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Li Y, Chen L, Papadopoulos V. The mitochondrial translocator protein (TSPO, 18 kDa): A key multifunctional molecule in liver diseases. Biochimie 2024; 224:91-103. [PMID: 38065288 DOI: 10.1016/j.biochi.2023.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 08/23/2024]
Abstract
Translocator protein (TSPO, 18 kDa), previously known as peripheral-type benzodiazepine receptor, is an evolutionarily conserved and tryptophan-rich 169-amino-acid protein located on the outer mitochondrial membrane. TSPO plays a crucial role in various fundamental physiological functions and cellular processes. Its expression is altered in pathological conditions, thus rendering TSPO a potential tool for diagnostic imaging and an appealing therapeutic target. The investigation of synthetic TSPO ligands as both agonists and antagonists has provided valuable insights into the regulatory mechanisms and functional properties of TSPO. Recently, accumulating evidence has highlighted the significance of TSPO in liver diseases. However, a comprehensive summary of TSPO function in the normal liver and diverse liver diseases is lacking. This review aims to provide an overview of recent advances in understanding TSPO function in both normal liver cells and various liver diseases, with a particular emphasis on its involvement in liver fibrosis and inflammation and addresses the existing knowledge gaps in the field that require further investigation.
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Affiliation(s)
- Yuchang Li
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089, USA.
| | - Liting Chen
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Vassilios Papadopoulos
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089, USA.
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Soliman NA, El Dahmy SI, Khamis T, Sameh R, Alashqar SM, Hussein S. The potential protective and therapeutic effects of cannabidiol oil on experimental Leukemia induced by DMBA in male rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:2389-2400. [PMID: 37837474 DOI: 10.1007/s00210-023-02737-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/20/2023] [Indexed: 10/16/2023]
Abstract
BACKGROUND 7,12-Dimethylbenzanthracene (DMBA) is a member of the polycyclic aromatic hydrocarbon family. It is a member of the polycyclic aromatic hydrocarbon family. It is a mutagenic, carcinogenic, and immunosuppressor agent. Cannabidiol (CBD) is a phytocannabinoid. It has anticonvulsant, anti-inflammatory, anti-anxiety, antioxidant, and anti-cancer properties. The purpose of this study was to investigate the possible protective and therapeutic benefits of CBD oil in DMBA-induced leukemia in rats. METHOD Experimental animals were divided into six groups of five rats each. Group 1 (normal control) included healthy rats. Group 2 included normal rats that received olive oil. Group 3 included normal rats that received CBD. Group 4 included the DMBA-induced leukemic group. Group 5 (prophylactic group) included rats that received CBD as a prophylaxis before IV injection with DMBA. Group 6 (treated group) included DMBA-induced leukemic rats that received CBD as treatment. Liver functions (total, direct and indirect bilirubin, alkaline phosphatase (ALP), alanine transaminase (ALT), aspartate aminotransferase (AST), albumin, globulin, and albumin globulin ratio) were measured. Superoxide dismutase (SOD) and catalase (CAT) were also measured. Total RNA extraction followed by-real time qRT-PCR gene expression of LC3-II, Beclin, mTOR, and P62 was performed. Histopathological examination of liver and spleen tissues was performed. RESULTS Administration of CBD in groups 5 and 6 resulted in a significant improvement of the levels of liver functions compared to the leukemic untreated rats. Also, the levels of catalase and SOD significantly increased after treatment with CBD compared to the leukemic group. After treatment with CBD in groups 5 and 6, there were downregulations in the expression of all studied genes compared to leukemic untreated rats. Treatment with CBD was more statistically effective than prophylactic use. CONCLUSION Administration of CBD resulted in a significant improvement in the biochemical, antioxidant status, morphological, and molecular measures in DMBA-induced leukemia in adult male rats. The therapeutic use was more effective than the prophylactic one.
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Affiliation(s)
- Nabil A Soliman
- Department of Zoology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Samih I El Dahmy
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Tarek Khamis
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Reham Sameh
- Department of Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | | | - Samia Hussein
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
- Department of Basic Medical Sciences, Ibn Sina University for Medical Sciences, Amman, Jordan.
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Skrajnowska D, Idkowiak J, Szterk A, Ofiara K, Augustyniak K, Bobrowska-Korczak B. Effect of Nano- and Microzinc Supplementation on the Mineral Composition of Bones of Rats with Induced Mammary Gland Cancer. Foods 2023; 12:foods12061348. [PMID: 36981273 PMCID: PMC10047967 DOI: 10.3390/foods12061348] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND The aim of this study was to determine changes in the mineral composition of the bones of rats with chemically induced mammary gland cancer and to attempt to establish whether a specific diet modification involving the inclusion of zinc ions in two forms-nano and micro-will affect the mineral composition of the bones. METHODS Female Sprague-Dawley rats were used for the research. The animals were randomly assigned to three experimental groups. All animals were fed a standard diet (Labofeed H), and selected groups additionally received zinc nanoparticles or microparticles in the amount of 4.6 mg/mL. To induce mammary cancer, the animals were given 7,12-dimethyl-1,2-benz[a]anthracene. The content of Ag, As, B, Ba, Cd, Cr, Cu, Mn, Ni, Pb, Rb, Se, Sr, Tl, U, and V was determined using ICP-MS, while that of Ca, Fe, K, Mg, Na, and Zn was determined using FAAS. RESULTS The use of a diet enriched with zinc nano- or microparticles significantly influenced the content of the elements tested. In the bones of rats fed a diet with zinc nanoparticles, changes were found in the content of Ca, Mg, Zn, Cd, U, V, and Tl, while in the case of the diet supplemented with zinc microparticles, there were differences in six elements-Ca, Mg, B, Cd, Ag, and Pb-compared to animals receiving an unsupplemented diet. CONCLUSIONS The content of elements in the bone tissue of rats in the experimental model indicates disturbances of mineral metabolism in the tissue at an early stage of mammary cancer.
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Affiliation(s)
- Dorota Skrajnowska
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Jakub Idkowiak
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic
| | - Arkadiusz Szterk
- Transfer of Science sp. z o. o., Strzygłowska 15, 04-872 Warsaw, Poland
| | - Karol Ofiara
- Transfer of Science sp. z o. o., Strzygłowska 15, 04-872 Warsaw, Poland
| | - Kinga Augustyniak
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Barbara Bobrowska-Korczak
- Department of Toxicology and Food Science, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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Restraint stress abates the antioxidant potential of melatonin on dimethyl benz (a) anthracene (DMBA) induced carcinogenesis. Med Oncol 2020; 37:96. [PMID: 32990835 PMCID: PMC7522450 DOI: 10.1007/s12032-020-01422-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/15/2020] [Indexed: 12/24/2022]
Abstract
Free radical involvement in initiation, promotion and progression of carcinogenesis, implicates that scavengers of free radicals may act as inhibitors in the carcinogenic process. Melatonin, an antioxidant was used in the present study to evaluate its effectiveness on skin carcinogenesis induced by DMBA both with and without chronic restraint stress (CRS). Fifty Swiss albino young male rats were divided into five groups of 10 rats each as controls, topical DMB alone, Pre CRS-DMBA, melatonin DMBA and Pre-CRS-DMBA-melatonin treated groups. After 18 weeks blood was collected along with liver and skin samples. These were used for antioxidant enzyme assay, DNA damage and fluorescent spectra analysis. Melatonin showed antioxidant potential in combatting DMBA induced skin carcinogenesis measured by free radical scavenging enzymes and in vivo antioxidant status, DNA damage. Sensitive detection of the DMBA induced micro biochemical changes was possible by fluorescent spectroscopy from the transformed ratio of fluorescent intensity (F1 530 nm/630 nm) otherwise found constant for normal tissues. By melatonin treatment this ratio was similar to control values. The decreased antioxidant biochemical parameters depicting oxidative stress were comparable to comet assay and fluorescent studies, endorsing the chemo-preventive efficacy of melatonin against skin carcinogenesis caused by DMBA. CRS pre-exposure diminished the chemo-preventive/antioxidant ability of melatonin and the results were same as DMBA alone treatment, showing stress affected both cancer development and chemoprevention. CRS decreased the antioxidant potential of melatonin. Hence, managing stress could be perceived in cancer chemoprevention. Further studies focusing on stress reduction are needed.
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El-Shaheed S, Sahyon H, Youssef M, Negm A. Protocatechuic acid decreased telomerase reverse transcriptase (TERT) expression in DMBA-induced liver carcinogenesis mice model. ACTA ACUST UNITED AC 2020. [DOI: 10.4993/acrt.28.25] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Samar El-Shaheed
- Biochemistry division, Chemistry Department, Faculty of Science, Mansoura University
| | - Heba Sahyon
- Biochemistry division, Chemistry Department, Faculty of Science, Kafr Elsheikh University
| | - Magdy Youssef
- Biochemistry division, Chemistry Department, Faculty of Science, Mansoura University
| | - Amr Negm
- Biochemistry division, Chemistry Department, Faculty of Science, Mansoura University
- Department of Chemistry, College of Science, King Faisal University, Al-Ahasa
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Corso CR, Acco A. Glutathione system in animal model of solid tumors: From regulation to therapeutic target. Crit Rev Oncol Hematol 2018; 128:43-57. [DOI: 10.1016/j.critrevonc.2018.05.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/10/2018] [Accepted: 05/16/2018] [Indexed: 02/07/2023] Open
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Farcas AD, Mot AC, Zagrean-Tuza C, Toma V, Cimpoiu C, Hosu A, Parvu M, Roman I, Silaghi-Dumitrescu R. Chemo-mapping and biochemical-modulatory and antioxidant/prooxidant effect of Galium verum extract during acute restraint and dark stress in female rats. PLoS One 2018; 13:e0200022. [PMID: 29969484 PMCID: PMC6029781 DOI: 10.1371/journal.pone.0200022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/18/2018] [Indexed: 12/13/2022] Open
Abstract
Galium verum is a well-known medicinal plant which is used in various pathologies. G. verum extracts are characterized here using chromatography, where among the rich pool of phenolic acids of flavonoids two known anti-stress modulators, chlorogenic acid and rutin are identified in high quantities. Additionally, the extracts are characterized using a series of in vitro assays (EPR, DPPH, TPC and TEAC). Considering the chemical findings, the potential beneficial effects of the G. verum extract are explored here in a living organism exposed to stress induced oxidative damages. Thus, the biochemical-modulatory and antioxidant roles of two doses of G. verum extract are examined in animals exposed to acute restraint and dark stress (S). The animals were divided in groups [control, S, SG1 (exposed to 25 mg G. verum extract), SG2 (50 mg extract)]. Increased levels of lipid peroxidation (TBARS from 4.43 to 8.06 nmol/mL), corticosterone from 0.43 to 1.96 μg/dL and epinephrine from 44.43 to 126.7 μg/mL, as well as decreased antioxidant enzymes activities (SOD/CAT) were observed in the S group. The G. verum extract afforded a near-normal equilibrium within the biochemical parameters of animals exposed to RS, by reducing oxidative damage (TBARS at a 3.73 nmol/mL; CS at 0.90 μg/dL; EP at 63.72 μg/mL) and by restoring the antioxidant balance.
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Affiliation(s)
- Anca D. Farcas
- Faculty of Biology and Geology, Babes-Bolyai University, Cluj-Napoca, Romania
- Institute of Biological Research, Cluj-Napoca, branch of NIRDSB, București, Romania
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Augustin C. Mot
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Cezara Zagrean-Tuza
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Vlad Toma
- Faculty of Biology and Geology, Babes-Bolyai University, Cluj-Napoca, Romania
- Institute of Biological Research, Cluj-Napoca, branch of NIRDSB, București, Romania
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Claudia Cimpoiu
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Anamaria Hosu
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Marcel Parvu
- Faculty of Biology and Geology, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Ioana Roman
- Institute of Biological Research, Cluj-Napoca, branch of NIRDSB, București, Romania
| | - Radu Silaghi-Dumitrescu
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
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Suppression of skin tumorigenesis in CD109-deficient mice. Oncotarget 2018; 7:82836-82850. [PMID: 27756876 PMCID: PMC5347736 DOI: 10.18632/oncotarget.12653] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 10/02/2016] [Indexed: 12/17/2022] Open
Abstract
CD109 is a glycosylphosphatidylinositol-anchored glycoprotein that is highly expressed in several types of human cancers, particularly squamous cell carcinomas. We previously reported that CD109-deficient mice exhibit epidermal hyperplasia and chronic skin inflammation. Although we found that CD109 regulates differentiation of keratinocytes in vivo, the function of CD109 in tumorigenesis remains unknown. In this study, we investigated the role of CD109 in skin tumorigenesis using a two-stage carcinogenesis model in CD109-deficient mice with chronic skin inflammation. Immunohistochemical analysis revealed a higher level of TGF-β protein expression in the dermis of CD109-deficient mice than in that of wild-type mice. Additionally, immunofluorescence analysis showed that Smad2 phosphorylation and Nrf2 expression were enhanced in primary keratinocytes from CD109-deficient mice compared with in those from wild-type mice. Although no significant difference was found in conversion rates from papilloma to carcinoma between wild-type and CD109-deficient mice in the carcinogenesis model, we observed fewer and smaller papillomas in CD109-deficient mice than in wild-type mice. Apoptosis and DNA damage marker levels were significantly reduced in CD109-deficient skin compared with in wild-type skin at 24 h after 7, 12-dimethylbenz (α) anthracene treatment. Furthermore, mutation-specific PCR revealed that the mutation frequency of the H-ras gene was less in CD109-deficient skin than in wild-type skin in this model. These results suggest that CD109 deficiency suppresses skin tumorigenesis by enhancing TGF-β/Smad/Nrf2 pathway activity and decreasing the mutation frequency of the H-ras gene.
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Bilal N, Suhail N, Hasan S, Ashraf GM, Fatima S, Khan HY, Alharbi MS, Alexiou A, Banu N. Exacerbation of N-nitrosodiethylamine Induced Hepatotoxicity and DNA Damage in Mice Exposed to Chronic Unpredictable Stress. Front Pharmacol 2017; 8:360. [PMID: 28663731 PMCID: PMC5472085 DOI: 10.3389/fphar.2017.00360] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/26/2017] [Indexed: 12/29/2022] Open
Abstract
Psychological stress contributes to increased susceptibility to a number of diseases including cancer. The present study was designed to assess the effect of chronic unpredictable stress on N-nitrosodiethylamine induced liver toxicity in terms of in vivo antioxidant status and DNA damage in Swiss albino mice. The animals used in this study were randomized into different groups based on the treatment with N-nitrosodiethylamine or chronic unpredictable stress alone and post-stress administration of N-nitrosodiethylamine. The mice were sacrificed after 12 weeks of treatment, and the status of major enzymatic and non-enzymatic antioxidants, liver function markers, lipid peroxidation and the extent of DNA damage were determined in circulation and liver tissues of all the groups. The N-nitrosodiethylamine treated group showed significantly compromised levels of the antioxidant enzymes, lipid peroxidation, and the liver function markers with enhanced DNA damage as compared to chronic unpredictable stress or control groups. A similar but less typical pattern observed in the chronic unpredictable stress treated mice. All the measured biochemical parameters were significantly altered in the group treated with the combination of chronic unpredictable stress and N-nitrosodiethylamine when compared to controls, or chronic unpredictable stress alone and/or N-nitrosodiethylamine alone treated groups. Thus, exposure to continuous, unpredictable stress conditions even in general life may significantly enhance the hepatotoxic potential of N-nitrosodiethylamine through an increase in the oxidative stress and DNA damage.
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Affiliation(s)
- Nayeem Bilal
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India
| | - Nida Suhail
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India.,Department of Biochemistry, Faculty of Medicine & Applied Medical Sciences, Northern Border UniversityArar, Saudi Arabia
| | - Shirin Hasan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India.,Department of Surgery, Loyola University Medical Center, MaywoodIL, United States
| | - Ghulam M Ashraf
- King Fahd Medical Research Center, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Sabiha Fatima
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud UniversityRiyadh, Saudi Arabia
| | - Husain Y Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India
| | - Mariam S Alharbi
- College of Medical RehabilitationQassim University, Buraidah, Saudi Arabia
| | | | - Naheed Banu
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim UniversityAligarh, India.,College of Medical RehabilitationQassim University, Buraidah, Saudi Arabia
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Amin SN, El-Aidi AA, Zickri MB, Rashed LA, Hassan SS. Hepatoprotective effect of blocking N-methyl-d-aspartate receptors in male albino rats exposed to acute and repeated restraint stress. Can J Physiol Pharmacol 2017; 95:721-731. [PMID: 28317386 DOI: 10.1139/cjpp-2016-0556] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stress affects many organs in addition to the brain, including the liver. We assessed the effects on the liver of blocking N-methyl-d-aspartate (NMDA) glutamate receptors with memantine in acute and repeated restraint stress. Forty-two male albino rats were divided into 7 groups; control, acute restraint stress (ARS), ARS + memantine, repeated restraint stress, repeated restraint + memantine, and positive control groups. We measured serum iron, zinc, alanine transferase and aspartame transferase, hepatic malondialdehyde, tumor necrosis factor-α (TNF-α), glutathione peroxidase, superoxide dismutase, metallothionein content, zinc transporter ZRT/IRT-like protein 14 mRNA expression, and hepcidin expression. We conducted a histopathological evaluation via histological staining and immunostaining for glial fibrillary acidic protein and synaptophysin expression, both of which are markers of hepatic stellate cell (HSC) activation. Both ARS and repeated stress increased markers of hepatic cell injury, oxidative stress, and HSC activation. Blocking NMDA with memantine provided a hepatoprotective effect in acute and repeated restraint stress and decreased hepatic cell injury, oxidative stress, and HSC activation.
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Affiliation(s)
- Shaimaa Nasr Amin
- a Department of Medical Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | - Maha Baligh Zickri
- c Department of Histology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Laila Ahmed Rashed
- d Department of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Sherif Sabry Hassan
- e Department of Anatomy, Faculty of Medicine, Cairo University, Cairo, Egypt.,f California University of Science and Medicine, School of Medicine, Department of Medical Education, Colton, CA, USA
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Salem A, Noaman E, Kandil E, Badawi A, Mostafa N. Crystal structure and chemotherapeutic efficacy of the novel compound, gallium tetrachloride betaine, against breast cancer using nanotechnology. Tumour Biol 2016; 37:11025-38. [PMID: 26894603 DOI: 10.1007/s13277-016-4969-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/02/2016] [Indexed: 01/17/2023] Open
Abstract
The objective of this study was to investigate the antitumor efficacy of a novel synthesized compound, betaine gallium-tetrachloride (BTG), alone or combined with ZnO-nanoparticles (BTG + ZnO-NPs) on the incidence of 7, 12-dimethylbenz-anthrathene-induced mammary tumor in female rats. Crystal and molecular structure of the prepared BTG were identified using X-ray crystallography. In vitro study revealed BTG more cytotoxic than BTG + ZnO-NPs on human breast cancer (MCF-7) cell line. In vivo study demonstrated that the blood antioxidant status of tumor-bearing rats (DMBA group) was significantly lower than normal noticeable by a significant decrease in GSH content, GPx, SOD, and CAT activities associated with a significantly high MDA content. Both treatments have significantly elevated SOD and CAT activities with a concomitant decrease of MDA level compared to DMBA group. However, BTG + ZnO-NPs accentuated the decrease of GSH regarding DMBA group. The results showed also that both treatments significantly activate caspase-3 enzyme and apoptosis in mammary glands. Their administration to tumor-bearing rats was found to significantly reduce plasma iron and iron-binding capacity (TIBC) compared to DMBA group. Regarding liver function, both treatments significantly reduced the increase of ALT and AST activities compared to DMBA group. However, BTG + ZnO-NPs decreased albumin below normal level. Histopathological studies showed that normalization of tissue structures was higher in BTG than BTG + ZnO-NPs treatment. According to the results obtained, it is observed that the antitumor effect of BTG alone was as strong as BTG + ZnO-NPs and even more efficient in some aspects accordingly, a combination is not needed. Thus, the novel synthetic gallium derivatives may potentially present a new hope for the development of breast cancer therapeutics, which should attract further scientific and pharmaceutical interest.
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Affiliation(s)
- Ahmed Salem
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Eman Noaman
- Medical Laboratory Department, Faculty of Applied Medical Science, Al Majmaah University, KSA and National Center for Radiation Research and Technology. Atomic Energy Authority, Cairo, Egypt
| | - Eman Kandil
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt.
| | - Abdelfattah Badawi
- Petrochemical Department, Egyptian Petroleum Research Institute, Cairo, Egypt
| | - Nihal Mostafa
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
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Suhail N, Bilal N, Hasan S, Ahmad A, Ashraf GM, Banu N. Chronic unpredictable stress (CUS) enhances the carcinogenic potential of 7,12-dimethylbenz(a)anthracene (DMBA) and accelerates the onset of tumor development in Swiss albino mice. Cell Stress Chaperones 2015; 20:1023-36. [PMID: 26272695 PMCID: PMC4595425 DOI: 10.1007/s12192-015-0632-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/25/2015] [Accepted: 07/28/2015] [Indexed: 12/19/2022] Open
Abstract
Social stressors evolving from individual and population interactions produce stress reactions in many organisms (including humans), influencing homeostasis, altering the activity of the immunological system, and thus leading to various pathological states including cancer and their progression. The present study sought to validate the effectiveness of chronic unpredictable stress (CUS) in cancer promotion and to assess oxidative stress outcomes in terms of various in vivo biochemical parameters, oxidative stress markers, DNA damage, and the development of skin tumors in Swiss albino mice. Animals were randomized into different groups based on their exposure to CUS alone, 7,12-dimethylbenz(a)anthracene (DMBA) alone (topical), and DMBA-12-O-tetradecanoylphorbol-13-acetate (TPA) (topical) and exposure to CUS prior to DMBA or DMBA-TPA treatments and sacrificed after 16 weeks of treatment. Prior exposure to CUS significantly increased the pro-oxidant effect of carcinogen, depicted by compromised levels of antioxidants in the circulation and skin, accompanied by enhanced lipid peroxidation, plasma corticosterone, and marker enzymes as compared to DMBA-alone or DMBA-TPA treatments. DNA damage results corroborated the above biochemical outcomes. Also, the development of skin tumors (in terms of their incidence, tumor yield, and tumor burden) in mice in the presence and absence of stress further strongly supported our above biochemical measurements. CUS may work as a promoter of carcinogenesis by enhancing the pro-oxidant potential of carcinogens. Further studies may be aimed at the development of interventions for disease prevention by identifying the relations between psychological factors and DNA damage.
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Affiliation(s)
- Nida Suhail
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh (U.P.), India.
- Department of Biochemistry, Faculty of Medicine and Applied Medical Sciences, Northern Borders University, Arar, Kingdom of Saudi Arabia.
| | - Nayeem Bilal
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh (U.P.), India
| | - Shirin Hasan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh (U.P.), India
- Department of Surgery, Loyola University Medical Center, Maywood, Illinois, USA
| | - Ausaf Ahmad
- Amity Institute of Biotechnology (AIB), Amity University Uttar Pradesh (AUUP), Lucknow, Uttar Pradesh (U.P.), 226010, India
| | - Ghulam Md Ashraf
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh (U.P.), India
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Naheed Banu
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh (U.P.), India
- College of Medical Rehabilitation, Qassim University, Qassim, P.O. Box 2100, Buraydah, 51451, Saudi Arabia
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Tabaczar S, Domeradzka K, Czepas J, Piasecka-Zelga J, Stetkiewicz J, Gwoździński K, Koceva-Chyła A. Anti-tumor potential of nitroxyl derivative Pirolin in the DMBA-induced rat mammary carcinoma model: A comparison with quercetin. Pharmacol Rep 2015; 67:527-34. [PMID: 25933965 DOI: 10.1016/j.pharep.2014.12.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 10/21/2014] [Accepted: 12/18/2014] [Indexed: 01/29/2023]
Abstract
BACKGROUND Considering the role of oxidative stress in carcinogenesis, we investigated the effect of synthetic antioxidant Pirolin (3-carbamoyl-2,2,5,5-tetramethylpyrroline-1-oxyl) on breast cancer progression. Since the anticancer drugs may cause cardiotoxicity due to oxidative stress in the heart muscle, we also evaluated Pirolin performance in heart tissue and compared its effect with that of the natural dietary flavonoid quercetin. METHODS Sprague-Dawley rats were administered with 7,12-dimethylbenz(a)anthracene (DMBA) and then treated ip with an antioxidant (each at a dose of 10mg/kg b.w.) for 14 days. The histopathology of tumors, their size and multiplicity were assesed. The effect of antioxidants on heart tissue was evaluated by the oxidative stress markers and poly (ADP-ribose) polymerase 1 (PARP 1) cleavage. RESULTS The median number of tumors and their volume, at the end of the study, were considerably smaller in both antioxidant-treated groups. We found a better antioxidative performance of quercetin in the heart, since a restoration of the GSH pool and decreased amount of hydroperoxides were observed. Antioxidants did not prevent cardiomyocytes from apoptosis. CONCLUSION The attenuation of tumor progression by Pirolin was comparable with the action of quercetin. No negative changes were observed in the heart of animals after Pirolin treatment. Thus, its use in targeting deregulated redox pathways should be further studied.
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Affiliation(s)
- Sabina Tabaczar
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland.
| | | | - Jan Czepas
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | | | | | - Krzysztof Gwoździński
- Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Aneta Koceva-Chyła
- Department of Thermobiology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
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Skrajnowska D, Bobrowska-Korczak B, Tokarz A, Bialek S, Jezierska E, Makowska J. Copper and resveratrol attenuates serum catalase, glutathione peroxidase, and element values in rats with DMBA-induced mammary carcinogenesis. Biol Trace Elem Res 2013; 156:271-8. [PMID: 24213724 PMCID: PMC3844146 DOI: 10.1007/s12011-013-9854-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/25/2013] [Indexed: 01/01/2023]
Abstract
In this paper, a hypothesis was assessed whether or not the intoxication with copper and supplementation with copper plus resveratrol would result in changes in the activities of catalase and glutathione peroxidase and moreover if the characteristic changes would appear in concentrations of copper, iron, calcium, magnesium, and zinc in the serum of rats with chemically induced carcinogenesis. Female Sprague-Dawley rats were divided into study groups which, apart from the standard diet, were treated with copper (42.6 mg Cu/kg food as CuSO4·5H2O) or copper plus resveratrol (0.2 mg/kg body) via gavage for a period from 40 days until 20 weeks of age. In cancer groups, the rats were treated with a dose of 80 mg/body weight of 7,12-dimethyl-1,2-benz[a]anthracene (DMBA) given in rapeseed oil at 50 and 80 days of age to induce mammary carcinogenesis. The control groups included the rats kept in the same conditions and fed with the same diet as the animals from the study groups, but not DMBA-treated. The activity of catalase significantly decreased in groups of rats with mammary carcinogenesis that were supplemented with copper (p < 0.05) or copper plus resveratrol (p < 0.001) in comparison with the control groups that received the same diets. In cancer groups of nonsupplemented rats, the increase of glutathione peroxidase activity was observed. The process of carcinogenesis and the applied supplementation significantly altered the concentrations of trace elements in serum, in particular as concerns iron and copper. The mean serum iron levels in rats with breast cancer were significantly lower than those in the control groups (p < 0.001). The mean serum copper levels significantly decreased in the groups of rats with mammary carcinogenesis that were supplemented with copper or copper plus resveratrol in comparison with the control groups that received the same diets (p < 0.001). The characteristic changes in iron content and the zinc/copper and zinc/iron ratios in blood may be used as one of the prognostic factors in breast cancer research.
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Affiliation(s)
- Dorota Skrajnowska
- Department of Bromatology, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | | | - Andrzej Tokarz
- Department of Bromatology, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Slawomir Bialek
- Department of Biochemistry, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Ewelina Jezierska
- Department of Bromatology, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Justyna Makowska
- Department of Bromatology, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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15
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Shen YB, Voilqué G, Odle J, Kim SW. Dietary L-tryptophan supplementation with reduced large neutral amino acids enhances feed efficiency and decreases stress hormone secretion in nursery pigs under social-mixing stress. J Nutr 2012; 142:1540-6. [PMID: 22739380 DOI: 10.3945/jn.112.163824] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Tryptophan (Trp), the rate-limiting substrate of serotonin [5-hydroxytryptoamine (5-HT)] synthesis in the brain, competes with large neutral amino acids (LNAA) to cross the blood-brain barrier. This study was designed to evaluate the effect of L-Trp supplementation on nursery pigs experiencing social-mixing stress and fed diets varying in LNAA concentrations. Forty-eight individually housed barrows at 6 wk of age were randomly allotted to 4 dietary treatments based on a 2 × 2 factorial arrangement, with L-Trp supplementation (0 or 0.6%) and LNAA concentrations (4.5 or 3.8%) as the 2 main factors. Pigs were fed the diets for 7 d. On d 4, pigs within a treatment were paired in a new pen to create social-mixing stress and behavior was recorded for 24 h. Body weight was measured on d 0, 4, 5, and 7. Saliva and blood were collected on d 4 and 7. On d 7, pigs were killed to obtain hypothalami. During the entire period excluding the mixing day (d 5), L-Trp supplementation improved (P < 0.01) feed efficiency of pigs and lowering the LNAA further enhanced (P < 0.05) the effects of L-Trp. Supplementation of 0.6% L-Trp increased (P < 0.001) hypothalamic 5-HT and 5-hydroxyindoleacetic acid. The salivary cortisol concentration was reduced (P < 0.05) by lowering the LNAA. Collectively, lowering the LNAA further enhanced the improvement of feed efficiency by L-Trp supplementation of nursery pigs under social-mixing stress in association with reduced stress hormones, indicating that reducing LNAA in the diet can facilitate the effect of L-Trp on the stress response of pigs.
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Affiliation(s)
- Yan Bin Shen
- Department of Animal Science, North Carolina State University, Raleigh, NC, USA
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16
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Repeated short-term stress synergizes the ROS signalling through up regulation of NFkB and iNOS expression induced due to combined exposure of trichloroethylene and UVB rays. Mol Cell Biochem 2011; 360:133-45. [DOI: 10.1007/s11010-011-1051-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 08/27/2011] [Indexed: 10/17/2022]
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Chronic unpredictable stress exacerbates 7,12-dimethylbenz (a) anthracene induced hepatotoxicity and nephrotoxicity in Swiss albino mice. Mol Cell Biochem 2011; 355:117-26. [PMID: 21533768 DOI: 10.1007/s11010-011-0845-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 04/20/2011] [Indexed: 10/18/2022]
Abstract
Oxidative stress, a pervasive condition induced by stress has been implicated and recognized to be a prominent feature of various pathological states including cancer and their progression. The present study sought to validate the effectiveness of chronic unpredictable stress (CUS) on hepatic and renal toxicity in terms of alterations of various in vivo biochemical parameters, oxidative stress markers and the extent of DNA damage in Swiss albino mice. Animals were randomized into different groups based on their exposure to CUS alone, 7,12-dimethylbenz (a) anthracene (DMBA) alone (topical), DMBA-12-O-tetradecanoylphorbol-13-acetate (TPA) (topical), and exposure to CUS prior to DMBA or DMBA-TPA treatment, and sacrificed after 16 weeks of treatment. Prior exposure to CUS increased the pro-oxidant effect of carcinogen as depicted by significantly compromised levels of antioxidants; superoxide dismutase, catalase, glutathione-S-transferase, glutathione reductase, reduced glutathione in hepatic and renal tissues accompanied by a significant elevation of thiobarbituric acid reactive species (TBARS) as compared to DMBA alone or DMBA-TPA treatments. Loss of structural integrity at the cellular level due to stress-induced oxidative damage was demonstrated by significant increases in the hepatic levels of intracellular marker enzymes such as glutamate oxaloacetate transaminase, glutamate pyruvate transaminase and alkaline phosphatase, and significantly reduced levels of uric acid in kidney tissues. The results of DNA damage studies further positively correlated with all the above biochemical measurements. Thus, exposure to physical or psychological stress may significantly enhance the hepatotoxic and nephrotoxic potential of carcinogens through enhanced oxidative stress even if the treatment is topical.
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Dimitrova-Shumkovska J, Veenman L, Ristoski T, Leschiner S, Gavish M. Decreases in binding capacity of the mitochondrial 18 kda translocator protein accompany oxidative stress and pathological signs in rat liver after DMBA exposure. Toxicol Pathol 2011; 38:957-68. [PMID: 21037200 DOI: 10.1177/0192623310379137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
7,12-Dimethylbenz[a]anthracene (DMBA) presents a pollutant implicated in various toxicological effects. The aim of this experiment was to study the effects of DMBA administration on oxidative stress, histopathological signs, and 18 kDa translocator protein (TSPO) binding characteristics in rat liver. We also studied the effects of dose stoichiometry, dose frequency, and duration of protocol of DMBA administration. In this study, rats surviving eighteen weeks after DMBA exposure showed mild to moderate histopathological changes in the liver, mainly characterized by glossy appearance of hepatocytes, heterochromatic nuclei, and glycogen overload in the midzonal region of the hepatic lobe. These changes were accompanied by significant rises in oxidant levels, along with declines in nonenzymic antioxidants, indicating that DMBA induced oxidative stress in the liver. This finding correlated well with decreases in TSPO binding capacity in the liver of the rats in our study. Other studies have shown that TSPO can be affected by oxidative stress, as well as contribute to oxidative stress at mitochondrial levels. Further studies are needed to assay whether the decreases in TSPO density in the liver are part of the damaging effects caused by DMBA or a compensatory response to the oxidative stress induced by DMBA.
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Affiliation(s)
- Jasmina Dimitrova-Shumkovska
- Institute of Biology, Department of Biochemistry and Physiology, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, Republic of Macedonia.
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Sun XG, Zhong XL, Liu ZF, Cai HB, Fan Q, Wang QR, Liu Q, Song YH, He SQ, Zhang XF, Lu ZP. Proteomic analysis of chronic restraint stress-induced Gan (肝)-stagnancy syndrome in rats. Chin J Integr Med 2010; 16:510-7. [PMID: 21110176 DOI: 10.1007/s11655-010-0525-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To analyze the proteomic characteristics of Gan (肝)-stagnancy syndrome (GSS) by seeking the differential protein in blood and tissues of GSS model rats. METHODS GSS model rats were established by chronic restraint stress, keeping rats in restrain chamber for 6 h every day for 21 successive days. Their blood and liver samples were collected at the end of experiment for differential protein detection with methods of isoelectrofocusing and polyacrylamide SDS-PAGE, silver staining, and scanning. The gel images were analyzed with Imagemaster 2D Elite software, and the excavated differential protein spots were identified with matrix assistant laser resolving TOF mass spectrometry, Western blot, ELISA, and RT-PCR, respectively. RESULTS A method for isolating the protein in blood serum and tissues by two-dimensional gel electrophoresis was established and optimized. Six serum proteins and three liver proteins that differentially expressed were identified. The down-regulated differential proteins in serum of GSS model rats were serum albumin precursor, beta 1 globin, antibody against muscle acetylcholine receptor, Ig lambda-2 C region, and transthyretin (TTR), and those in liver tissue were aryl sulfotransferase, enoyl-CoA hydratase, and TTR. TTR down-regulation was found in both serum and liver. Preliminary biological information analysis showed that these differential proteins involved in immune, neuroendocrine, nutrition, and substance metabolism. CONCLUSION Proteomic analysis of differential proteins showed that TTR, aryl sulfotransferase, and enoyl-CoA hydratase expressions are downregulated in the GSS model rats, suggesting that the susceptibility of cancer could be enhanced by chronic stress.
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Affiliation(s)
- Xue-gang Sun
- Laboratory of Traditional Chinese Medicine Syndrome, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
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Bao L, Yao XS, Yau CC, Tsi D, Chia CS, Nagai H, Kurihara H. Protective effects of bilberry (Vaccinium myrtillus L.) extract on restraint stress-induced liver damage in mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:7803-7807. [PMID: 18690680 DOI: 10.1021/jf800728m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Our experiments showed that 18 h restraint stress could induce serious liver damage, with an increase in plasma alanine aminotransferase (ALT) level (107.68 +/- 3.19 U/L vs 18.08 +/- 1.46 U/L). Meanwhile, we observed increased malondialdehyde (MDA) levels and lowered oxygen radical absorbance capacity (ORAC) values in plasma and liver of restraint mice compared with starved mice. Bilberry extract (containing 42.04% anthocyanins) was oral administrated to mice at 50, 100, and 200 mg/(kg x day) for five days, which remarkably decreased plasma ALT level to 17.23 +/- 2.49 U/L at the dose of 200 mg/(kg x day) and thus alleviated stress-induced liver damage. In addition, bilberry extracts increased glutathione (GSH) and vitamin C levels and significantly decreased MDA and nitric oxide (NO) levels in the liver tissues. These results suggest that bilberry extract plays an important role in protecting against restraint stress-induced liver damage by both scavenging free radicals activity and lipid peroxidation inhibitory effect. This study showed the beneficial health effects of bilberry extract through its antioxidative action.
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Affiliation(s)
- Li Bao
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
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Gonçalves L, Dafre AL, Carobrez SG, Gasparotto OC. A temporal analysis of the relationships between social stress, humoral immune response and glutathione-related antioxidant defenses. Behav Brain Res 2008; 192:226-31. [PMID: 18511135 DOI: 10.1016/j.bbr.2008.04.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2007] [Revised: 04/11/2008] [Accepted: 04/14/2008] [Indexed: 11/25/2022]
Abstract
The exposure to different kinds of stress impacts on the reactive oxygen species production with potential risk to the integrity of the tissues. Psychological or biological stress is responsible for a significant increase in the oxidative stress markers and also for activation of the antioxidant defense system. In this study, we analyzed the relationships between social stress, humoral immune response and glutathione-related antioxidant defenses. Groups of male Swiss mice were subjected to different lengths of social stress exposure (social confrontation) which varied from 1 up to 13 days. As a biological stressor, 10(9) sheep red blood cells (SRBC)/mL were injected by intraperitoneal route. As controls, animals not subjected to social stress and/or injected with vehicle solution were used. The serum samples and the cerebral cortex were collected at 4 h, 3, 5, 7, 9, 11, and 13 days after the end of social confrontation. The results indicated that the antioxidant enzymes activities were affected by psychological as well as by biological stressor. These alterations were dependent on the timing of stress exposure which resulted in a positive or in a negative correlation between the antibody titres to SRBC and antioxidant enzymes. We also discuss the possible role of SRBC injection in the modulation of the effects of psychosocial stress on antioxidant metabolism.
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Affiliation(s)
- Luciane Gonçalves
- Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
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Miyashita T, Yamaguchi T, Motoyama K, Unno K, Nakano Y, Shimoi K. Social stress increases biopyrrins, oxidative metabolites of bilirubin, in mouse urine. Biochem Biophys Res Commun 2006; 349:775-80. [PMID: 16949032 DOI: 10.1016/j.bbrc.2006.08.098] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2006] [Accepted: 08/17/2006] [Indexed: 11/28/2022]
Abstract
We investigated whether or not three kinds of social stress (isolation, crowding, and confrontation) increase urinary excretion of biopyrrins, oxidative metabolites of bilirubin, in mice. Male BALB/c mice (4 weeks old) were housed 5 per cage for 10 days. After acclimatization, mice were exposed to the above mentioned three kinds of psychosocial stress. Mouse blood and urine samples were collected after 2, 7, and 30 days of stress. Serum levels of corticosterone and urinary levels of biopyrrins were determined by EIA and ELISA, respectively. Adrenal hypertrophy, significant increases in serum concentration of corticosterone and in urinary excretion of biopyrrins were observed in mice exposed to these types of social stress for 7 days. These levels decreased after 30 days, though they were still rather high compared to the control group. These results suggested that social stress causes oxidative stress and that biopyrrins could be useful biomarkers of psychosocial stress.
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Affiliation(s)
- Tomoya Miyashita
- Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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