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Ghasempour Dabaghi G, Rabiee Rad M, Mohammad-Zamani M, Karimi Shervedani A, Bahrami-Samani F, Heshmat-Ghahdarijani K. The role of coenzyme Q10 as a preventive and therapeutic agent for the treatment of cancers. Curr Probl Cancer 2024; 48:101063. [PMID: 38330781 DOI: 10.1016/j.currproblcancer.2024.101063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/08/2024] [Accepted: 01/23/2024] [Indexed: 02/10/2024]
Abstract
Currently, several options are available for the prevention and treatment of cancers; however, many limitations remain with these approaches. Recently, antioxidants have become important preventive and therapeutic alternatives with few adverse events and minimum cost. Coenzyme Q10 (CoQ10) is a naturally occurring component that performs an anticancer function by reducing oxidative stress. CoQ10 supplementation as an adjuvant therapy offers more progress in the elimination and development of cancers. This review aimed to critically assess and summarize the implication of CoQ10 in cancers, highlighting possible mechanisms, and future directions of research for the standardization of the current regimen for cancer prevention and treatment.
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Affiliation(s)
| | - Mehrdad Rabiee Rad
- School of Medicine, Isfahan University of Medical Science, Isfahan, Iran
| | | | | | | | - Kiyan Heshmat-Ghahdarijani
- Heart Failure Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Shahid Rahmani Alley, Moshtagh Sevom St., Isfahan, Iran.
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2
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A Comparative Study on the Reduction Modes for Quinone to Determine Ubiquinone by HPLC with Luminol Chemiluminescence Detection Based on the Redox Reaction. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010096. [PMID: 36615292 PMCID: PMC9822024 DOI: 10.3390/molecules28010096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/14/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Ubiquinone (UQ) is considered one of the important biologically active molecules in the human body. Ubiquinone determination in human plasma is important for the investigation of its bioavailability, and also its plasma level is considered an indicator of many illnesses. We have previously developed sensitive and selective chemiluminescence (CL) method for the determination of UQ in human plasma based on its redox cycle with dithiothreitol (DTT) and luminol. However, this method requires an additional pump to deliver DTT as a post-column reagent and has the problems of high DTT consumption and broadening of the UQ peak due to online mixing with DTT. Herein, an HPLC (high-performance liquid chromatography) system equipped with two types of online reduction systems (electrolytic flow cell or platinum catalyst-packed reduction column) that play the role of DTT was constructed to reduce reagent consumption and simplify the system. The newly proposed two methods were carefully optimized and validated, and the analytical performance for UQ determination was compared with that of the conventional DTT method. Among the tested systems, the electrolytic reduction system showed ten times higher sensitivity than the DTT method, with a limit of detection of 3.1 nM. In addition, it showed a better chromatographic performance and the best peak shape with a number of theoretical plates exceeding 6500. Consequently, it was applied to the determination of UQ in healthy human plasma, and it showed good recovery (≥97.9%) and reliable precision (≤6.8%) without any interference from plasma components.
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Palacka P, Kucharská J, Obertová J, Rejleková K, Slopovský J, Mego M, Světlovská D, Kollárik B, Mardiak J, Gvozdjáková A. Changes in CoQ 10/Lipids Ratio, Oxidative Stress, and Coenzyme Q 10 during First-Line Cisplatin-Based Chemotherapy in Patients with Metastatic Urothelial Carcinoma (mUC). Int J Mol Sci 2022; 23:ijms232113123. [PMID: 36361913 PMCID: PMC9657286 DOI: 10.3390/ijms232113123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 11/07/2022] Open
Abstract
Oxidative stress plays an important role in cancer pathogenesis, and thiobarbituric acid-reactive substance level (TBARS)—a parameter of lipid peroxidation—has prognostic significance in chemotherapy-naive patients with metastatic urothelial carcinoma (mUC). However, the effect of cisplatin (CDDP)-based chemotherapy on oxidative stress, coenzyme Q10, and antioxidants remains unknown. The objective of this prospective study was to determine possible changes in the CoQ10 (coenzyme Q10)/lipids ratio, antioxidants (α-tocopherol, γ-tocopherol, β-carotene, CoQ10), total antioxidant status (TAS), and TBARS in plasma at baseline and during first-line chemotherapy based on CDDP in mUC subjects. In this prospective study, 63 consecutive patients were enrolled. The median age was 66 years (range 39−84), performance status according to the Eastern Cooperative Oncology Group (ECOG) was 2 in 7 subjects (11.1%), and visceral metastases were present in 31 (49.2%) patients. Plasma antioxidants were determined by HPLC and TAS and TBARS spectrophotometrically. After two courses of chemotherapy, we recorded significant enhancements compared to baseline for total cholesterol (p < 0.0216), very low-density lipoprotein (VLDL) cholesterol (p < 0.002), triacylglycerols (p < 0.0083), α-tocopherol (p < 0.0044), and coenzyme Q10-TOTAL (p < 0.0001). Ratios of CoQ10/total cholesterol, CoQ10/HDL-cholesterol, and CoQ10/LDL-cholesterol increased during chemotherapy vs. baseline (p < 0.0048, p < 0.0101, p < 0.0032, respectively), while plasma TBARS declined (p < 0.0004). The stimulation of antioxidants could be part of the defense mechanism during CDDP treatment. The increased index of CoQ10-TOTAL/lipids could reflect the effect of CDDP protecting lipoproteins from peroxidation.
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Affiliation(s)
- Patrik Palacka
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
- Correspondence:
| | - Jarmila Kucharská
- Pharmacobiochemical Laboratory of the 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, 813 72 Bratislava, Slovakia
| | - Jana Obertová
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Katarína Rejleková
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Ján Slopovský
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Michal Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Daniela Světlovská
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Boris Kollárik
- Department of Urology, University Hospital in Bratislava, 851 07 Bratislava, Slovakia
| | - Jozef Mardiak
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Anna Gvozdjáková
- Pharmacobiochemical Laboratory of the 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, 813 72 Bratislava, Slovakia
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4
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Wolf CPJG, Rachow T, Ernst T, Hochhaus A, Zomorodbakhsch B, Foller S, Rengsberger M, Hartmann M, Huebner J. Complementary and alternative medicine (CAM) supplements in cancer outpatients: analyses of usage and of interaction risks with cancer treatment. J Cancer Res Clin Oncol 2021; 148:1123-1135. [PMID: 34228225 PMCID: PMC9016053 DOI: 10.1007/s00432-021-03675-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/27/2021] [Indexed: 11/25/2022]
Abstract
Purpose The aim of our study was to analyze the use of complementary and alternative medicine (CAM) supplements, identify possible predictors, and analyze and compile potential interactions of CAM supplements with conventional cancer therapy. Methods We included outpatient cancer patients treated at a German university hospital in March or April 2020. Information was obtained from questionnaires and patient records. CAM–drug interactions were identified based on literature research for each active ingredient of the supplements consumed by the patients. Results 37.4% of a total of 115 patients consumed CAM supplements. Potential interactions with conventional cancer treatment were identified in 51.2% of these patients. All types of CAM supplements were revealed to be a potential source for interactions: vitamins, minerals, food and plant extracts, and other processed CAM substances. Younger age (< 62 years) (p = 0.020, φc = 0.229) and duration of individual cancer history of more than 1 year (p = 0.006, φc = 0.264) were associated with increased likelihood of CAM supplement use. A wide range of different CAM supplement interactions were reviewed: effects of antioxidants, cytochrome (CYP) interactions, and specific agonistic or antagonistic effects with cancer treatment. Conclusion The interaction risks of conventional cancer therapy with over-the-counter CAM supplements seem to be underestimated. Supplements without medical indication, as well as overdoses, should be avoided, especially in cancer patients. To increase patient safety, physicians should address the risks of interactions in physician–patient communication, document the use of CAM supplements in patient records, and check for interactions.
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Affiliation(s)
- Clemens P J G Wolf
- Klinik für Innere Medizin II, Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany.
| | - Tobias Rachow
- Klinik für Innere Medizin II, Hämatologie und Internistische Onkologie, Pneumologie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Thomas Ernst
- Klinik für Innere Medizin II, Hämatologie und Internistische Onkologie, Konservative Tagesklinik des UniversitätsTumorCentrums (UTC), Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Andreas Hochhaus
- Klinik für Innere Medizin II, Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | | | - Susan Foller
- Klinik für Urologie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Matthias Rengsberger
- Klinik und Poliklinik für Frauenheilkunde und Fortpflanzungsmedizin, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Michael Hartmann
- Apotheke des Universitätsklinikums, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Jutta Huebner
- Klinik für Innere Medizin II, Hämatologie und Internistische Onkologie, Integrative Onkologie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
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Testai L, Martelli A, Flori L, Cicero AFG, Colletti A. Coenzyme Q 10: Clinical Applications beyond Cardiovascular Diseases. Nutrients 2021; 13:1697. [PMID: 34067632 PMCID: PMC8156424 DOI: 10.3390/nu13051697] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/29/2021] [Accepted: 05/14/2021] [Indexed: 02/07/2023] Open
Abstract
Coenzyme Q10 (CoQ10) is an essential cofactor in oxidative phosphorylation (OXPHOS), present in mitochondria and cell membranes in reduced and oxidized forms. Acting as an energy transfer molecule, it occurs in particularly high levels in the liver, heart, and kidneys. CoQ10 is also an anti-inflammatory and antioxidant agent able to prevent the damage induced by free radicals and the activation of inflammatory signaling pathways. In this context, several studies have shown the possible inverse correlation between the blood levels of CoQ10 and some disease conditions. Interestingly, beyond cardiovascular diseases, CoQ10 is involved also in neuronal and muscular degenerative diseases, in migraine and in cancer; therefore, the supplementation with CoQ10 could represent a viable option to prevent these and in some cases might be used as an adjuvant to conventional treatments. This review is aimed to summarize the clinical applications regarding the use of CoQ10 in migraine, neurodegenerative diseases (including Parkinson and Alzheimer diseases), cancer, or degenerative muscle disorders (such as multiple sclerosis and chronic fatigue syndrome), analyzing its effect on patients' health and quality of life.
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Affiliation(s)
- Lara Testai
- Department of Pharmacy, University of Pisa, 56120 Pisa, Italy; (A.M.); (L.F.)
- Interdepartmental Research Centre ‘‘Nutraceuticals and Food for Health (NUTRAFOOD)’’, University of Pisa, 56120 Pisa, Italy
- Interdepartmental Research Centre of Ageing, Biology and Pathology, University of Pisa, 56120 Pisa, Italy
| | - Alma Martelli
- Department of Pharmacy, University of Pisa, 56120 Pisa, Italy; (A.M.); (L.F.)
- Interdepartmental Research Centre ‘‘Nutraceuticals and Food for Health (NUTRAFOOD)’’, University of Pisa, 56120 Pisa, Italy
- Interdepartmental Research Centre of Ageing, Biology and Pathology, University of Pisa, 56120 Pisa, Italy
| | - Lorenzo Flori
- Department of Pharmacy, University of Pisa, 56120 Pisa, Italy; (A.M.); (L.F.)
| | - Arrigo F. G. Cicero
- Medical and Surgical Sciences Department, University of Bologna, 40138 Bologna, Italy;
- Italian Nutraceutical Society (SINut), 40138 Bologna, Italy;
| | - Alessandro Colletti
- Italian Nutraceutical Society (SINut), 40138 Bologna, Italy;
- Department of Science and Drug Technology, University of Turin, 10125 Turin, Italy
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Shidal C, Yoon HS, Zheng W, Wu J, Franke AA, Blot WJ, Shu XO, Cai Q. Prospective study of plasma levels of coenzyme Q10 and lung cancer risk in a low-income population in the Southeastern United States. Cancer Med 2021; 10:1439-1447. [PMID: 33547884 PMCID: PMC7926017 DOI: 10.1002/cam4.3637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/11/2020] [Accepted: 11/16/2020] [Indexed: 12/12/2022] Open
Abstract
Background Coenzyme Q10 (CoQ10) is a ubiquitous molecule in living organisms serving as a cofactor in energy production. Epidemiological studies have reported low CoQ10 levels being associated with an increased risk of various cancers. We conducted the first study to evaluate the association of CoQ10 concentrations with lung cancer risk. Methods A nested case‐control study including 201 lung cancer cases and 395 matched controls from the Southern Community Cohort Study was conducted. Plasma CoQ10 levels were measured using high‐performance liquid chromatography with photo‐diode array detection. Conditional logistic regression models were applied to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the association between plasma CoQ10 levels and lung cancer risk. Results Plasma CoQ10 concentration was inversely associated with the risk of lung cancer. After adjusting for age, sex, race, and socioeconomic status, the OR (95% CI) comparing the third to first tertile was 0.57 (0.36–0.91, P for trend = 0.02). Further adjustments for smoking, alcohol, chronic obstructive pulmonary disease, and body mass index attenuated the point estimate slightly (OR = 0.60, 95% CI = 0.34–1.08, P for trend = 0.11), comparing third to first tertiles. Stratified analyses identified a significant inverse association between plasma CoQ10 levels and lung cancer risk in current smokers, but not in former/never smokers. The association was more evident in cases who were diagnosed within 1 year of blood draw than in cases diagnosed after 1 year. Conclusions Low plasma CoQ10 was significantly associated with increased lung cancer risk, particularly among current smokers. The stronger association seen shortly following the blood draw suggests that CoQ10 may be related to disease progression.
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Affiliation(s)
- Chris Shidal
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Hyung-Suk Yoon
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Jie Wu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | | | - William J Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
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7
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Hu C, Huang Y, Luo P, Yang Y. Effect of antioxidants coenzyme Q10 and β-carotene on the cytotoxicity of vemurafenib against human malignant melanoma. Oncol Lett 2021; 21:208. [PMID: 33574947 PMCID: PMC7816282 DOI: 10.3892/ol.2021.12469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 11/13/2020] [Indexed: 11/09/2022] Open
Abstract
Melanoma is a type of highly invasive skin cancer derived from melanocytes with poor prognosis. Vemurafenib (PLX4032) is a clinically approved targeted therapeutic for BRAF mutant melanoma that has a high therapeutic response rate and significantly prolongs the overall survival time of patients with melanoma. Antioxidants have been widely used as supplements for cancer prevention and for decreasing the side effects of cancer therapy. However, antioxidants can also protect cancer cells from oxidative stress and promote cancer growth and progression. The present study aimed to examine the effect of the antioxidants coenzyme Q10 (CoQ10) and β-carotene on melanoma cell growth and invasiveness and on the cytotoxicity of vemurafenib against both vemurafenib-sensitive (SK-MEL-28) and vemurafenib-resistant (A2058) human malignant melanoma cell lines. MTS assay and wound-healing assay demonstrated that CoQ10 alone significantly reduced the viability and migration of melanoma cells, respectively, and synergistically worked with vemurafenib to decrease the viability and migration of human melanoma cells. In contrast, MTS assay and flow cytometry revealed that β-carotene alone did not affect the viability and apoptosis induction of melanoma cells; however, it inhibited cell migration and invasiveness. Wound-healing and Transwell assay demonstrated that β-carotene alleviated the cytotoxicity of vemurafenib and mitigated the inhibitory effect of vemurafenib on cell migration and invasion. Both CoQ10 and β-carotene protected melanoma cells from undergoing apoptosis induced by vemurafenib. Immunoblotting demonstrated that β-carotene at physiological concentration worked synergistically with vemurafenib to suppress the Ras-Raf-Mek-Erk intracellular signaling pathway. The present study aimed to add to the evidence of the in vitro effects of CoQ10 and β-carotene on the antimelanoma effects of vemurafenib.
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Affiliation(s)
- Changkun Hu
- Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Yuan Huang
- Department of Hematopathology, Anqing Municipal Hospital, Anqing, Anhui 246004, P.R. China
| | - Peixiao Luo
- School of Natural Sciences, College of Science and Technology, Wenzhou Kean University, Wenzhou, Zhejiang 325035, P.R. China
| | - Yixin Yang
- School of Natural Sciences, College of Science and Technology, Wenzhou Kean University, Wenzhou, Zhejiang 325035, P.R. China.,School of Natural Sciences, The Dorothy and George Hennings College of Science, Mathematics and Technology, Kean University, Union, NJ 07083, USA
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8
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Arslanbaeva LR, Santoro MM. Adaptive redox homeostasis in cutaneous melanoma. Redox Biol 2020; 37:101753. [PMID: 33091721 PMCID: PMC7578258 DOI: 10.1016/j.redox.2020.101753] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/16/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023] Open
Abstract
Cutaneous melanoma is the most aggressive type of skin cancer. Although cutaneous melanoma accounts for a minority of all types of skin cancer, it causes the greatest number of skin cancer related deaths worldwide. Oxidative stress and redox homeostasis have been shown to be involved at each stage of a malignant melanocyte transformation, called melanomagenesis, as well as during drug resistance. Reactive oxygen species (ROS) play an important and diverse role that regulate many aspects of skin cell behaviors ranging from proliferation and stemness, to oxidative damage and cell death. On the other hand, antioxidants are associated with melanoma spread and metastasis. Overall, the contribution of redox homeostasis to melanoma development and progression is controversial and highly complex. The aim of this study is to examine the association between redox homeostasis and the melanomagenic process. To this purpose we are presenting what is currently known about the role of ROS in melanoma initiation and progression. In addition, we are discussing the role of antioxidant mechanisms during the spread of the disease and in cases of melanoma drug resistance. Although challenging, targeting redox homeostasis in melanoma progression remains to be a promising therapeutic approach, especially valid during melanoma drug resistance.
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Affiliation(s)
| | - Massimo M Santoro
- Department of Biology, University of Padua, 35131, Italy; Veneto Institute of Molecular Medicine (VIMM), Via Orus 2, 35129, Padua, Italy.
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Sguizzato M, Mariani P, Spinozzi F, Benedusi M, Cervellati F, Cortesi R, Drechsler M, Prieux R, Valacchi G, Esposito E. Ethosomes for Coenzyme Q10 Cutaneous Administration: From Design to 3D Skin Tissue Evaluation. Antioxidants (Basel) 2020; 9:E485. [PMID: 32503293 PMCID: PMC7346166 DOI: 10.3390/antiox9060485] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 12/13/2022] Open
Abstract
Ethosome represents a smart transdermal vehicle suitable for solubilization and cutaneous application of drugs. Coenzyme Q10 is an endogenous antioxidant whose supplementation can counteract many cutaneous disorders and pathologies. In this respect, the present study describes the production, characterization, and cutaneous protection of phosphatidylcholine based ethosomes as percutaneous delivery systems for coenzyme Q10. CoQ10 entrapment capacity in ethosomes was almost 100%, vesicles showed the typical 'fingerprint' structure, while mean diameters were around 270 nm, undergoing an 8% increase after 3 months from production. An ex-vivo study, conducted by transmission electron microscopy, could detect the uptake of ethosomes in human skin fibroblasts and the passage of the vesicles through 3D reconstituted human epidermis. Immunofluorescence analyses were carried on both on fibroblasts and 3D reconstituted human epidermis treated with ethosomes in the presence of H2O2 as oxidative stress challenger, evaluating 4-hydroxynonenal protein adducts which is as a reliable biomarker for oxidative damage. Notably, the pretreatment with CoQ10 loaded in ethosomes exerted a consistent protective effect against oxidative stress, in both models, fibroblasts and in reconstituted human epidermis respectively.
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Affiliation(s)
- Maddalena Sguizzato
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, I-44121 Ferrara, Italy;
| | - Paolo Mariani
- Department of Life and Environmental Sciences, Polytechnic University of Marche, I-60131 Ancona, Italy; (P.M.); (F.S.)
| | - Francesco Spinozzi
- Department of Life and Environmental Sciences, Polytechnic University of Marche, I-60131 Ancona, Italy; (P.M.); (F.S.)
| | - Mascia Benedusi
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, I-44121 Ferrara, Italy; (M.B.); (F.C.); (R.P.)
| | - Franco Cervellati
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, I-44121 Ferrara, Italy; (M.B.); (F.C.); (R.P.)
| | - Rita Cortesi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, I-44121 Ferrara, Italy;
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI) Keylab “Electron and Optical Microscopy”, University of Bayreuth, D-95440 Bayreuth, Germany;
| | - Roxane Prieux
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, I-44121 Ferrara, Italy; (M.B.); (F.C.); (R.P.)
| | - Giuseppe Valacchi
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, I-44121 Ferrara, Italy; (M.B.); (F.C.); (R.P.)
- Animal Science Dept., Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
- Department of Food and Nutrition, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul 130-701, Korea
| | - Elisabetta Esposito
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, I-44121 Ferrara, Italy;
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10
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Abdi S, Montazeri V, Garjani A, Shayanfar A, Pirouzpanah S. Coenzyme Q10 in association with metabolism-related AMPK/PFKFB3 and angiogenic VEGF/VEGFR2 genes in breast cancer patients. Mol Biol Rep 2020; 47:2459-2473. [DOI: 10.1007/s11033-020-05310-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 02/07/2020] [Indexed: 11/28/2022]
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11
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Arenas‐Jal M, Suñé‐Negre JM, García‐Montoya E. Coenzyme Q10 supplementation: Efficacy, safety, and formulation challenges. Compr Rev Food Sci Food Saf 2020; 19:574-594. [DOI: 10.1111/1541-4337.12539] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/26/2019] [Accepted: 01/03/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Marta Arenas‐Jal
- Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy and Food SciencesUniversity of Barcelona Barcelona Spain
| | - J. M. Suñé‐Negre
- Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy and Food SciencesUniversity of Barcelona Barcelona Spain
| | - Encarna García‐Montoya
- Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy and Food SciencesUniversity of Barcelona Barcelona Spain
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El-Attar E, Kamel A, Karmouty A, Wehida N, Nassra R, El Nemr M, Kandil NS. Assessment of Serum CoQ10 Levels and other Antioxidant Markers in Breast Cancer. Asian Pac J Cancer Prev 2020; 21:465-471. [PMID: 32102525 PMCID: PMC7332135 DOI: 10.31557/apjcp.2020.21.2.465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The balance of the oxidative state in the body is fundamental for the maintenance of homeostasis. It has been implicated in the onset and progression of several diseases including breast cancer. The way in which the Reactive Oxygen Species (ROS) / antioxidants balance leads to or responds to disease is still controversial. In this study, TAC is used as a reference for the total antioxidant power of the body and Coenzyme Q10 (CoQ10) for its vital importance in cellular antioxidant action and being the only lipid soluble antioxidant synthesized endogenously. Copper and zinc were measured as trace elements reflecting the antioxidant micronutrient profile of the body. METHODS After approval of the ethical committee, 60 recently diagnosed non-intervened breast cancer patients were recruited from the Medical Research Institute hospital, Alexandria University along with 20 apparently healthy volunteers as control group. Full patient history was taken including breastfeeding history, parity, hormone replacement therapy use, body mass index, pathological examination, metastatic work up results, past medical history and drug use. CA 15-3 and laboratory investigations evaluating blood glucose, kidney and liver functions were performed. Q10 levels were measured by HPLC using a kit from Recipe®. TAC was assayed spectrophotometrically (Biodiagnostics®). Copper and Zinc levels were determined by inductively coupled plasma-optical emission spectrometry. RESULTS There was a statistically significant increase in the CoQ10, TAC and copper levels in the breast cancer group when compared to the control group. Zinc showed no statistically significant difference between the studied groups. CONCLUSION Inspite of the fact that a high antioxidant level is usually considered as a favourable state, TAC, CoQ10 and copper levels showed significantly higher levels in the breast cancer group when compared to the control group. It is worth mentioning that the cancer group were all recently diagnosed, non-intervened and showed no signs of metastasis. It is still unclear whether the increased antioxidant levels offer a selective growth advantage to tumor cells over their surrounding normal cells or serve as a protective measure by the body in an attempt to correct the assault triggered by the ROS.
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Affiliation(s)
- Eman El-Attar
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Amel Kamel
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Ahmed Karmouty
- Department of Experimental and Clinical Surgery, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Nadine Wehida
- Department of Pharmacology and Therapeutics, Pharos University in Alexandria, Alexandria, Egypt
| | - Rasha Nassra
- Department of Medical Biochemistry, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Mohamed El Nemr
- Department of Cancer Management and Research, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Noha Said Kandil
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
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Hu L, Chen Q, Wang Y, Zhang N, Meng P, Liu T, Bu Y. Sp1 Mediates the Constitutive Expression and Repression of the PDSS2 Gene in Lung Cancer Cells. Genes (Basel) 2019; 10:E977. [PMID: 31783675 PMCID: PMC6947312 DOI: 10.3390/genes10120977] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/14/2019] [Accepted: 11/19/2019] [Indexed: 01/29/2023] Open
Abstract
Prenyl diphosphate synthase subunit 2 (PDSS2) is the first key enzyme in the CoQ10 biosynthesis pathway, and contributes to various metabolic and nephritic diseases. It has been reported that PDSS2 is downregulated in several types of tumors and acts as a potential tumor suppressor gene to inhibit the proliferation and migration of cancer cells. However, the regulatory mechanism of PDSS2 expression remains elusive. In the present study, we first identified and characterized the PDSS2 promoter region. We established four different luciferase reporter constructs which mainly cover the 2 kb region upstream of the PDSS2 gene transcription initiation site. Series luciferase reporter assay demonstrated that all four constructs have prominent promoter activity, and the core promoter of PDSS2 is mainly located within the 202 bp region near its transcription initiation site. Transcription factor binding site analysis revealed that the PDSS2 promoter contains binding sites for canonical transcription factors such as Sp1 and GATA-1. Overexpression of Sp1 significantly inhibited PDSS2 promoter activity, as well as its endogenous expression, at both mRNA and protein levels in lung cancer cells. Site-directed mutagenesis assay further confirmed that the Sp1 binding sites are essential for proximal prompter activity of PDSS2. Consistently, a selective Sp1 inhibitor, mithramycin A, treatment repressed the PDSS2 promoter activity, as well as its endogenous expression. Chromatin immunoprecipitation (ChIP) assay revealed that Sp1 binds to the PDSS2 promoter in vivo. Of note, the expression of Sp1 and PDSS2 are negatively correlated, and higher Sp1 expression with low PDSS2 expression is significantly associated with poor prognosis in lung cancer. Taken together, our results strongly suggest the essential role of Sp1 in maintaining the basic constitutive expression of PDSS2, and the pathogenic implication of Sp1-mediated PDSS2 transcriptional repression in lung cancer cells.
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Affiliation(s)
- Lanyue Hu
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Quanmei Chen
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Yitao Wang
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Na Zhang
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Peixin Meng
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Tong Liu
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
| | - Youquan Bu
- Department of Biochemistry and Molecular Biology, Chongqing Medical University, Chongqing 400016, China; (L.H.); (Q.C.); (Y.W.); (N.Z.); (P.M.); (T.L.)
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
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14
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Liu YM, Chan YL, Wu TH, Li TL, Hsia S, Chiu YH, Wu CJ. Antitumor, Inhibition of Metastasis and Radiosensitizing Effects of Total Nutrition Formula on Lewis Tumor-Bearing Mice. Nutrients 2019; 11:nu11081944. [PMID: 31426614 PMCID: PMC6723674 DOI: 10.3390/nu11081944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/14/2019] [Accepted: 08/15/2019] [Indexed: 12/14/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) causes high mortality. Radiotherapy is an induction regimen generally applied to patients with NSCLC. In view of therapeutic efficacy, the outcome is not appealing in addition to bringing about unwanted side effects. Total nutrition is a new trend in cancer therapy, which benefits cancer patients under radiotherapy. Male C57BL/6JNarl mice were experimentally divided into five groups: one control group, one T group (borne with Lewis lung carcinoma but no treatment), and three Lewis lung carcinoma-bearing groups administrated with a total nutrition formula (T + TNuF group), a local radiotherapy plus daily 3 Gy in three fractions (T + R group), or a combination TNuF and radiotherapy (T + R + TNuF group). These mice were assessed for their mean tumor volumes, cachectic symptoms and tumor metastasis. TNuF administration significantly suppressed tumor growth and activated apoptotic cell death in NSCLC-bearing mice under radiation. The body-weight gain was increased, while the radiation-induced cachexia was alleviated. Analysis of mechanisms suggests that TNuF downregulates EGFR and VEGF signaling pathways, inhibiting angiogenesis and metastasis. In light of radiation-induced tumor cell death, mitigation of radiation-induced cachexia and inhibition of tumor cell distant metastasis, the combination of TNuF and radiotherapy synergistically downregulates EGFR and VEGF signaling in NSCLC-bearing mice.
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Affiliation(s)
- Yu-Ming Liu
- Division of Radiation Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- School of Medicine, National Yang Ming University, Taipei 11221, Taiwan
| | - Yi-Lin Chan
- Department of Life Science, Chinese Culture University, Taipei 11114, Taiwan
| | - Tsung-Han Wu
- Department of Food Science and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
- Division of Hemato-oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33320, Taiwan
| | - Tsung-Lin Li
- Genomics Research Center, Academia Sinica, Taipei 11529, Taiwan
| | - Simon Hsia
- Taiwan Nutraceutical Association, Taipei 10596, Taiwan
| | - Yi-Han Chiu
- Department of Nursing, St. Mary's Junior College of Medicine, Nursing and Management, Yilan 26647, Taiwan.
- Institute of Long-Term Care, Mackay Medical College, New Taipei City 25245, Taiwan.
| | - Chang-Jer Wu
- Department of Food Science and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
- Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan.
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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15
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Role of coenzymes in cancer metabolism. Semin Cell Dev Biol 2019; 98:44-53. [PMID: 31176736 DOI: 10.1016/j.semcdb.2019.05.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 01/18/2023]
Abstract
Cancer is a heterogeneous set of diseases characterized by the rewiring of cellular signaling and the reprogramming of metabolic pathways to sustain growth and proliferation. In past decades, studies were focused primarily on the genetic complexity of cancer. Recently, increasing number of studies have discovered several mutations among metabolic enzymes in different tumor cells. Most of the enzymes are regulated by coenzymes, organic cofactors, that function as intermediate carrier of electrons or functional groups that are transferred during the reaction. However, the precise role of cofactors is not well elucidated. In this review, we discuss several metabolic enzymes associated to cancer metabolism rewiring, whose inhibition may represent a therapeutic target. Such enzymes, upon expression or inhibition, may impact also the coenzymes levels, but only in few cases, it was possible to direct correlate coenzymes changes with a specific enzyme. In addition, we also summarize an up-to-date information on biological role of some coenzymes, preclinical and clinical studies, that have been carried out in various cancers and their outputs.
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16
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Li Y, Lin S, Li L, Tang Z, Hu Y, Ban X, Zeng T, Zhou Y, Zhu Y, Gao S, Deng W, Zhang X, Xie D, Yuan Y, Huang P, Li J, Cai Z, Guan XY. PDSS2 Deficiency Induces Hepatocarcinogenesis by Decreasing Mitochondrial Respiration and Reprogramming Glucose Metabolism. Cancer Res 2018; 78:4471-4481. [PMID: 29967258 DOI: 10.1158/0008-5472.can-17-2172] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 12/12/2017] [Accepted: 06/19/2018] [Indexed: 11/16/2022]
Abstract
Glucose metabolic reprogramming from oxidative phosphorylation to glycolysis is one of the hallmarks of cancer development. Coenzyme Q10 (CoQ10) is essential for electron transport in the mitochondrial respiratory chain and for antioxidant defense. Here, we investigated the role of a key factor in CoQ10 synthesis, prenyldiphosphate synthase subunit 2 (PDSS2), in hepatocellular carcinoma (HCC) tumorigenesis. PDSS2 was frequently downregulated in HCC tissues and was significantly associated with poorer HCC prognosis (P = 0.027). PDSS2 downregulation was a prognostic factor independent of T status and stage (P = 0.028). Downregulation of CoQ10 was significantly correlated with downregulation of PDSS2 in HCC tumor tissues (R = 0.414; P < 0.001). Of the six different splicing isoforms of PDSS2, the five variants other than full-length PDSS2 showed loss of function in HCC. Reintroduction of full-length PDSS2 into HCC cells increased CoQ10 and mitochondrial electron transport complex I activity and subsequently induced a metabolic shift from aerobic glycolysis to mitochondrial respiration in cells. Reintroduction of PDSS2 also inhibited foci formation, colony formation in soft agar, and tumor formation in nude mice. Knockdown of PDSS2 induced chromosomal instability in the MIHA immortalized human liver cell line. Furthermore, knockdown of PDSS2 in MIHA induced malignant transformation. Overall, our findings indicate that PDSS2 deficiency might be a novel driving factor in HCC development.Significance: Downregulation of PDSS2 is a driving factor in hepatocellular carcinoma tumorigenesis. Cancer Res; 78(16); 4471-81. ©2018 AACR.
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Affiliation(s)
- Yan Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Shuhai Lin
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, China
| | - Lei Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zhi Tang
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, China
| | - Yumin Hu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiaojiao Ban
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Tingting Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ying Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yinghui Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Song Gao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wen Deng
- Department of Anatomy, The University of Hong Kong, Hong Kong, China
| | - Xiaoshi Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Dan Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yunfei Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Peng Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jinjun Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiaotong University, Shanghai, China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, China
| | - Xin-Yuan Guan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China. .,Department of Clinical Oncology, The University of Hong Kong, Hong Kong, China
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Clark YY, Wold LE, Szalacha LA, McCarthy DO. Ubiquinol reduces muscle wasting but not fatigue in tumor-bearing mice. Biol Res Nurs 2014; 17:321-9. [PMID: 25230747 DOI: 10.1177/1099800414543822] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE Fatigue is the most common and distressing symptom reported by cancer patients during and after treatment. Tumor growth increases oxidative stress and cytokine production, which causes skeletal muscle wasting and cardiac dysfunction. The purpose of this study was to determine whether treatment with the antioxidant ubiquinol improves muscle mass, cardiac function, and behavioral measures of fatigue in tumor-bearing mice. METHOD Adult female mice were inoculated with colon26 tumor cells. Half the control and tumor-bearing mice were administered ubiquinol (500 mg/kg/day) in their drinking water. Voluntary wheel running (i.e., voluntary running activity [VRA]) and grip strength were measured at Days 0, 8, 14, and 17 of tumor growth. Cardiac function was measured using echocardiography on Day 18 or 19. Biomarkers of inflammation, protein degradation, and oxidative stress were measured in serum and heart and gastrocnemius tissue. RESULTS VRA and grip strength progressively declined in tumor-bearing mice. Muscle mass and myocardial diastolic function were decreased, and expression of proinflammatory cytokines was increased in serum and muscle and heart tissue on Day 19 of tumor growth. Oxidative stress was present only in the heart, while biomarkers of protein degradation were increased only in the gastrocnemius muscle. Ubiquinol increased muscle mass in the tumor-bearing and control animals but had no effect on the expression of biomarkers of inflammation, protein degradation, or oxidative stress or on behavioral measures of fatigue.
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Affiliation(s)
- Yvonne Y Clark
- Pain Evaluation and Management Center of Ohio, Dayton, OH, USA
| | - Loren E Wold
- College of Nursing, The Ohio State University, Columbus, OH, USA
| | - Laura A Szalacha
- College of Nursing, The Ohio State University, Columbus, OH, USA
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18
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Garrido-Maraver J, Cordero MD, Oropesa-Ávila M, Fernández Vega A, de la Mata M, Delgado Pavón A, de Miguel M, Pérez Calero C, Villanueva Paz M, Cotán D, Sánchez-Alcázar JA. Coenzyme q10 therapy. Mol Syndromol 2014; 5:187-97. [PMID: 25126052 DOI: 10.1159/000360101] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
For a number of years, coenzyme Q10 (CoQ10) was known for its key role in mitochondrial bioenergetics; later studies demonstrated its presence in other subcellular fractions and in blood plasma, and extensively investigated its antioxidant role. These 2 functions constitute the basis for supporting the clinical use of CoQ10. Also, at the inner mitochondrial membrane level, CoQ10 is recognized as an obligatory cofactor for the function of uncoupling proteins and a modulator of the mitochondrial transition pore. Furthermore, recent data indicate that CoQ10 affects the expression of genes involved in human cell signaling, metabolism and transport, and some of the effects of CoQ10 supplementation may be due to this property. CoQ10 deficiencies are due to autosomal recessive mutations, mitochondrial diseases, aging-related oxidative stress and carcinogenesis processes, and also statin treatment. Many neurodegenerative disorders, diabetes, cancer, and muscular and cardiovascular diseases have been associated with low CoQ10 levels as well as different ataxias and encephalomyopathies. CoQ10 treatment does not cause serious adverse effects in humans and new formulations have been developed that increase CoQ10 absorption and tissue distribution. Oral administration of CoQ10 is a frequent antioxidant strategy in many diseases that may provide a significant symptomatic benefit.
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Affiliation(s)
- Juan Garrido-Maraver
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Mario D Cordero
- Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain ; Departamento de Citología e Histología Normal y Patológica, Facultad de Medicina, Universidad de Sevilla, Sevilla, Spain
| | - Manuel Oropesa-Ávila
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Alejandro Fernández Vega
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Mario de la Mata
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Ana Delgado Pavón
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Manuel de Miguel
- Departamento de Citología e Histología Normal y Patológica, Facultad de Medicina, Universidad de Sevilla, Sevilla, Spain
| | - Carmen Pérez Calero
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Marina Villanueva Paz
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - David Cotán
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - José A Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain ; Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, Universidad Pablo de Olavide-Consejo Superior de Investigaciones Científicas, Sevilla, Spain
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A germline missense mutation in COQ6 is associated with susceptibility to familial schwannomatosis. Genet Med 2014; 16:787-92. [PMID: 24763291 PMCID: PMC4189385 DOI: 10.1038/gim.2014.39] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 03/04/2014] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Schwannomatosis, a subtype of neurofibromatosis, is characterized by multiple benign, nonvestibular, nonintradermal schwannomas. Although the tumor suppressor SMARCB1 gene has been frequently identified as the underlying genetic cause of half of familial and ~10% of sporadic schwannomatosis, for most other cases, further causative genes remain to be discovered. Herein, we characterize the genome of a schwannomatosis family without constitutional inactivation of the SMARCB1 gene to explore novel genomic alterations predisposing individuals to the familial disease. METHODS We performed whole-genome/exome sequencing on genomic DNA of both schwannomatosis-affected and normal members of the family. RESULTS We identified a novel missense mutation (p.Asp208His; c.622G>C) in the coenzyme Q10 (CoQ10) biosynthesis monooxygenase 6 gene (COQ6) in schwannomatosis-affected members. The deleterious effects of the COQ6 mutations were validated by their lack of complementation in a coq6-deficient yeast mutant. Our study further indicated that the resultant haploinsufficiency of COQ6 might lead to CoQ10 deficiency and chronic overproduction of reactive oxygen species in Schwann cells. CONCLUSION Although the exact oncogenetic mechanisms in this schwannomatosis family remain to be elucidated, our data strongly indicate a probable role of COQ6 mutation and CoQ10 deficiency in the development of familial schwannomatosis.Genet Med 16 10, 787-792.
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20
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Akbas HS, Timur M, Ozben T. Concurrent use of antioxidants in cancer therapy: an update. Expert Rev Clin Immunol 2014; 2:931-9. [DOI: 10.1586/1744666x.2.6.931] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Berber AA, Celik M, Aksoy H. Genotoxicity evaluation of HMG CoA reductase inhibitor rosuvastatin. Drug Chem Toxicol 2013; 37:316-21. [PMID: 24245812 DOI: 10.3109/01480545.2013.851692] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The genotoxic potential of rosuvastatin as one of the statin drugs was assessed by chromosomal aberrations (CAs), micronucleus (MN) and DNA damage by comet assay in the human peripheral blood lymphocytes. Rosuvastatin was used at concentrations of 0.0625, 0.125, 0.25, 0.5 and 1 µg/mL for these in vitro assays. In all assays, a negative and positive control were also included. CA frequencies were significantly increased in all concentrations at 24 hours and significantly increased in all concentrations except 0.0625 µg/mL at 48 hours, compared to the negative control. Rosuvastatin has a decreased mitotic index (MI) at 0.5- and 1-µg/mL concentrations at 24 hours and at 0.25, 0.5 and 1 µg/mL at 48 hours. A significant increase was observed for induction of MN in all treatments, compared to the negative control. Cytokinesis-block proliferation indices were not affected by treatments with rosuvastatin. In the comet assay, significant increases in comet tail length and tail moment were observed at 0.0625-, 0.5- and 1-µg/mL concentrations. Comet intensity was significantly increased in all concentrations except 0.0625 µg/mL. According to these results, rosuvastatin is cytotoxic and clastogenic/aneugenic in human peripheral lymphocytes. Further studies should be conducted in other test systems to evaluate the full genotoxic potential of rosuvastatin.
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Affiliation(s)
- Ahmet Ali Berber
- Department of Biology, Faculty of Art and Sciences, Sakarya University , Sakarya , Turkey and
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22
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Carvalho TC, McCook JP, Narain NR, McConville JT. Development and characterization of phospholipid-stabilized submicron aqueous dispersions of coenzyme Q₁₀ presenting continuous vibrating-mesh nebulization performance. J Liposome Res 2013; 23:276-90. [PMID: 23772691 DOI: 10.3109/08982104.2013.796976] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Coenzyme Q₁₀ (CoQ₁₀) is a poorly-water soluble compound that is being investigated for the treatment of carcinomas. The aim of this research was to develop a suitable formulation for pulmonary delivery of this anticancer agent. An appropriate selection of excipients (phospholipids) and a suitable device (Aeroneb Pro® vibrating-mesh nebulizer) were selected initially after reviewing the literature. After characterization of the bulk drug, a feasible manufacturing process was selected to obtain small particle size dispersions of CoQ₁₀. Following selection of an appropriate process, the parameters affecting drug particle size were studied. Using LD and gravimetrical analysis, nebulization was evaluated to assess the performance of the inhalation system triad: drug-excipients-device. CoQ₁₀ powder studied was crystalline with a melting point approximately at 51 °C and with a particle size of 30 µm. Microfluidization was found to be a suitable method to prepare submicron drug particles in aqueous dispersions. Increasing microfluidization processing to more than 50 passes did not provide further particle downsizing for both soya phosphatidylcholine (lecithin) and dipalmitoyl phosphatidylcholine (DPPC) dispersions of CoQ₁₀, presenting Z-average values of approximately 130 and 70 nm, respectively. Nebulization performance of lecithin-stabilized CoQ₁₀ dispersions varied according to number of passes in the microfluidizer. Formulations processed with 10 passes presented steadier nebulization over time and different rheological behavior compared to those processed with 30 or 50 passes. In conclusion, aqueous dispersions of CoQ₁₀ were adequately produced using a microfluidizer with characteristics that were suitable for pulmonary delivery with an Aeroneb Pro® nebulizer. Furthermore, the rheology of these dispersions appeared to play a significant role in the aerosol generation from the active vibrating-mesh nebulizer used.
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Affiliation(s)
- Thiago C Carvalho
- College of Pharmacy, Division of Pharmaceutics, The University of Texas at Austin , Austin, TX , USA
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23
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Cooney RV, Chai W, Franke AA, Wilkens LR, Kolonel LN, Le Marchand L. C-reactive protein, lipid-soluble micronutrients, and survival in colorectal cancer patients. Cancer Epidemiol Biomarkers Prev 2013; 22:1278-88. [PMID: 23677577 DOI: 10.1158/1055-9965.epi-13-0199] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Identification of biomarkers associated with survival in patients with cancer is important for elucidating the underlying mechanisms of cancer progression and identifying possible interventions to reduce cancer morbidity and mortality. METHODS Using stored patient plasma samples from a multiethnic population-based case-control study of invasive colorectal cancer, we measured posttreatment blood levels of C-reactive protein (CRP) and lipid-soluble micronutrients. Patients (n = 368) were followed after phlebotomy (mean of 8 years), during which time 47% died (25% colorectal cancer specific). HRs were estimated by Cox proportional hazards regression with adjustment for stage, age at diagnosis, ethnicity, sex, smoking status, and month of blood draw. RESULTS A positive association with overall risk of death was observed for CRP [HR for highest vs. lowest quintile: 1.80; 95% confidence interval (CI), 1.07-3.04; Ptrend = 0.01], whereas inverse associations were generally observed for retinol and carotenoids (HRs for overall risk of death for the highest quintile ranging from 0.5-0.8); these associations were significant for retinol (Ptrend = 0.0002), α-carotene (Ptrend = 0.02), and total carotenoids (Ptrend = 0.02) and were generally consistent across subgroups (sex, ethnicity, cancer anatomical subtype, and stage). HRs for retinol and carotenoids were attenuated somewhat after adjustment for CRP. Similar trends for CRP were observed for colorectal cancer-specific deaths (HR for highest vs. lowest tertile: 2.06; 95% CI, 1.18-3.61; Ptrend = 0.01) as for deaths from all other causes (Pheterogeneity = 0.78). CONCLUSIONS These observations are consistent with a direct relationship between circulating CRP and overall survival among patients with colorectal cancer. IMPACT These results, if reproduced, suggest that reduction of inflammation should be explored as a potential complementary treatment strategy.
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Affiliation(s)
- Robert V Cooney
- Department of Public Health Sciences and Epidemiology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96822, USA.
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24
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Lesser GJ, Case D, Stark N, Williford S, Giguere J, Garino LA, Naughton MJ, Vitolins MZ, Lively MO, Shaw EG. A randomized, double-blind, placebo-controlled study of oral coenzyme Q10 to relieve self-reported treatment-related fatigue in newly diagnosed patients with breast cancer. THE JOURNAL OF SUPPORTIVE ONCOLOGY 2013; 11:31-42. [PMID: 22682875 PMCID: PMC3501550 DOI: 10.1016/j.suponc.2012.03.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 03/16/2012] [Accepted: 03/18/2012] [Indexed: 02/05/2023]
Abstract
BACKGROUND Coenzyme Q10 (CoQ10) is a common antioxidant supplement with known cardioprotective effects and potential anticancer benefits. OBJECTIVES We performed a randomized, double-blind, placebo-controlled study of oral CoQ10 in female breast cancer patients with the primary objective of determining CoQ10's effects on self-reported fatigue, depression, and quality of life (QOL). Methods Eligible women with newly diagnosed breast cancer and planned adjuvant chemotherapy were randomized to oral supplements of 300 mg CoQ10 or placebo, each combined with 300 IU vitamin E, divided into 3 daily doses. Treatment was continued for 24 weeks. Blood tests, QOL measures, and levels of plasma CoQ10 and vitamin E were obtained at baseline and at 8, 16, and 24 weeks. Mixed-effects models were used to assess treatment differences in outcomes over time. RESULTS Between September 2004 and March 2009, 236 women were enrolled. Treatment arms were well balanced with respect to age (range, 28-85 years), pathologic stage (stage 0, 91%; stage 1, 8%; stage II, 1%), ethnicity (white, 87%; black, 11%; Hispanic, 2%), and planned therapy. Baseline CoQ10 levels in the CoQ10 and placebo arms were 0.70 and 0.73 microg/mL, respectively; the 24-week CoQ10 levels were 1.83 and 0.79 microg/mL, respectively. There were no significant differences between the CoQ10 and placebo arms at 24 weeks for scores on the Profile of Mood States-Fatigue questionnaire (least squares means, 7.08 vs 8.24, P = .257), the Functional Assessment of Chronic Illness Therapy-Fatigue tool (37.6 vs 37.6, P = .965), the Functional Assessment of Cancer Therapy-Breast Cancer instrument (111.9 vs 110.4, P = .577), or the Center for Epidemiologic Studies-Depression scale (11.6 vs 12.3, P = .632). CONCLUSIONS Supplementation with conventional doses of CoQ10 led to sustained increases in plasma CoQ10 levels but did not result in improved self-reported fatigue or QOL after 24 weeks of treatment.
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Affiliation(s)
- Glenn J Lesser
- Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA.
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25
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Thornthwaite JT, Shah HR, Shah P, Peeples WC, Respess H. The formulation for cancer prevention & therapy. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/abc.2013.33040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Cooney RV, Dai Q, Gao YT, Chow WH, Franke AA, Shu XO, Li H, Ji B, Cai Q, Chai W, Zheng W. Low plasma coenzyme Q(10) levels and breast cancer risk in Chinese women. Cancer Epidemiol Biomarkers Prev 2011; 20:1124-30. [PMID: 21467235 DOI: 10.1158/1055-9965.epi-10-1261] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Low circulating levels of coenzyme Q(10) (CoQ(10)) have been associated with increased cancer incidence and poor prognosis for a number of cancer types, while a recent prospective study observed a positive association for CoQ(10) with breast cancer risk. METHODS We prospectively examined the association of plasma CoQ(10) with breast cancer risk in a nested case-control study of Chinese women within the Shanghai Women's Health Study (SWHS). Prediagnostic plasma samples were obtained from 340 cases and 653 age-matched controls and analyzed for total CoQ(10). RESULTS A borderline significant inverse association for breast cancer incidence with plasma CoQ(10) level was observed by a conditional logistic regression model adjusted for age and age at first live birth, which became significant after elimination of cases diagnosed within 1 year of blood draw (P(trend) = 0.03). This association was independent of menopausal status. Plasma CoQ(10) levels were also observed to be significantly associated with circulating γ-tocopherol (r = 0.50; P < 0.0001) and α-tocopherol (r = 0.38; P < 0.0001) levels. CONCLUSIONS Circulating levels of CoQ(10) were generally low in this population and the observed association with breast cancer risk may be limited to those women with exceptionally low values. IMPACT This study reports an inverse relationship between circulating CoQ(10) and breast cancer risk, while the only other prospective study of CoQ(10) and breast cancer to date found a positive association. Lower levels of CoQ(10) in the SWHS population suggest that the 2 studies may not be contradictory and indicate a possible nonlinear (U-shaped) association of CoQ(10) with risk.
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Affiliation(s)
- Robert V Cooney
- Office of Public Health Studies, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA.
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27
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Selective determination of ubiquinone in human plasma by HPLC with chemiluminescence reaction based on the redox cycle of quinone. Anal Bioanal Chem 2011; 400:381-5. [DOI: 10.1007/s00216-011-4662-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 01/02/2011] [Indexed: 10/18/2022]
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28
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Bahar M, Khaghani S, Pasalar P, Paknejad M, Khorramizadeh MR, Mirmiranpour H, Nejad SG. Exogenous coenzyme Q10 modulates MMP-2 activity in MCF-7 cell line as a breast cancer cellular model. Nutr J 2010; 9:62. [PMID: 21118526 PMCID: PMC3004807 DOI: 10.1186/1475-2891-9-62] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Accepted: 11/30/2010] [Indexed: 01/21/2023] Open
Abstract
Background/Aims Matrix Metalloproteinases 2 is a key molecule in cellular invasion and metastasis. Mitochondrial ROS has been established as a mediator of MMP activity. Coenzyme Q10 contributes to intracellular ROS regulation. Coenzyme Q10 beneficial effects on cancer are still in controversy but there are indications of Coenzyme Q10 complementing effect on tamoxifen receiving breast cancer patients. Methods In this study we aimed to investigate the correlation of the effects of co-incubation of coenzyme Q10 and N-acetyl-L-cysteine (NAC) on intracellular H2O2 content and Matrix Metalloproteinase 2 (MMP-2) activity in MCF-7 cell line. Results and Discussion Our experiment was designed to assess the effect in a time and dose related manner. Gelatin zymography and Flowcytometric measurement of H2O2 by 2'7',-dichlorofluorescin-diacetate probe were employed. The results showed that both coenzyme Q10 and N-acetyl-L-cysteine reduce MMP-2 activity along with the pro-oxidant capacity of the MCF-7 cell in a dose proportionate manner. Conclusions Collectively, the present study highlights the significance of Coenzyme Q10 effect on the cell invasion/metastasis effecter molecules.
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Affiliation(s)
- Massih Bahar
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Faculty of Medicine, Tehran, Iran
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Affiliation(s)
- Elena Ladas
- Columbia University Medical Center, Division of Pediatric Oncology, New York, NY, USA
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30
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Rusciani L, Proietti I, Paradisi A, Rusciani A, Guerriero G, Mammone A, De Gaetano A, Lippa S. Recombinant interferon alpha-2b and coenzyme Q10 as a postsurgical adjuvant therapy for melanoma: a 3-year trial with recombinant interferon-alpha and 5-year follow-up. Melanoma Res 2007; 17:177-83. [PMID: 17505263 DOI: 10.1097/cmr.0b013e32818867a0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Early surgical intervention remains the most successful therapy for melanoma. Despite better outcomes observed in soft tissue and lymph node metastases, the results of pharmacological therapies are still disappointing. Currently, there is no standard adjuvant therapy for melanoma. Low concentrations of coenzyme Q10 have been demonstrated in melanoma cell lines and in sera of melanoma patients. These data and the results of clinical trials of patients with other advanced cancers prompted this study of the long-term administration of an optimized dose of recombinant interferon alpha-2b and coenzyme Q10 to patients with stage I and II melanoma. A 3-year trial envisaging uninterrupted treatment with low-dose recombinant interferon alpha-2b (9 000 000 000 IU weekly) administered twice daily and coenzyme Q10 (400 mg/day) was conducted in patients with stage I and II melanoma (American Joint Committee on Cancer criteria 2002) and surgically removed lesions. Treatment efficacy was evaluated as incidence of recurrences at 5 years. All patients completed the treatment and the follow-up. Significantly different rates of disease progression were observed in the interferon+coenzyme Q10 and the interferon group for both stages. No patient withdrew from the study owing to side effects. Long-term administration of an optimized dose of recombinant interferon alpha-2b in combination with coenzyme Q10 seemed to induce significantly decreased rates of recurrence and had negligible adverse effects. A survival study could not be undertaken owing to the small patient sample and the short duration of follow-up.
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Affiliation(s)
- Luigi Rusciani
- Department of Dermatology, Catholic University of the Sacred Heart, Rome, Italy
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