cattle. The results showed significantly (P ≤ 0.05) lower values of erythrocyte counts, hemoglobin quantity, hematocrit, lymphocytes, and monocytes in infected cases. The results showed that the total leukocyte and neutrophil cells significantly (P ≤ 0.05) increased. The lipid peroxidation parameters (MDA- and NO-scavenging activity of erythrocyte) increased significantly (P ≤ 0.05) in infected cattle, whereas significantly reduced antioxidant enzymes like SOD, RGSH, and CAT were. Similarly, significantly lower serum albumin levels and total serum proteins were recorded in infected cattle.
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Affiliation(s)
- Riaz Hussain
- Department of Pathology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Iahtasham Khan
- Section of Epidemiology and Public Health, Department of Clinical Sciences, University of Veterinary and Animal Sciences, Lahore Sub-Campus Jhang 12-Km Chiniot Road, Jhang 35200, Pakistan
| | - Adil Jamal
- Sciences and Research, College of Nursing, Umm Al Qura University-715, Makkah, Saudi Arabia
| | | | - Ahrar Khan
- Shandong Vocational Animal Science and Veterinary College, Weifang 261061, China
- Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
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Sulforaphane and Its Bifunctional Analogs: Synthesis and Biological Activity. Molecules 2022; 27:molecules27051750. [PMID: 35268851 PMCID: PMC8911885 DOI: 10.3390/molecules27051750] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/04/2022] [Accepted: 03/05/2022] [Indexed: 12/27/2022] Open
Abstract
For decades, various plants have been studied as sources of biologically active compounds. Compounds with anticancer and antimicrobial properties are the most frequently desired. Cruciferous plants, including Brussels sprouts, broccoli, and wasabi, have a special role in the research studies. Studies have shown that consumption of these plants reduce the risk of lung, breast, and prostate cancers. The high chemopreventive and anticancer potential of cruciferous plants results from the presence of a large amount of glucosinolates, which, under the influence of myrosinase, undergo an enzymatic transformation to biologically active isothiocyanates (ITCs). Natural isothiocyanates, such as benzyl isothiocyanate, phenethyl isothiocyanate, or the best-tested sulforaphane, possess anticancer activity at all stages of the carcinogenesis process, show antibacterial activity, and are used in organic synthesis. Methods of synthesis of sulforaphane, as well as its natural or synthetic bifunctional analogues with sulfinyl, sulfanyl, sulfonyl, phosphonate, phosphinate, phosphine oxide, carbonyl, ester, carboxamide, ether, or additional isothiocyanate functional groups, and with the unbranched alkyl chain containing 2-6 carbon atoms, are discussed in this review. The biological activity of these compounds are also reported. In the first section, glucosinolates, isothiocyanates, and mercapturic acids (their metabolites) are briefly characterized. Additionally, the most studied anticancer and antibacterial mechanisms of ITC actions are discussed.
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Haddad M, Hervé V, Ben Khedher MR, Rabanel JM, Ramassamy C. Glutathione: An Old and Small Molecule with Great Functions and New Applications in the Brain and in Alzheimer's Disease. Antioxid Redox Signal 2021; 35:270-292. [PMID: 33637005 DOI: 10.1089/ars.2020.8129] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Significance: Glutathione (GSH) represents the most abundant and the main antioxidant in the body with important functions in the brain related to Alzheimer's disease (AD). Recent Advances: Oxidative stress is one of the central mechanisms in AD. We and others have demonstrated the alteration of GSH levels in the AD brain, its important role in the detoxification of advanced glycation end-products and of acrolein, a by-product of lipid peroxidation. Recent in vivo studies found a decrease of GSH in several areas of the brain from control, mild cognitive impairment, and AD subjects, which are correlated with cognitive decline. Critical Issues: Several strategies were developed to restore its intracellular level with the l-cysteine prodrugs or the oral administration of γ-glutamylcysteine to prevent alterations observed in AD. To date, no benefit on GSH level or on oxidative biomarkers has been reported in clinical trials. Thus, it remains uncertain if GSH could be considered a potential preventive or therapeutic approach or a biomarker for AD. Future Directions: We address how GSH-coupled nanocarriers represent a promising approach for the functionalization of nanocarriers to overcome the blood/brain barrier (BBB) for the brain delivery of GSH while avoiding cellular toxicity. It is also important to address the presence of GSH in exosomes for its potential intercellular transfer or its shuttle across the BBB under certain conditions. Antioxid. Redox Signal. 35, 270-292.
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Affiliation(s)
- Mohamed Haddad
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Canada.,Institute on Nutrition and Functional Foods, Université Laval, Québec, Canada
| | - Vincent Hervé
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Canada.,Institute on Nutrition and Functional Foods, Université Laval, Québec, Canada
| | - Mohamed Raâfet Ben Khedher
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Canada.,Institute on Nutrition and Functional Foods, Université Laval, Québec, Canada
| | | | - Charles Ramassamy
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, Canada.,Institute on Nutrition and Functional Foods, Université Laval, Québec, Canada
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Jiang C, Huang H, Kang X, Yang L, Xi Z, Sun H, Pluth MD, Yi L. NBD-based synthetic probes for sensing small molecules and proteins: design, sensing mechanisms and biological applications. Chem Soc Rev 2021; 50:7436-7495. [PMID: 34075930 PMCID: PMC8763210 DOI: 10.1039/d0cs01096k] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Compounds with a nitrobenzoxadiazole (NBD) skeleton exhibit prominent useful properties including environmental sensitivity, high reactivity toward amines and biothiols (including H2S) accompanied by distinct colorimetric and fluorescent changes, fluorescence-quenching ability, and small size, all of which facilitate biomolecular sensing and self-assembly. Amines are important biological nucleophiles, and the unique activity of NBD ethers with amines has allowed for site-specific protein labelling and for the detection of enzyme activities. Both H2S and biothiols are involved in a wide range of physiological processes in mammals, and misregulation of these small molecules is associated with numerous diseases including cancers. In this review, we focus on NBD-based synthetic probes as advanced chemical tools for biomolecular sensing. Specifically, we discuss the sensing mechanisms and selectivity of the probes, the design strategies for multi-reactable multi-quenching probes, and the associated biological applications of these important constructs. We also highlight self-assembled NBD-based probes and outline future directions for NBD-based chemosensors. We hope that this comprehensive review will facilitate the development of future probes for investigating and understanding different biological processes and aid the development of potential theranostic agents.
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Affiliation(s)
- Chenyang Jiang
- State Key Laboratory of Organic-Inorganic Composites and Beijing Key Lab of Bioprocess, Beijing University of Chemical Technology (BUCT), Beijing 100029, China.
| | - Haojie Huang
- State Key Laboratory of Organic-Inorganic Composites and Beijing Key Lab of Bioprocess, Beijing University of Chemical Technology (BUCT), Beijing 100029, China.
| | - Xueying Kang
- State Key Laboratory of Organic-Inorganic Composites and Beijing Key Lab of Bioprocess, Beijing University of Chemical Technology (BUCT), Beijing 100029, China.
| | - Liu Yang
- Department of Chemistry and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Zhen Xi
- State Key Laboratory of Elemento-Organic Chemistry and Department of Chemical Biology, College of Chemistry, National Pesticide Engineering Research Center, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China.
| | - Hongyan Sun
- Department of Chemistry and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China. and Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Michael D Pluth
- Department of Chemistry and Biochemistry, Materials Science Institute, Knight Campus for Accelerating Scientific Impact, Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA.
| | - Long Yi
- State Key Laboratory of Organic-Inorganic Composites and Beijing Key Lab of Bioprocess, Beijing University of Chemical Technology (BUCT), Beijing 100029, China.
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Comparative Transcriptomics Reveals Distinct Gene Expressions of a Model Ciliated Protozoa Feeding on Bacteria-Free Medium, Digestible, and Digestion-Resistant Bacteria. Microorganisms 2020; 8:microorganisms8040559. [PMID: 32295093 PMCID: PMC7232342 DOI: 10.3390/microorganisms8040559] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/07/2020] [Accepted: 04/11/2020] [Indexed: 01/03/2023] Open
Abstract
Bacterivory is an important ecological function of protists in natural ecosystems. However, there are diverse bacterial species resistant to protistan digestion, which reduces the carbon flow to higher trophic levels. So far, a molecular biological view of metabolic processes in heterotrophic protists during predation of bacterial preys of different digestibility is still lacking. In this study, we investigated the growth performance a ciliated protozoan Tetrahymenathermophila cultivated in a bacteria-free Super Proteose Peptone (SPP) medium (control), and in the media mixed with either a digestion-resistant bacterial species (DRB) or a digestible strain of E. coli (ECO). We found the protist population grew fastest in the SPP and slowest in the DRB treatment. Fluorescence in situ hybridization confirmed that there were indeed non-digested, viable bacteria in the ciliate cells fed with DRB, but none in other treatments. Comparative analysis of RNA-seq data showed that, relative to the control, 637 and 511 genes in T. thermophila were significantly and differentially expressed in the DRB and ECO treatments, respectively. The protistan expression of lysosomal proteases (especially papain-like cysteine proteinases), GH18 chitinases, and an isocitrate lyase were upregulated in both bacterial treatments. The genes encoding protease, glycosidase and involving glycolysis, TCA and glyoxylate cycles of carbon metabolic processes were higher expressed in the DRB treatment when compared with the ECO. Nevertheless, the genes for glutathione metabolism were more upregulated in the control than those in both bacterial treatments, regardless of the digestibility of the bacteria. The results of this study indicate that not only bacterial food but also digestibility of bacterial taxa modulate multiple metabolic processes in heterotrophic protists, which contribute to a better understanding of protistan bacterivory and bacteria-protists interactions on a molecular basis.
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Wang Y, Zhang Z, Lu X, Zong H, Zhuge B. Transcription factor Hap5 induces gsh2 expression to enhance 2-phenylethanol tolerance and production in an industrial yeast Candida glycerinogenes. Appl Microbiol Biotechnol 2020; 104:4093-4107. [PMID: 32162090 DOI: 10.1007/s00253-020-10509-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/13/2020] [Accepted: 02/28/2020] [Indexed: 02/07/2023]
Abstract
2-Phenylethanol (2-PE) is an important flavor compound but also impairs cell growth severely, which in turn blocks its bioproduction. However, the molecular mechanism of 2-PE tolerance is unclear. In this study, a superb 2-PE stress-tolerant and producing yeast, Candida glycerinogenes, was selected to uncover the underlying mechanism of 2-PE tolerance. We discovered that Hap5 is an essential regulator to 2-PE resistance, and its induction by 2-PE stress occurs at the post-transcriptional level, rather than at the transcriptional level. Under 2-PE stress, Hap5 is activated and imported into the nucleus rapidly. Then, the nuclear Hap5 binds to the glutathione synthetase (gsh2) promoter via CCAAT box, to induce the expression of gsh2 gene. The increased gsh2 expression contributes to enhanced cellular glutathione content, and consequently alleviates ROS accumulation, lipid peroxidation, and cell membrane damage caused by 2-PE toxicity. Specifically, increasing the expression of gsh2 is effective in improving not just 2-PE tolerance (33.7% higher biomass under 29 mM 2-PE), but also 2-PE production (16.2% higher). This study extends our knowledge of 2-PE tolerance mechanism and also provides a promising strategy to improve 2-PE production.
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Affiliation(s)
- Yuqin Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhongyuan Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xinyao Lu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
| | - Hong Zong
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Bin Zhuge
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
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12
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Ruggeberg KG, O'Sullivan P, Kovacs TJ, Dawson K, Capponi VJ, Chan PP, Golobish TD, Gruda MC. Hemoadsorption Improves Survival of Rats Exposed to an Acutely Lethal Dose of Aflatoxin B 1. Sci Rep 2020; 10:799. [PMID: 31964964 PMCID: PMC6972926 DOI: 10.1038/s41598-020-57727-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 01/07/2020] [Indexed: 11/09/2022] Open
Abstract
Mycotoxins, such as aflatoxin B1 (AFB1), pose a serious threat as biological weapons due to their high toxicity, environmental stability, easy accessibility and lack of effective therapeutics. This study investigated if blood purification therapy with CytoSorb (CS) porous polymer beads could improve survival after a lethal aflatoxin dose (LD90). The effective treatment window and potential therapeutic mechanisms were also investigated. Sprague Dawley rats received a lethal dose of AFB1 (0.5-1.0 mg/kg) intravenously and hemoperfusion with a CS or Control device was initiated immediately, or after 30, 90, or 240-minute delays and conducted for 4 hours. The CS device removes AFB1 from circulation and significantly improves survival when initiated within 90 minutes of toxin administration. Treated subjects exhibited improved liver morphology and health scores. Changes in the levels of cytokines, leukocytes and platelets indicate a moderately-severe inflammatory response to acute toxin exposure. Quantitative proteomic analysis showed significant changes in the level of a broad spectrum of plasma proteins including serine protease/endopeptidase inhibitors, coagulation factors, complement proteins, carbonic anhydrases, and redox enzymes that ostensibly contribute to the therapeutic effect. Together, these results suggest that hemoadsorption with CS could be a viable countermeasure against acute mycotoxin exposure.
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Affiliation(s)
| | | | | | - Kathryn Dawson
- CytoSorbents Medical, Monmouth Junction, NJ, United States
| | | | - Phillip P Chan
- CytoSorbents Medical, Monmouth Junction, NJ, United States
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Gok B, Gok G, Koc E, Hamidi N, Alijla A, Asil E, Gok A, Kamaci D, Neselioglu S, Ener K. The change in Thiol-Disulphide Homeostasis levels as an oxidative stress marker after varicocelectomy: Is there a relationship with sperm parameters? Andrologia 2020; 52:e13515. [PMID: 31957921 DOI: 10.1111/and.13515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/14/2019] [Accepted: 12/23/2019] [Indexed: 12/11/2022] Open
Abstract
One of the most important causes of varicocele-related infertility is oxidative stress (OS). One of the markers considered as an indicator of OS is thiol-disulphide homeostasis (TDH). Based on the hypothesis that OS should decrease after varicocelectomy in the light of this information, in our current study, we investigated the relationship between TDH levels and sperm parameters. The data of 56 infertile varicocele men were prospectively analysed. The post-operative total and native thiol levels were significantly higher than those pre-operative total and native thiol levels (477.7 & 436.7 nmol/L, 417.6 & 372.1 nmol/L). Positive correlation was found between total thiol change and change in semen volume (ρ: .277, p: .039), ratio of spermatozoa with normal morphology (ρ: .342, p: .01), progressive (ρ: .334, p: .012) and nonprogressive motility (ρ: .385, p: .003). Positive correlation was also found between native thiol change and semen volume (ρ: .349, p: .008), ratio of spermatozoa with normal morphology (ρ: .362, p: .006), progressive (ρ: .297, p: .026) and nonprogressive motility (ρ: .368, p: .005). Change in the level of TDH was found as positively correlated with progressive and nonprogressive motility change. According to these results, OS decreases with varicocelectomy in infertile patients and TDH can be used as a useful method for measuring OS.
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Affiliation(s)
- Bahri Gok
- Department of Urology, School of Medicine affiliated with of Ankara City Hospital, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Gamze Gok
- Department of Biochemistry, School of Medicine affiliated with of Ankara City Hospital, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Erdem Koc
- Department of Urology, School of Medicine affiliated with of Ankara City Hospital, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Nurullah Hamidi
- Department of Urology, Ankara Abdurrahman Yurtaslan Oncology Hospital, Ankara, Turkey
| | - Amjad Alijla
- Department of Urology, Ankara Medisun Hospital, Ankara, Turkey
| | - Erem Asil
- Department of Urology, Ankara City Hospital, Ankara, Turkey
| | - Alper Gok
- Department of Urology, Ankara Diskapi Training and Research Hospital, Ankara, Turkey
| | - Davut Kamaci
- Department of Urology, Ankara City Hospital, Ankara, Turkey
| | - Salim Neselioglu
- Department of Biochemistry, School of Medicine affiliated with of Ankara City Hospital, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Kemal Ener
- Department of Urology, İstanbul Umraniye Training and Research Hospital, İstanbul, Turkey
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14
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Liu X, Xu J, Xie X, Ma Z, Zheng T, Wu L, Li B, Li W. Heteropoly acid-driven assembly of glutathione into redox-responsive underwater adhesive. Chem Commun (Camb) 2020; 56:11034-11037. [DOI: 10.1039/d0cc03746j] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A glutathione-based underwater adhesive with dynamic attachment/detachment behaviour was achieved via the reversible formation and breakage of disulfide bonds of glutathione.
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Affiliation(s)
- Xiaohuan Liu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Jing Xu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Xiaoming Xie
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Zhiyuan Ma
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Tingting Zheng
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
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15
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Calvaruso M, Pucci G, Musso R, Bravatà V, Cammarata FP, Russo G, Forte GI, Minafra L. Nutraceutical Compounds as Sensitizers for Cancer Treatment in Radiation Therapy. Int J Mol Sci 2019; 20:ijms20215267. [PMID: 31652849 PMCID: PMC6861933 DOI: 10.3390/ijms20215267] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 02/05/2023] Open
Abstract
The improvement of diagnostic techniques and the efficacy of new therapies in clinical practice have allowed cancer patients to reach a higher chance to be cured together with a better quality of life. However, tumors still represent the second leading cause of death worldwide. On the contrary, chemotherapy and radiotherapy (RT) still lack treatment plans which take into account the biological features of tumors and depend on this for their response to treatment. Tumor cells' response to RT is strictly-connected to their radiosensitivity, namely, their ability to resist and to overcome cell damage induced by ionizing radiation (IR). For this reason, radiobiological research is focusing on the ability of chemical compounds to radiosensitize cancer cells so to make them more responsive to IR. In recent years, the interests of researchers have been focused on natural compounds that show antitumoral effects with limited collateral issues. Moreover, nutraceuticals are easy to recover and are thus less expensive. On these bases, several scientific projects have aimed to test also their ability to induce tumor radiosensitization both in vitro and in vivo. The goal of this review is to describe what is known about the role of nutraceuticals in radiotherapy, their use and their potential application.
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Affiliation(s)
- Marco Calvaruso
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Gaia Pucci
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Rosa Musso
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Valentina Bravatà
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Francesco P Cammarata
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Giorgio Russo
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Giusi I Forte
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
| | - Luigi Minafra
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), 90015 Cefalù (PA), Italy.
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16
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Xu L, Xu J, Zhu J, Yao Z, Yu N, Deng W, Wang Y, Lin B. Universal Anticancer Cu(DTC)
2
Discriminates between Thiols and Zinc(II) Thiolates Oxidatively. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luyan Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jialin Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Jingwei Zhu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Zijian Yao
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Na Yu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Wei Deng
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Yu Wang
- Shanghai Synchrotron Radiation FacilityShanghai Advanced Research InstituteChinese Academy of Sciences 239 Zhangheng Road, Pudong New District Shanghai 201204 China
| | - Bo‐Lin Lin
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
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17
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Xu L, Xu J, Zhu J, Yao Z, Yu N, Deng W, Wang Y, Lin B. Universal Anticancer Cu(DTC)
2
Discriminates between Thiols and Zinc(II) Thiolates Oxidatively. Angew Chem Int Ed Engl 2019; 58:6070-6073. [DOI: 10.1002/anie.201814519] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Luyan Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jialin Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Jingwei Zhu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Zijian Yao
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Na Yu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Wei Deng
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Yu Wang
- Shanghai Synchrotron Radiation FacilityShanghai Advanced Research InstituteChinese Academy of Sciences 239 Zhangheng Road, Pudong New District Shanghai 201204 China
| | - Bo‐Lin Lin
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
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18
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Mu K, Yu S, Kitts DD. The Role of Nitric Oxide in Regulating Intestinal Redox Status and Intestinal Epithelial Cell Functionality. Int J Mol Sci 2019; 20:E1755. [PMID: 30970667 PMCID: PMC6479862 DOI: 10.3390/ijms20071755] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 12/11/2022] Open
Abstract
Important functions of intestinal epithelial cells (IECs) include enabling nutrient absorption to occur passively and acting as a defense barrier against potential xenobiotic components and pathogens. A compromise to IEC function can result in the translocation of bacteria, toxins, and allergens that lead to the onset of disease. Thus, the maintenance and optimal function of IECs are critically important to ensure health. Endogenous biosynthesis of nitric oxide (NO) regulates IEC functionality both directly, through free radical activity, and indirectly through cell signaling mechanisms that impact tight junction protein expression. In this paper, we review the current knowledge on factors that regulate inducible nitric oxide synthase (iNOS) and the subsequent roles that NO has on maintaining IECs' intestinal epithelial barrier structure, functions, and associated mechanisms of action. We also summarize important findings on the effects of bioactive dietary food components that interact with NO production and affect downstream intestinal epithelium integrity.
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Affiliation(s)
- Kaiwen Mu
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Shengwu Yu
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - David D Kitts
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
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19
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Zhu Z, Umehara T, Okazaki T, Goto M, Fujita Y, Hoque SAM, Kawai T, Zeng W, Shimada M. Gene Expression and Protein Synthesis in Mitochondria Enhance the Duration of High-Speed Linear Motility in Boar Sperm. Front Physiol 2019; 10:252. [PMID: 30914972 PMCID: PMC6422996 DOI: 10.3389/fphys.2019.00252] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 02/25/2019] [Indexed: 11/13/2022] Open
Abstract
Sperm motility patterns are continuously changed after ejaculation to fertilization in the female tract. Hyperactivated motility is induced with high glucose medium in vitro or the oviduct fluids in vivo, whereas sperm maintain linear motility in the seminal plasma or the uterine fluids containing low glucose. Therefore, it is estimated that sperm motility patterns are dependent on the energy sources, and the mitochondrial oxidative phosphorylation is activated to produce ATP in low glucose condition. To elucidate these hypotheses, boar sperm was incubated in different energy conditions with the transcription and translation inhibitors in vitro. Sperm motility parameters, mitochondrial activity, ATP level, gene expression and protein synthesis were analyzed. Sperm progressive motility and straight-line velocity were significantly increased with decreasing glucose level in the incubation medium. Moreover, the mitochondrial protein turnover meaning transcription and translation from mitochondrial genome in sperm is activated during incubation. Incubation of sperm with mitochondrial translation inhibitor (D-chloramphenicol) suppressed mitochondrial protein synthesis, mitochondrial activity and ATP level in sperm and consequently reduced the linear motility speed, but not the motility. Thus, it is revealed that the mitochondrial central dogma is active in sperm, and the high-speed linear motility is induced in low glucose condition via activating the mitochondrial activity for ATP generation.
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Affiliation(s)
- Zhendong Zhu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
| | - Takashi Umehara
- Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
| | - Tetsuji Okazaki
- Livestock Research Institute, Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Oita, Japan
| | - Masaaki Goto
- Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan.,Livestock Research Institute, Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Oita, Japan
| | | | - S A Masudul Hoque
- Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan.,Department of Animal Breeding of Genetics, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Tomoko Kawai
- Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
| | - Wenxian Zeng
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Masayuki Shimada
- Laboratory of Reproductive Endocrinology, Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan
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20
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Neelofar K, Arif Z, Ahmad J, Alam K. Inhibitory effect of silibinin on Amadori-albumin in diabetes mellitus: A multi-spectroscopic and biochemical approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 209:217-222. [PMID: 30399482 DOI: 10.1016/j.saa.2018.10.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/17/2018] [Accepted: 10/25/2018] [Indexed: 06/08/2023]
Abstract
Due to increased understanding of the damaging effects of glycation process, it is highly desirable to manage this process effectively either by prevention or by managing the consequences of glycation preferentially at early stage. The use of potential naturally occurring compounds as anti-glycating agents may provide an effective approach to control the development and progression of diabetic associated complications. In the present study, human serum albumin (albumin) was co-incubated with glucose and different concentrations of silibinin. Silibinin was demonstrated to possess anti-glycation activity. We found that silibinin inhibits glucoseinduced glycation at an early stage. We analyzed the effect of silibinin on albumin structure and its biochemical properties at early stage of glycation through various biophysical and biochemical techniques. Nitro blue tertazolium assay results showed that fructosamine formation was reduced in the presence of silibinin. UV-visible spectra results showed decrease in the absorbance with increasing concentrations of silibinin towards native albumin absorbance. Fluorescence results showed that the intensity was increased with increasing the silibinin concentrations as compared to Amadori-albumin. In addition, Far-UV CD spectra demonstrated some restoration of α-helicity when albumin was incubated with glucose in the presence of silibinin. Moreover, silibinin caused significant reduction in carbonyl contents with concomitant increase in free thiol, lysine and arginine residues. The anti-glycation activity of silibinin was concentration-dependent. From all the observations, we can conclude that silibinin might be acting as an obstacle in the binding of glucose with albumin and thus preventing the glycation induced changes in albumin. Silibinin may be effective in delaying glycation mediated pathologies in diabetic individuals.
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Affiliation(s)
- Km Neelofar
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Zarina Arif
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Jamal Ahmad
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Khursheed Alam
- Department of Biochemistry, J.N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India.
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21
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Tabeshpour J, Mehri S, Abnous K, Hosseinzadeh H. Neuroprotective Effects of Thymoquinone in Acrylamide-Induced Peripheral Nervous System Toxicity Through MAPKinase and Apoptosis Pathways in Rat. Neurochem Res 2019; 44:1101-1112. [PMID: 30725239 DOI: 10.1007/s11064-019-02741-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/16/2022]
Abstract
Acrylamide (ACR) is extensively used in industrial areas and has been demonstrated to induce neurotoxicity via oxidative stress and apoptosis. In this study, we assessed the probable protective effects of thymoquinone (TQ), an active constituent of Nigella sativa, against ACR-induced neurotoxicity. ACR (50 mg/kg, i.p., for 11 days) and TQ (2.5, 5 and 10 mg/kg, i.p., for 11 days) were administered to rats. On 12th day, gait score was examined and rats were sacrificed. Malondialdehyde (MDA) and reduced glutathione (GSH) contents were determined in sciatic nerve. Furthermore, western blotting was conducted. The exposure of rats to ACR caused severe gait disabilities. The MDA and GSH contents were increased and decreased, respectively. ACR decreased P-ERK/ERK ratio and myelin basic protein (MBP) content, but significantly increased P-JNK/JNK, P-P38/P38, Bax/Bcl-2 ratios and caspase 3 and 9 levels. Concurrently administration of TQ (5 and 10 mg/kg) with ACR, prevented gait abnormalities and meaningfully reduced MDA and elevated the GSH contents. Furthermore, TQ (5 mg/kg) elevated the P-ERK/ERK ratio and MBP content while reduced the P-JNK/JNK, P-P38/P38 ratios and apoptotic markers. MAP kinase and apoptosis signaling pathways were involved in ACR-induced neurotoxicity in rat sciatic nerve and TQ significantly reduced ACR neurotoxicity. TQ afforded neuroprotection, in part, due to its anti-oxidative stress and anti-apoptotic mechanisms.
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Affiliation(s)
- Jamshid Tabeshpour
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Soghra Mehri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran. .,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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22
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Mahmoud ME, Hassan SSM, Kamel AH, Elserw MIA. Fast microwave-assisted sorption of heavy metals on the surface of nanosilica-functionalized-glycine and reduced glutathione. BIORESOURCE TECHNOLOGY 2018; 264:228-237. [PMID: 29807330 DOI: 10.1016/j.biortech.2018.05.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/10/2018] [Accepted: 05/12/2018] [Indexed: 06/08/2023]
Abstract
Two eco-friendly nanosorbents have been designed and synthesized via surface crosslinking of nanosilica (N-Si) with glycine (Gly) and reduced glutathione (GSH) to produce (N-Si-Gly) and (N-Si-Glu) using crosslinking reagent and sonochemical reactions, respectively. An investigation was performed to search selectivity of nanosorbents via microwave-assisted removal of Ni(II)/Cu(II)/Cd(II)/Pb(II) to affirm green and fast technique. The microwave-assisted removal values of Ni(II), Cu(II), Cd(II) and Pb(II) were observed at 850, 2100, 3500 and 2150 μmol g-1, respectively utilizing 10 mg of (N-Si-Glu) and 25.0 s heating, while those corresponded to 750, 1800, 2500 and 1850 μmol g-1, respectively by using (N-Si-Gly). The microwave-assisted removal processes were more fitted to Freundlich compared to Langmuir isotherm except in case of Pb(II). The high percent removal of Cd(II) and Pb(II) ions exceed 95% from the second run in real wastewater samples indicating the efficiency of N-Si-Glu in the uptake of these metals utilizing microwave-assisted sorption technique.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt.
| | - Saad S M Hassan
- Faculty of Science, Chemistry Department, Ain Shams University, P.O. Box 80205, Cairo, Egypt
| | - Ayman H Kamel
- Faculty of Science, Chemistry Department, Ain Shams University, P.O. Box 80205, Cairo, Egypt
| | - Mahmoud I A Elserw
- Faculty of Science, Chemistry Department, Ain Shams University, P.O. Box 80205, Cairo, Egypt
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23
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Morroni F, Sita G, Graziosi A, Turrini E, Fimognari C, Tarozzi A, Hrelia P. Protective Effects of 6-(Methylsulfinyl)hexyl Isothiocyanate on Aβ 1-42-Induced Cognitive Deficit, Oxidative Stress, Inflammation, and Apoptosis in Mice. Int J Mol Sci 2018; 19:E2083. [PMID: 30021941 PMCID: PMC6073905 DOI: 10.3390/ijms19072083] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/10/2018] [Accepted: 07/16/2018] [Indexed: 01/12/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia among older people. Although soluble amyloid species are recognized triggers of the disease, no therapeutic approach is able to stop it. 6-(Methylsulfinyl)hexyl isothiocyanate (6-MSITC) is a major bioactive compound in Wasabia japonica, which is a typical Japanese pungent spice. Recently, in vivo and in vitro studies demonstrated that 6-MSITC has several biological properties. The aim of the present study was to investigate the neuroprotective activity of 6-MSITC in a murine AD model, induced by intracerebroventricular injection of β-amyloid oligomers (Aβ1-42O). The treatment with 6-MSITC started 1 h after the surgery for the next 10 days. Behavioral analysis showed that 6-MSITC ameliorated Aβ1-42O-induced memory impairments. The decrease of glutathione levels and increase of reactive oxygen species in hippocampal tissues following Aβ1-42O injection were reduced by 6-MSITC. Moreover, activation of caspases, increase of inflammatory factors, and phosphorylation of ERK and GSK3 were inhibited by 6-MSITC. These results highlighted an interesting neuroprotective activity of 6-MSITC, which was able to restore a physiological oxidative status, interfere positively with Nrf2-pathway, decrease apoptosis and neuroinflammation and contribute to behavioral recovery. Taken together, these findings demonstrated that 6-MSITC could be a promising complement for AD therapy.
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Affiliation(s)
- Fabiana Morroni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, via Irnerio 48, 40126 Bologna, Italy.
| | - Giulia Sita
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, via Irnerio 48, 40126 Bologna, Italy.
| | - Agnese Graziosi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, via Irnerio 48, 40126 Bologna, Italy.
| | - Eleonora Turrini
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso d'Augusto, 237, 47900 Rimini, Italy.
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso d'Augusto, 237, 47900 Rimini, Italy.
| | - Andrea Tarozzi
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso d'Augusto, 237, 47900 Rimini, Italy.
| | - Patrizia Hrelia
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, via Irnerio 48, 40126 Bologna, Italy.
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Gul M, Bugday MS, Erel O. Thiol-disulphide homoeostasis as an oxidative stress marker in men with varicocele. Andrologia 2018; 50:e12982. [PMID: 29411889 DOI: 10.1111/and.12982] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2017] [Indexed: 11/29/2022] Open
Abstract
Oxidative stress is the most common factor leading to infertility in men with varicocele. Reactive oxygen species and other markers of oxidative stress are measured to predict the extent of oxidative stress. Thiol groups are important antioxidants and essential molecules protecting organism against the harmful effects of reactive oxygen species. Thiol-disulphide homoeostasis is a unique, easy and new method to demonstrate oxidative stress. The aim of this study was to determine thiol-disulphide homoeostasis as an oxidative stress marker in infertile men with varicocele. The hormonal profile and parameters of thiol-disulphide homoeostasis were studied in 46 infertile men with varicocele, 70 fertile men with varicocele and 37 fertile controls. Infertile men with varicocele had significantly higher disulphide concentrations and disulphide/native thiol, disulphide/total thiol and native/total thiol ratios than those of fertile men with varicocele and fertile controls. According to these results, the blood plasma of patients with varicocele contains excessive oxidative stress, even in men with normospermia, and therefore, thiol-disulphide homoeostasis may be useful as an oxidative stress marker in men with varicocele.
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Affiliation(s)
- M Gul
- Department of Urology, Van Training and Research Hospital, University of Ministry of Health, Van, Turkey
| | - M S Bugday
- Department of Urology, Van Training and Research Hospital, University of Ministry of Health, Van, Turkey
| | - O Erel
- Department of Clinical Biochemistry, Yıldırım Beyazıt University School of Medicine, Ankara, Turkey
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Yang F, Yi M, Liu Y, Wang Q, Hu Y, Deng H. Glutaredoxin-1 Silencing Induces Cell Senescence via p53/p21/p16 Signaling Axis. J Proteome Res 2018; 17:1091-1100. [DOI: 10.1021/acs.jproteome.7b00761] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fan Yang
- MOE
Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Meiqi Yi
- MOE
Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yan Liu
- MOE
Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Qingtao Wang
- Beijing Chaoyang Hospital Affiliated to Capital Medical University, Chaoyang District, Beijing 100020, China
| | - Yadong Hu
- MOE
Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
- Chengdu Institute of Biology, Chinese Academy of Sciences, Renmin South Road, Chengdu 610000, China
| | - Haiteng Deng
- MOE
Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
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Morgan MT, Nguyen LAH, Hancock HL, Fahrni CJ. Glutathione limits aquacopper(I) to sub-femtomolar concentrations through cooperative assembly of a tetranuclear cluster. J Biol Chem 2017; 292:21558-21567. [PMID: 29101230 DOI: 10.1074/jbc.m117.817452] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/27/2017] [Indexed: 11/06/2022] Open
Abstract
The tripeptide glutathione (GSH) is a crucial intracellular reductant and radical scavenger, but it may also coordinate the soft Cu(I) cation and thereby yield pro-oxidant species. The GSH-Cu(I) interaction is thus a key consideration for both redox and copper homeostasis in cells. However, even after nearly four decades of investigation, the nature and stability of the GSH-Cu(I) complexes formed under biologically relevant conditions remain controversial. Here, we revealed the unexpected predominance of a tetranuclear [Cu4(GS)6] cluster that is sufficiently stable to limit the effective free aquacopper(I) concentration to the sub-femtomolar regime. Combined spectrophotometric-potentiometric titrations at biologically realistic GSH/Cu(I) ratios, enabled by our recently developed Cu(I) affinity standards and corroborated by low-temperature phosphorescence studies, established cooperative assembly of [Cu4(GS)6] as the dominant species over a wide pH range, from 5.5 to 7.5. Our robust model for the glutathione-Cu(I) equilibrium system sets a firm upper limit on the thermodynamic availability of intracellular copper that is 3 orders of magnitude lower than previously estimated. Taking into account their ability to catalyze the production of deleterious superoxide, the formation of Cu(I)-glutathione complexes might be avoided under normal physiological conditions. The actual intracellular Cu(I) availability may thus be regulated a further 3 orders of magnitude below the GSH/Cu(I) affinity limit, consistent with the most recent affinity determinations of Cu(I) chaperones.
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Affiliation(s)
- M Thomas Morgan
- From the School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - Lily Anh H Nguyen
- From the School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - Haylie L Hancock
- From the School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - Christoph J Fahrni
- From the School of Chemistry and Biochemistry, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
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Cao X, Li J, Xue H, Wang S, Zhao W, Du Z, Yang Y, Yue Z. Effect of vitrification on meiotic maturation, mitochondrial distribution and glutathione synthesis in immature silver fox cumulus oocyte complexes. Theriogenology 2017; 91:104-111. [DOI: 10.1016/j.theriogenology.2016.12.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 12/22/2016] [Accepted: 12/29/2016] [Indexed: 10/20/2022]
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Prognostic impact of pretherapeutic gamma-glutamyltransferase on patients with nasopharyngeal carcinoma. PLoS One 2017; 12:e0172345. [PMID: 28241022 PMCID: PMC5328260 DOI: 10.1371/journal.pone.0172345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 02/03/2017] [Indexed: 01/01/2023] Open
Abstract
Background Gamma-glutamyltransferase (GGT) is a membrane-bound enzyme involved in the metabolism of glutathione. Studies suggested that GGT played an important role in the tumor development, progression, invasion and drug resistance and prognosis. The association between GGT and prognosis of patients with nasopharyngeal carcinoma (NPC) was unknown. This study was conducted to investigate the association of pretherapeutic serum level of GGT with clinical-pathological parameters and survival in patients with NPC. Methods Two hundred and twenty-two patients with NPC were recruited in this study and were stratified into two GGT risk groups (≤ 34.5 U/L, > 34.5 U/L). The association of pretherapeutic serum GGT levels with clinical–pathological parameters was examined. Univariate and multivariate survival analyses were performed. Findings The pretherapeutic serum level of GGT was not associated with gender, age, pathology, T stage, N stage, TNM stage, chemotherapy or radiotherapy in patients with NPC. Patients in the high-risk GGT group had a poorer survival than the low-risk GGT group (3-year overall survival, 74.2% vs. 50.2%, P = 0.001; 3-year progression-free survival, 76.4% vs. 47.1%, P < 0.001; 3-year loco-regional relapse-free survival, 76.4% vs. 51.3%, P < 0.001; 3-year distant metastasis-free survival, 89.5% vs. 66.4%, P < 0.001). Multivariate analysis suggested that patients in the high-risk GGT group had 2.117 (95% confidence interval [CI], 1.225 ∼ 3.659, P = 0.007) times the risk of death, 2.836 (95% CI, 1.765 ∼ 4.557, P < 0.001) times the risk of progression, 2.551 (95% CI, 1.573 ∼ 4.138, P < 0.001) times the risk of relapse, and 3.331 (95% CI, 1.676 ∼ 6.622, P < 0.001) times the risk of metastasis compared with those in the low-risk GGT group. Conclusion The pretherapeutic serum level of GGT might serve as a novel independent prognostic factor for overall-survival, progression-free survival, loco-regional relapse-free survival and distant metastasis-free survival in patients with NPC.
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Rosenson-Schloss RS, Chnari E, Brieva TA, Dang A, Moghe PV. Glutathione Preconditioning Attenuates Ac-LDL–lnduced Macrophage Apoptosis via Protein Kinase C–Dependent Ac-LDL Trafficking. Exp Biol Med (Maywood) 2016; 230:40-8. [PMID: 15618124 DOI: 10.1177/153537020523000105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Oxidized low-density lipoprotein (ox-LDL) incorporation into intlmally resident vascular cells via scavenger receptors marks one of the early steps in atherosclerosis. Cellular apoptotic damage results from two major serial intracellular events: the binding and scavenger receptor-mediated uptake of oxldizable lipoproteins and the intracellular oxidative responses of accumulated lipoproteins. Most molecular approaches to prevent apoptotic damage have focused on singular events within the cascade of lipoprotein trafficking. To identify a multifocal strategy against LDL-induced apoptosis, we evaluated the role of cellular preconditioning by glutathione-ethyl ester (GSH-Et), a native redox regulator, in the prevention of the uptake and apoptotic effects of an oxldizable scavenger receptor-specific ligand, acetylated low-density lipoprotein (Ac-LDL). Our results indicate that GSH-Et–mediated protein kinase C (PKC) pathway modulation regulates Ac-LDL binding and incorporation into GSH-Et preconditioned cells and subsequently delays reactive oxygen intermediate generation and apoptotic conversion. The GSH-Et protective effects on apoptosis and Ac-LDL binding were reversed by calphostin C, a PKC inhibitor, and were accompanied by an increase in PKC phosphorylation. However, the rate of reactive oxygen intermediate accumulation was not increased following calphostin C treatment, suggesting that GSH-Et may play an important nonreactive oxygen-intermediate–based protective role in regulating apoptotic dynamics. Overall, we report on the novel role for GSH-Et preconditioning as a molecular strategy to limit lipoprotein entry Into the cells, which presents a proactive modality to prevent cellular apoptosis in contrast with the prevalent antioxidant approaches that treat damage retroactively.
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Affiliation(s)
- Rene S Rosenson-Schloss
- Department of Chemical and Biochemical Engineering, Department of Biomedical Engineering, Rutgers University, 98 Brett Rd., Piscataway, NJ 08854-8058, USA
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Du Y, Esfandi R, Willmore WG, Tsopmo A. Antioxidant Activity of Oat Proteins Derived Peptides in Stressed Hepatic HepG2 Cells. Antioxidants (Basel) 2016; 5:antiox5040039. [PMID: 27775607 PMCID: PMC5187537 DOI: 10.3390/antiox5040039] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/14/2016] [Accepted: 10/19/2016] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to determine, for the first time, antioxidant activities of seven peptides (P1–P7) derived from hydrolysis of oat proteins in a cellular model. In the oxygen radical absorbance capacity (ORAC) assay, it was found that P2 had the highest radical scavenging activity (0.67 ± 0.02 µM Trolox equivalent (TE)/µM peptide) followed by P5, P3, P6, P4, P1, and P7 whose activities were between 0.14–0.61 µM TE/µM). In the hepatic HepG2 cells, none of the peptides was cytotoxic at 20–300 µM. In addition to having the highest ORAC value, P2 was also the most protective (29% increase in cell viability) against 2,2′-azobis(2-methylpropionamidine) dihydrochloride -induced oxidative stress. P1, P6, and P7 protected at a lesser extent, with an 8%–21% increase viability of cells. The protection of cells was attributed to several factors including reduced production of intracellular reactive oxygen species, increased cellular glutathione, and increased activities of three main endogenous antioxidant enzymes.
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Affiliation(s)
- Yichen Du
- Food Science and Nutrition, Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada.
| | - Ramak Esfandi
- Food Science and Nutrition, Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada.
| | - William G Willmore
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, ON K1S 5B6, Canada.
| | - Apollinaire Tsopmo
- Food Science and Nutrition, Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada.
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Gul F, Muderris T, Yalciner G, Mise HI, Canan Y, Babademez MA, Erel O. A novel method for evaluation of oxidative stress in children with OSA. Int J Pediatr Otorhinolaryngol 2016; 89:76-80. [PMID: 27619033 DOI: 10.1016/j.ijporl.2016.07.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 07/24/2016] [Accepted: 07/26/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To evaluate the role of adenotonsillar hypertrophy and the outcomes of adenotonsillectomy (AT) on oxidative stress for obstructive sleep apnea (OSA) in children using a new method; thiol/disulfide homeostasis. METHODS The study is consisted of 45 children with OSA and 38 healthy control subjects with similar age and sex. Children 3-12 years of age with OSA, defined as having an apnea/hypopnea index (AHI) of 5 or more in an overnight polysomnography, underwent adenotonsillectomy. OSA was classified as mild (1 ≤ AHI<10), moderate (10 ≤ AHI<20) or severe (AHI≥20). Venous blood samples were taken preoperatively and one month after surgery. The blood levels of thiol/disulfide homeostasis were assessed and compared between patients and control group, before and after adenotonsillectomy. RESULTS Body mass index (BMI), mean age and gender distribution were similar between the study and control groups. Statistically significant higher disulfide levels and ratios were found in the study group compared to the control group; in patients with moderate to severe OSA compared to mild OSA; in the preoperative period compared to postoperative period (p < 0.001, for all). CONCLUSIONS The current study provides preliminary evidence between oxidative stress and OSA in children with adenotonsillar. Adenotonsillectomy for OSA may result in a dramatic improvement in oxidative stress as measured by thiol/disulfide homeostasis.
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Affiliation(s)
- Fatih Gul
- Bitlis Tatvan State Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Bitlis, Turkey.
| | - Togay Muderris
- FEBORL-HNS, Ataturk Training and Research Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Ankara, Turkey.
| | - Gokhan Yalciner
- Ataturk Training and Research Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Ankara, Turkey.
| | - Halil Ibrahim Mise
- Ataturk Training and Research Hospital, Department of Otorhinolaryngology, Head and Neck Surgery, Ankara, Turkey.
| | - Yagmur Canan
- Yıldırım Beyazıt University School of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ankara, Turkey.
| | - Mehmet Ali Babademez
- Yıldırım Beyazıt University School of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ankara, Turkey
| | - Ozcan Erel
- Yıldırım Beyazıt University School of Medicine, Department of Clinical Biochemistry, Ankara, Turkey
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Burnham EL, McNally A, Gaydos J, Brown LAS. The Relationship Between Airway Antioxidant Levels, Alcohol Use Disorders, and Cigarette Smoking. Alcohol Clin Exp Res 2016; 40:2147-2160. [PMID: 27627733 DOI: 10.1111/acer.13201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 07/27/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Alcohol use disorders (AUDs) and cigarette smoking are associated with pulmonary oxidative stress, likely related to antioxidant depletion. Pulmonary oxidative stress may adversely affect innate immunity, leading to increased pneumonia susceptibility and severity, including development of the acute respiratory distress syndrome. In people with AUDs, most of whom smoke, antioxidant therapy can potentially restore immune cell function and attenuate pneumonia development. Challenges to human investigations of antioxidant therapies include an inability to identify pulmonary oxidative stress noninvasively and the optimal route to deliver pulmonary antioxidants. We sought to determine whether bronchoalveolar lavage (BAL) measures of thiol antioxidants from a 50-ml upper airway aliquot approximated those in the alveolar space and to determine whether AUDs and/or smoking affected these relationships. METHODS Healthy human subjects with and without AUDs, including smokers and nonsmokers, underwent BAL. Samples obtained after the first 50-ml normal saline aliquot were analyzed as representing bronchial airways; subsequent 50-ml aliquots were analyzed as representative of the alveolar space. Reduced and oxidized (GSSG) glutathione, cysteine (Cys), and its oxidized species, cystine, along with mixed disulfides (MDs) were quantified using high-performance liquid chromatography. The percent of total thiols present in their oxidized forms, and thiol redox potentials, were calculated. RESULTS Positive correlations between upper and lower BAL fluid thiol species were observed that were most robust for GSSG (ρ = 0.85), Cys (ρ = 0.83), and MDs (ρ = 0.69), but poor for thiol redox potential measures. In contrast to nonsmokers (either with or without AUDs), in subjects with AUDs who smoked, upper BAL fluid %GSSG, Cys, and MD measures were relatively increased compared to lower. CONCLUSIONS A small volume BAL procedure may be suitable to assess intrapulmonary oxidative stress related to thiol depletion. Factors including AUDs and smoking may disproportionately increase upper airways oxidative stress that could be relevant for therapeutic interventions.
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Affiliation(s)
- Ellen L Burnham
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado.
| | - Alicia McNally
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Jeanette Gaydos
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Lou Ann S Brown
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia
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Choudhry QN, Kim MJ, Kim TG, Pan JH, Kim JH, Park SJ, Lee JH, Kim YJ. Saponin-Based Nanoemulsification Improves the Antioxidant Properties of Vitamin A and E in AML-12 Cells. Int J Mol Sci 2016; 17:E1406. [PMID: 27571071 PMCID: PMC5037686 DOI: 10.3390/ijms17091406] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 06/27/2016] [Accepted: 08/22/2016] [Indexed: 12/16/2022] Open
Abstract
Our work aimed to investigate the protective effects of saponin-based nanoemulsions of vitamin A and E against oxidative stress-induced cellular damage in AML-12 cells. Saponin nanoemulsions of vitamin A (SAN) and vitamin E (SEN) were prepared by high-pressure homogenization and characterized in terms of size, zeta potential, and polydispersity index. SEN and SAN protect AML-12 cells against oxidative stress-induced cellular damage more efficiently via scavenging reactive oxygen species (ROS), and reducing DNA damage, protein carbonylation, and lipid peroxidation. These results provide valuable information for the development of nanoemulsion-based delivery systems that would improve the antioxidant properties of vitamin A and E.
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Affiliation(s)
- Qaisra Naheed Choudhry
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Mi Jeong Kim
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Tae Gyun Kim
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Jeong Hoon Pan
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Jun Ho Kim
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Sung Jin Park
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Jin Hyup Lee
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
| | - Young Jun Kim
- Department of Food and Biotechnology, Korea University, 2511 Sejongro, Jochiwon, Sejong 339-700, Korea.
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Lindahl PA, Moore MJ. Labile Low-Molecular-Mass Metal Complexes in Mitochondria: Trials and Tribulations of a Burgeoning Field. Biochemistry 2016; 55:4140-53. [PMID: 27433847 DOI: 10.1021/acs.biochem.6b00216] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Iron, copper, zinc, manganese, cobalt, and molybdenum play important roles in mitochondrial biochemistry, serving to help catalyze reactions in numerous metalloenzymes. These metals are also found in labile "pools" within mitochondria. Although the composition and cellular function of these pools are largely unknown, they are thought to be comprised of nonproteinaceous low-molecular-mass (LMM) metal complexes. Many problems must be solved before these pools can be fully defined, especially problems stemming from the lability of such complexes. This lability arises from inherently weak coordinate bonds between ligands and metals. This is an advantage for catalysis and trafficking, but it makes characterization difficult. The most popular strategy for investigating such pools is to detect them using chelator probes with fluorescent properties that change upon metal coordination. Characterization is limited because of the inevitable destruction of the complexes during their detection. Moreover, probes likely react with more than one type of metal complex, confusing analyses. An alternative approach is to use liquid chromatography (LC) coupled with inductively coupled plasma mass spectrometry (ICP-MS). With help from a previous lab member, the authors recently developed an LC-ICP-MS approach to analyze LMM extracts from yeast and mammalian mitochondria. They detected several metal complexes, including Fe580, Fe1100, Fe1500, Cu5000, Zn1200, Zn1500, Mn1100, Mn2000, Co1200, Co1500, and Mo780 (numbers refer to approximate masses in daltons). Many of these may be used to metalate apo-metalloproteins as they fold inside the organelle. The LC-based approach also has challenges, e.g., in distinguishing artifactual metal complexes from endogenous ones, due to the fact that cells must be disrupted to form extracts before they are passed through chromatography columns prior to analysis. Ultimately, both approaches will be needed to characterize these intriguing complexes and to elucidate their roles in mitochondrial biochemistry.
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Affiliation(s)
- Paul A Lindahl
- Department of Chemistry, Texas A&M University , College Station, Texas 77843-3255, United States.,Department of Biochemistry and Biophysics, Texas A&M University , College Station, Texas 77843-2128, United States
| | - Michael J Moore
- Department of Chemistry, Texas A&M University , College Station, Texas 77843-3255, United States
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Inhibition of Glutathione Biosynthesis Sensitizes Plasmodium berghei to Antifolates. Antimicrob Agents Chemother 2016; 60:3057-64. [PMID: 26953195 DOI: 10.1128/aac.01836-15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 03/03/2016] [Indexed: 01/13/2023] Open
Abstract
Glutathione plays a central role in maintaining cellular redox homeostasis, and modulations to this status may affect malaria parasite sensitivity to certain types of antimalarials. In this study, we demonstrate that inhibition of glutathione biosynthesis in the Plasmodium berghei ANKA strain through disruption of the γ-glutamylcysteine synthetase (γ-GCS) gene, which encodes the first and rate-limiting enzyme in the glutathione biosynthetic pathway, significantly sensitizes parasites in vivo to pyrimethamine and sulfadoxine, but not to chloroquine, artesunate, or primaquine, compared with control parasites containing the same pyrimethamine-resistant marker cassette. Treatment of mice infected with an antifolate-resistant P. berghei control line with a γ-GCS inhibitor, buthionine sulfoximine, could partially abrogate pyrimethamine and sulfadoxine resistance. The role of glutathione in modulating the malaria parasite's response to antifolates suggests that development of specific inhibitors against Plasmodium γ-GCS may offer a new approach to counter Plasmodium antifolate resistance.
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Surai P, Fisinin V. 25. Antioxidant system regulation: from vitamins to vitagenes. HANDBOOK OF CHOLESTEROL 2016. [DOI: 10.3920/978-90-8686-821-6_25] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- P.F. Surai
- Feed-Food Ltd., 53 Dongola Road, KA7 3BN Ayr, UK
- Trakia University, Studentski Grad, Stara Zagora 6000, Bulgaria
- Szent Istvan University, Godollo 2103, Hungary
- Sumy National Agrarian University, Kirova Street 160, Sumy 40021, Ukraine
- Odessa National Academy of Food Technologies, Kanatna Street 112, Odessa 65000, Ukraine
| | - V.I. Fisinin
- All Russian Institute of Poultry Husbandry, Ptitzegradskaya Street 10, Sergiev Posad, Moscow region 141311, Russia
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Eizadi M, Sohaily S, Khorshidi D, Samarikhalaj H. Effect of Aerobic Training Program on Serum C-reactive Protein Levels. AVICENNA JOURNAL OF MEDICAL BIOCHEMISTRY 2016. [DOI: 10.17795/ajmb-33294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Sahu CR. Mechanisms Involved in Toxicity of Liver Caused by Piroxicam in Mice and Protective Effects of Leaf Extract of Hibiscus rosa-sinensis L. CLINICAL MEDICINE INSIGHTS. ARTHRITIS AND MUSCULOSKELETAL DISORDERS 2016; 9:9-13. [PMID: 26819562 PMCID: PMC4720181 DOI: 10.4137/cmamd.s29463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/01/2015] [Accepted: 12/06/2015] [Indexed: 11/19/2022]
Abstract
Piroxicam is one of the important therapeutic nonsteroidal anti-inflammatory class of drugs used mainly to suppress pain and inflammation in arthritis and other musculoskeletal disorders. Besides being anti-inflammatory, these drugs are analgesic and antipyretic often used for the relief of nonspecific fever condition. Recently, piroxicam has also gained attention as an effective therapy for tumors, colorectal, and invasive bladder cancers. The objective of the current study is to evaluate the protective effects of the alcoholic leaf extract of Hibiscus rosa-sinensis (AEH), Malvaceae, against piroxicam-induced toxicity in mice. Sixty adult Swiss albino mice (Mus musculus) were divided into four groups (n = 10), which included a control group, a group treated orally with AEH (30 mg kg(-1) b.w.) for 15 days, a group treated orally with piroxicam (6.6 mg kg(-1) b.w.) for 15 days, and another group treated orally with piroxicam and AEH for 15 days. The results indicated that treatment with piroxicam alone resulted in a significant increase in the activities of serum marker enzymes, namely, aspartate transaminase, alanine transaminase, and alkaline phosphatase with profound hepatic lipid peroxidation as evidenced by a marked increment in the level of thoibarbituric acid reactive substances along with a distinct diminution in reduced glutathoine content and various antioxidant enzymes such as superoxide dismutase, catalase, and glutathione peroxidase in the liver. However, treatment with AEH during piroxicam treatment retrieved or partially antagonized the effects induced by piroxicam toward the normal values of controls. Histopathological observations also corroborate with the above findings. It can be concluded that AEH exhibited a protective action against piroxicam toxicity and effective in combating oxidative stress-induced hepatic damage.
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Affiliation(s)
- C. R. Sahu
- Department of Zoology, University of Kalyani, Kalyani, India
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Ghosh M, Gupta M, Kumar R, Kumar S, Balhara AK, Singh I. Relation between antioxidant status and postpartum anestrous condition in Murrah buffalo. Vet World 2015; 8:1163-6. [PMID: 27047011 PMCID: PMC4774649 DOI: 10.14202/vetworld.2015.1163-1166] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 08/19/2015] [Accepted: 08/26/2015] [Indexed: 11/25/2022] Open
Abstract
Aim: Objective of the present study was to investigate the relation between antioxidant status and postpartum anestrous (PPA) condition in Murrah buffalo. Materials and Methods: Jugular blood samples were collected from two different groups of Murrah buffaloes each group consisting of 20 animals. Group I was of PPA and Group II were of cyclic buffaloes. The animals selected were examined for confirmation for cyclic and acyclic condition (>120 days) after calving by routine transrectal ultrasonography. Heard record was also used for cross confirmation. Results: The analysis of antioxidants in plasma and hemolysates revealed that the levels of vitamin E, β-carotene and reduced glutathione in plasma and superoxide dismutase (SOD) in hemolysate were significantly higher in cyclic animals than PPA animals. The levels of vitamin C, SOD and glutathione peroxidase in plasma did not show any significant difference among the two groups studied. The low antioxidant level in affected animals may predispose them toward PPA condition. Conclusion: Stress imposed by pregnancy and lactation affected the reproductive performance in PPA animals which might be inherently more susceptible to these stressors than those who were normal cyclic as all the animals were maintained under similar feeding and management practices.
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Affiliation(s)
- Mayukh Ghosh
- Department of Veterinary Physiology and Biochemistry, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar - 125 004, Haryana, India
| | - Meenakshi Gupta
- Department of Veterinary Physiology and Biochemistry, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar - 125 004, Haryana, India
| | - Rajesh Kumar
- Department of Veterinary Physiology, Veterinary College, Pookode, Lakkidi - 673 576, Kerala, India
| | - Sunil Kumar
- Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - A K Balhara
- Division of Animal Physiology and Reproduction, Central Institute for Research on Buffalo, Hisar - 125 001, Haryana, India
| | - Inderjeet Singh
- Division of Animal Physiology and Reproduction, Central Institute for Research on Buffalo, Hisar - 125 001, Haryana, India
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Induction of apoptosis and oxidative stress in estrogen receptor-negative breast cancer, MDA-MB231 cells, by ethanolic mango seed extract. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:45. [PMID: 25881293 PMCID: PMC4369801 DOI: 10.1186/s12906-015-0575-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 02/21/2015] [Indexed: 02/07/2023]
Abstract
Background In this study, the effect of mango kernel extract in the induction of apoptosis of the breast cancer (MDA-MB-231) cell line was examined. This is an attempt to discover alternatives to current therapeutic regimes in the treatment of breast cancers. Methods The pro-apoptotic markers, Bax, cytochrome c, caspases-. -8 and −9, and anti-apoptotic markers, Bcl-2, p53 and glutathione were determined in MDA-MB231 cells treated for 12 and 24 h with mango kernel extract. Results The results showed that the extract produced a time- and dose-dependent increases in pro-apoptotic proteins and oxidative stress markers with a corresponding decrease in anti-apoptotic markers. Conclusions Based on the findings, mango kernel extract modulates redox balance in MDA-MB-231 breast cancer cells with a tendency for apoptotic cell death. The changes observed in this study may collectively underlie the basis for the cell death induced in MDA-MB-231 breast cancer cells by mango kernel extract. Thus, mango kernel extract has potential to be developed into an antibreast cancer mixture, and hence these results are worth studying further.
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Romero-Haro AA, Alonso-Alvarez C. The Level of an Intracellular Antioxidant during Development Determines the Adult Phenotype in a Bird Species: A Potential Organizer Role for Glutathione. Am Nat 2015; 185:390-405. [DOI: 10.1086/679613] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Petrini S, D'Oria V, Piemonte F. Intracellular distribution of glutathionylated proteins in cultured dermal fibroblasts by immunofluorescence. Methods Mol Biol 2015; 1208:395-408. [PMID: 25323522 DOI: 10.1007/978-1-4939-1441-8_28] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
S-glutathionylation is a mechanism of signal transduction by which cells respond effectively and reversibly to redox inputs. The glutathionylation regulates most cellular pathways. It is involved in oxidative cellular response to insult by modulating the transcription factor Nrf2 and inducing the expression of antioxidant genes (ARE); it contributes to cell survival through nuclear translocation of NFkB and activation of survival genes, and to cell death by modulating the activity of caspase 3. It is involved in mitotic spindle formation during cell division by binding cytoskeletal proteins thus contributing to cell proliferation and differentiation. Glutathionylation also interfaces with the mechanism of phosphorylation by modulating several kinases (PKA, CK) and phosphatases (PP2A, PTEN), thus allowing a cross talk between the two processes of signal transduction. Glutathionylation of proteins may also act on cell metabolism by modulating enzymes involved in glycosylation, in the Krebs cycle and in mitochondrial oxidative phosphorylation. Perturbations in protein glutathionylation status may contribute to the etiology of many diseases, thus it is clear the importance to visualize the distribution of glutathionylated proteins in subcellular compartments. This chapter describes the immunofluorescence technique that permits simultaneous detection of glutathionylated proteins and their localization in cellular compartments, using multiple stained cell samples. By confocal laser microscopy analysis of the immunofluorescent cells it is possible to obtain detailed information of submicroscopic structures inside cells and tissues, and to perform correct co-localization analysis between two proteins. The association between glutathione, nuclear lamina, and cytoskeleton has been investigated by employing a helpful assay consisting on the in situ extraction of the cellular matrix from cultured dermal fibroblasts followed by multiple stainings with several primary antibodies. This protocol can be used for the detection of the intracellular distribution and expression of interest proteins and can be customized for a large variety of cells and tissues.
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Affiliation(s)
- Stefania Petrini
- Research Laboratories, Bambino Gesu' Pediatric Hospital IRCCS, P.zza S. Onofrio 4, 00165, Rome, Italy,
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Moreno ML, Escobar J, Izquierdo-Álvarez A, Gil A, Pérez S, Pereda J, Zapico I, Vento M, Sabater L, Marina A, Martínez-Ruiz A, Sastre J. Disulfide stress: a novel type of oxidative stress in acute pancreatitis. Free Radic Biol Med 2014; 70:265-77. [PMID: 24456905 DOI: 10.1016/j.freeradbiomed.2014.01.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 12/26/2013] [Accepted: 01/07/2014] [Indexed: 11/25/2022]
Abstract
Glutathione oxidation and protein glutathionylation are considered hallmarks of oxidative stress in cells because they reflect thiol redox status in proteins. Our aims were to analyze the redox status of thiols and to identify mixed disulfides and targets of redox signaling in pancreas in experimental acute pancreatitis as a model of acute inflammation associated with glutathione depletion. Glutathione depletion in pancreas in acute pancreatitis is not associated with any increase in oxidized glutathione levels or protein glutathionylation. Cystine and homocystine levels as well as protein cysteinylation and γ-glutamyl cysteinylation markedly rose in pancreas after induction of pancreatitis. Protein cysteinylation was undetectable in pancreas under basal conditions. Targets of disulfide stress were identified by Western blotting, diagonal electrophoresis, and proteomic methods. Cysteinylated albumin was detected. Redox-sensitive PP2A and tyrosine protein phosphatase activities diminished in pancreatitis and this loss was abrogated by N-acetylcysteine. According to our findings, disulfide stress may be considered a specific type of oxidative stress in acute inflammation associated with protein cysteinylation and γ-glutamylcysteinylation and oxidation of the pair cysteine/cystine, but without glutathione oxidation or changes in protein glutathionylation. Two types of targets of disulfide stress were identified: redox buffers, such as ribonuclease inhibitor or albumin, and redox-signaling thiols, which include thioredoxin 1, APE1/Ref1, Keap1, tyrosine and serine/threonine phosphatases, and protein disulfide isomerase. These targets exhibit great relevance in DNA repair, cell proliferation, apoptosis, endoplasmic reticulum stress, and inflammatory response. Disulfide stress would be a specific mechanism of redox signaling independent of glutathione redox status involved in inflammation.
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Affiliation(s)
- Mari-Luz Moreno
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain
| | - Javier Escobar
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain; Division of Neonatology, University Hospital Materno-Infantil La Fe, 46026 Valencia, Spain
| | - Alicia Izquierdo-Álvarez
- Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain
| | - Anabel Gil
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain
| | - Salvador Pérez
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain
| | - Javier Pereda
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain
| | - Inés Zapico
- Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain; Centro de Biología Molecular Severo Ochoa, CSIC-Universidad Autónoma de Madrid, Madrid, Spain
| | - Máximo Vento
- Division of Neonatology, University Hospital Materno-Infantil La Fe, 46026 Valencia, Spain
| | - Luis Sabater
- Department of Surgery, University Clinic Hospital, University of Valencia, 46010 Valencia, Spain
| | - Anabel Marina
- Centro de Biología Molecular Severo Ochoa, CSIC-Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio Martínez-Ruiz
- Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain
| | - Juan Sastre
- Department of Physiology, School of Pharmacy, University of Valencia, 46100 Burjasot (Valencia), Spain.
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Abstract
In general protein posttranslation modifications (PTMs) involve the covalent addition of functional groups or molecules to specific amino acid residues in proteins. These modifications include phosphorylation, glycosylation, S-nitrosylation, acetylation, lipidation, among others (Angew Chem Int Ed Engl 44(45):7342-7372, 2005). Although other amino acids can undergo different kinds of oxidative posttranslational modifications (oxPTMs) (Exp Gerontol 36(9):1495-1502, 2001), in this chapter oxPTM will be considered specifically related to Cysteine oxidation, and redox proteomics here is translated as a comprehensive investigation of oxPTMs, in biological systems, using diverse technical approaches. Protein Cysteine residues are not the only amino acid that can be target for oxidative modifications in proteins (Exp Gerontol 36(9):1495-1502, 2001; Biochim Biophys Acta 1814(12):1785-1795, 2011), but certainly it is among the most reactive amino acid (Nature 468(7325):790-795, 2010). Interestingly, it is one of the least abundant amino acid, but it often occurs in the functional sites of proteins (J Mol Biol 404(5):902-916, 2010). In addition, the majority of the Cysteine oxidations are reversible, indicating potential regulatory mechanism of proteins. The global analysis of oxPTMs has been increasingly recognized as an important area of proteomics, because not only maps protein caused by reactive oxygen species (ROS) and reactive nitrogen species (RNS), but also explores protein modulation involving ROS/RNS. Furthermore, the tools and strategies to study this type oxidation are also very abundant and developed, offering high degree of accuracy on the results. As a consequence, the redox proteomics field focuses very much on analyzing Cysteine oxidation in proteins under several experimental conditions and diseases states. Therefore, the identification and localization of oxPTMs within cellular milieu became critical to understand redox regulation of proteins in physiological and pathological conditions, and consequently an important information to develop better strategies for treatment and prevention of diseases associated with oxidative stress.There is a wide range of techniques available to investigate oxPTMs, including gel-based and non-gel-based separation approaches to be combined with sophisticated methods of detection, identification, and quantification of these modifications. The strategies and approaches to study oxPTMs and the respective applications related to physiological and pathological conditions will be discussed in more detail in this chapter.
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Ulasli SS, Celik S, Gunay E, Ozdemir M, Hazman O, Ozyurek A, Koyuncu T, Unlu M. Anticancer Effects of Thymoquinone, Caffeic Acid Phenethyl Ester and Resveratrol on A549 Non-small Cell Lung Cancer Cells Exposed to Benzo(a)pyrene. Asian Pac J Cancer Prev 2013; 14:6159-64. [DOI: 10.7314/apjcp.2013.14.10.6159] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Konigsberg M, Pérez VI, Ríos C, Liu Y, Lee S, Shi Y, Van Remmen H. Effect of oxygen tension on bioenergetics and proteostasis in young and old myoblast precursor cells. Redox Biol 2013; 1:475-82. [PMID: 24191243 PMCID: PMC3814963 DOI: 10.1016/j.redox.2013.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/10/2013] [Accepted: 09/11/2013] [Indexed: 12/27/2022] Open
Abstract
In the majority of studies using primary cultures of myoblasts, the cells are maintained at ambient oxygen tension (21% O2), despite the fact that physiological O2 at the tissue level in vivo is much lower (~1–5% O2). We hypothesized that the cellular response in presence of high oxygen concentration might be particularly important in studies comparing energetic function or oxidative stress in cells isolated from young versus old animals. To test this, we asked whether oxygen tension plays a role in mitochondrial bioenergetics (oxygen consumption, glycolysis and fatty acid oxidation) or oxidative damage to proteins (protein disulfides, carbonyls and aggregates) in myoblast precursor cells (MPCs) isolated from young (3–4 m) and old (29–30 m) C57BL/6 mice. MPCs were grown under physiological (3%) or ambient (21%) O2 for two weeks prior to exposure to an acute oxidative insult (H2O2). Our results show significantly higher basal mitochondrial respiration in young versus old MPCs, an increase in basal respiration in young MPCs maintained at 3% O2 compared to cells maintained at 21% O2, and a shift toward glycolytic metabolism in old MPCs grown at 21% O2. H2O2 treatment significantly reduced respiration in old MPCs grown at 3% O2 but did not further repress respiration at 21% O2 in old MPCs. Oxidative damage to protein was higher in cells maintained at 21% O2 and increased in response to H2O2 in old MPCs. These data underscore the importance of understanding the effect of ambient oxygen tension in cell culture studies, in particular studies measuring oxidative damage and mitochondrial function. Myoblast precursor cells (MPC) were isolated from old and young mice. The effect of ambient (21%) or physiological (3%) O2 tension on MPCs was addressed. Mitochondrial bioenergetics after H2O2 insult was determined regards to age. 3% O2 induces old MPCs to shift from glycolysis toward oxidative phosphorylation. Protein oxidative damage was higher in old MPCs at 21% O2.
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Affiliation(s)
- M Konigsberg
- Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center, San Antonio, TX 78229, USA ; Universidad Autonoma Metropolitana-Iztapalpa, Mexico City, Mexico
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Pastore A, Petrillo S, Tozzi G, Carrozzo R, Martinelli D, Dionisi-Vici C, Di Giovamberardino G, Ceravolo F, Klein MB, Miller G, Enns GM, Bertini E, Piemonte F. Glutathione: a redox signature in monitoring EPI-743 therapy in children with mitochondrial encephalomyopathies. Mol Genet Metab 2013; 109:208-14. [PMID: 23583222 DOI: 10.1016/j.ymgme.2013.03.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/14/2013] [Accepted: 03/14/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Genetically defined Leigh syndrome (LS) is a rare, fatal inherited neurodegenerative disorder that predominantly affects children. Although mitochondrial dysfunction has clearly been associated with oxidative stress, few studies have specifically examined Leigh syndrome patients' blood glutathione levels. In this study, we analyzed the balance between oxidized and reduced glutathione in lymphocytes of 10 patients with genetically confirmed LS and monitored the effects of glutathione status following 6 months of treatment with EPI-743, a novel redox therapeutic. METHODS Lymphocytes were obtained from blood samples of 10 children with a genetically confirmed diagnosis of LS and in 20 healthy subjects. Total, reduced, oxidized and protein-bound glutathione levels were determined by HPLC analysis. Erythrocyte superoxide dismutase and glutathione peroxidase enzyme activities were measured by spectrophotometric assays. Plasma total thiols, carbonyl contents and malondialdehyde were assessed by spectrophotometric and fluorometric assays. RESULTS A significant impairment of all glutathione forms was detected in patients, including a profound decrease of total and reduced glutathione (GSH) associated with high levels of all oxidized glutathione forms (GSSG+GS-Pro; OX). These findings negatively correlated with the glutathione peroxidase activity, which underwent a significant decrease in patients. After treatment with EPI-743, all patients showed a significant increase in reduced glutathione levels and 96% decrease of OX/GSH ratio. CONCLUSIONS The data presented here strongly support glutathione as a "redox blood signature" in mitochondrial disorders and its use as a clinical trial endpoint in the development of mitochondrial disease therapies.
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Affiliation(s)
- Anna Pastore
- Laboratory of Metabolomics and Proteomics, Bambino Gesù Children's Hospital, IRCCS - Rome, Italy
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Zheng B, Wu L, Ma L, Liu S, Li L, Xie W, Li X. Telekin induces apoptosis associated with the mitochondria-mediated pathway in human hepatocellular carcinoma cells. Biol Pharm Bull 2013; 36:1118-25. [PMID: 23657090 DOI: 10.1248/bpb.b13-00058] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Telekin, a eudesmane-type sesquiterpene lactone compound isolated from Chinese folk medicine Carpesium divaricatum, has been reported to strongly inhibit the proliferation of cancer cells. In this study, the involvement of a mitochondria-mediated pathway in the pro-apoptotic action of telekin was investigated in human hepatocellular carcinoma cells. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays showed that telekin exhibited excellent anti-proliferation activity in hepatocellular carcinoma cells and low cytotoxicity to normal hepatocyte cells. Telekin-induced apoptosis was characterized by chromatin condensation, formation of apoptotic bodies, and exposure of phosphatidylserine on the extracellular surface, as revealed by 4,6-diamidino-2-phenylindole (DAPI) nuclear staining and flow cytometry. Flow cytometry analysis showed that telekin induced the loss of mitochondrial membrane potential (MMP), as well as increased the levels of intracellular free calcium and reactive oxygen species (ROS). Additionally, Western blot results demonstrated that telekin induced the decrease in Apaf-1 and Bcl-2 expression, increase in Bax expression, release of cytochrome C, and activation of caspase-9 and caspase-3 in HepG-2 cells. These findings indicate that telekin activates the mitochondria-mediated apoptotic pathway in hepatocellular carcinoma cells and may merit further investigation as a potential therapeutic agent for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Beibei Zheng
- School of Ocean, Shandong University, Weihai 264209, P R China
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Wei XJ, Hu WY, Hu TJ. Effects of carboxymethylpachymaran on signal molecules in chicken immunocytes. Int J Biol Macromol 2013; 59:357-62. [PMID: 23664932 DOI: 10.1016/j.ijbiomac.2013.04.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 04/20/2013] [Accepted: 04/27/2013] [Indexed: 12/09/2022]
Abstract
The study was carried out to investigate the immunomodulation mechanism of carboxymethylpachymaran (CMP). Chicken splenic lymphocytes were cultured in medium alone or with CMP at the final concentration of 50mg/L, 100mg/L, 200mg/L or 400mg/L in vitro for 4h, 8h, 12h or 24h, respectively. The supernatants at different culture periods were analyzed for changes in levels of 6-keto-prostaglandin F1α (6-keto-PGF1α), thromboxane B2 (TXB2) and nitric oxide (NO). The cells were collected to determine contents of oxidized glutathione (GSSG), reduced glutathione (GSH), cyclic AMP (cAMP) and cyclic GMP (cGMP). The results showed that CMP increase the values of NO, 6-keto-PGF1α, TXB2, and the ratio of 6-keto-PGF1α to TXB2 in supernatants. The contents of intracellular GSH, cAMP, cGMP and the ratio of cAMP to cGMP were increased in the cells treated with CMP. The results suggested that CMP enhanced immune functions by increasing the contents of GSH and by regulating arachidonic acid signal transduction systems in chicken splenic lymphocytes. The signal pathway of NO-cGMP plays an important role in CMP-induced activation of chicken splenic lymphocytes.
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Affiliation(s)
- Xiao-Jie Wei
- College of Animal Science and Technology, Guangxi University, Nanning 530005, PR China
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Collins Y, Chouchani ET, James AM, Menger KE, Cochemé HM, Murphy MP. Mitochondrial redox signalling at a glance. J Cell Sci 2013; 125:801-6. [PMID: 22448036 DOI: 10.1242/jcs.098475] [Citation(s) in RCA: 199] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Yvonne Collins
- MRC Mitochondrial Biology Unit, Wellcome Trust-MRC Building, Hills Road, Cambridge CB2 0XY, UK
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