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Cunha L, Bonfim L, Lima G, Silva R, Silva L, Lima P, Oliveira-Bahia V, Freitas J, Burbano R, Rocha C. In vivo evaluation of the potential protective effects of prolactin against damage caused by methylmercury. Braz J Med Biol Res 2022; 55:e11976. [PMID: 35857996 PMCID: PMC9296129 DOI: 10.1590/1414-431x2022e11976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/17/2022] [Indexed: 11/30/2022] Open
Abstract
Non-biodegradable metals such as mercury accumulate in living organisms during
life (bioaccumulation) and also within trophic webs (biomagnification) and may
reach high concentrations in humans. The contamination of humans by mercury in
drinking water and food may be common, in particular in riverside communities
that have a diet rich in fish. In vitro studies of human cell
lines exposed to the cytotoxic and mutagenic effects of methylmercury have shown
that prolactin has potential cytoprotective properties and may act as a
co-mitogenic factor and inhibitor of apoptosis. The present in
vivo study investigated the protective potential of prolactin
against the toxic effects of methylmercury in the mammal Mus
musculus. Histological and biochemical analyses, together with
biomarker of genotoxicity, were used to verify the protective potential of
prolactin in mice exposed to methylmercury. The reduction in kidney and liver
tissue damage was not significant. However, results of biochemical and genotoxic
analyses were excellent. After prolactin treatment, a significant reduction was
observed in biochemical parameters and mutagenic effects of methylmercury. The
study results therefore indicated that prolactin has protective effects against
the toxicity of methylmercury and allowed us to suggest the continuation of
research to propose prolactin in the future, as an alternative to prevent the
damage caused by mercury, especially in populations that are more exposed.
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Affiliation(s)
- L Cunha
- Laboratório de Citogenética Humana, Universidade Federal do Pará, Belém, PA, Brasil
| | - L Bonfim
- Laboratório de Citogenética Humana, Universidade Federal do Pará, Belém, PA, Brasil
| | - G Lima
- Laboratório Multidisciplinar de Morfofisiologia Animal, Universidade Federal do Pará, Belém, PA, Brasil
| | - R Silva
- Laboratório de Morfofisiologia Aplicada à Saúde, Universidade do Estado do Pará, Belém, PA, Brasil
| | - L Silva
- Laboratório de Morfofisiologia Aplicada à Saúde, Universidade do Estado do Pará, Belém, PA, Brasil
| | - P Lima
- Laboratório de Citogenética, Universidade do Estado do Pará, Belém, PA, Brasil
| | - V Oliveira-Bahia
- Laboratório Multidisciplinar de Morfofisiologia Animal, Universidade Federal do Pará, Belém, PA, Brasil
| | - J Freitas
- Laboratório de Morfofisiologia Aplicada à Saúde, Universidade do Estado do Pará, Belém, PA, Brasil
| | - R Burbano
- Laboratório de Biologia Molecular, Hospital Ophir Loyola, Belém, PA, Brasil
| | - C Rocha
- Instituto Federal de Educação, Ciência e Tecnologia do Pará, Diretoria de Pós-Graduação, Pesquisa e Inovação (DPI), Belém, PA, Brasil
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2
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Pekic S, Stojanovic M, Popovic V. Pituitary tumors and the risk of other malignancies: is the relationship coincidental or causal? ENDOCRINE ONCOLOGY (BRISTOL, ENGLAND) 2022; 2:R1-R13. [PMID: 37435457 PMCID: PMC10259320 DOI: 10.1530/eo-21-0033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/21/2021] [Indexed: 07/13/2023]
Abstract
Pituitary adenomas are benign neoplasms of the pituitary. The most prevalent are prolactinomas and non-functioning pituitary adenomas, followed by growth hormone- and ACTH-secreting adenomas. Most pituitary adenomas seem to be sporadic and their persistent growth is very atypical. No molecular markers predict their behavior. The occurrence of pituitary adenomas and malignancies in the same patient can be either pure coincidence or caused by shared underlying genetic susceptibility involved in tumorigenesis. Detailed family history on cancers/tumors in the first, second and third generation of family members on each side of the family has been reported in a few studies. They found an association of pituitary tumors with positive family history for breast, lung and colorectal cancer. We have reported that in about 50% of patients with pituitary adenomas, an association with positive family history for cancer has been found independent of secretory phenotype (acromegaly, prolactinoma, Cushing's disease or non-functioning pituitary adenomas). We also found earlier onset of pituitary tumors (younger age at diagnosis of pituitary tumors) in patients with a strong family history of cancer. In our recent unpublished series of 1300 patients with pituitary adenomas, 6.8% of patients were diagnosed with malignancy. The latency period between the diagnosis of pituitary adenoma and cancer was variable, and in 33% of patients, it was longer than 5 years. Besides the inherited trophic mechanisms (shared underlying genetic variants), the potential influence of shared complex epigenetic influences (environmental and behavioral factors - obesity, smoking, alcohol intake and insulin resistance) is discussed. Further studies are needed to better understand if patients with pituitary adenomas are at increased risk for cancer.
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Affiliation(s)
- Sandra Pekic
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, University Clinical Center Belgrade, Belgrade, Serbia
| | - Marko Stojanovic
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Endocrinology, Diabetes and Metabolic Diseases, University Clinical Center Belgrade, Belgrade, Serbia
| | - Vera Popovic
- School of Medicine, University of Belgrade, Belgrade, Serbia
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3
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Zhan X, Li J, Zhou T. Targeting Nrf2-Mediated Oxidative Stress Response Signaling Pathways as New Therapeutic Strategy for Pituitary Adenomas. Front Pharmacol 2021; 12:565748. [PMID: 33841137 PMCID: PMC8024532 DOI: 10.3389/fphar.2021.565748] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 02/12/2021] [Indexed: 12/27/2022] Open
Abstract
Oxidative stress and oxidative damage are the common pathophysiological characteristics in pituitary adenomas (PAs), which have been confirmed with many omics studies in PA tissues and cell/animal experimental studies. Nuclear factor erythroid 2 p45-related factor 2 (Nrf2), the core of oxidative stress response, is an oxidative stress sensor. Nrf2 is synthesized and regulated by multiple factors, including Keap1, ERK1/2, ERK5, JNK1/2, p38 MAPK, PKC, PI3K/AKT, and ER stress, in the cytoplasm. Under the oxidative stress status, Nrf2 quickly translocates from cytoplasm into the nucleus and binds to antioxidant response element /electrophile responsive element to initiate the expressions of antioxidant genes, phases I and II metabolizing enzymes, phase III detoxifying genes, chaperone/stress response genes, and ubiquitination/proteasomal degradation proteins. Many Nrf2 or Keap1 inhibitors have been reported as potential anticancer agents for different cancers. However, Nrf2 inhibitors have not been studied as potential anticancer agents for PAs. We recommend the emphasis on in-depth studies of Nrf2 signaling and potential therapeutic agents targeting Nrf2 signaling pathways as new therapeutic strategies for PAs. Also, the use of Nrf2 inhibitors targeting Nrf2 signaling in combination with ERK inhibitors plus p38 activators or JNK activators targeting MAPK signaling pathways, or drugs targeting mitochondrial dysfunction pathway might produce better anti-tumor effects on PAs. This perspective article reviews the advances in oxidative stress and Nrf2-mediated oxidative stress response signaling pathways in pituitary tumorigenesis, and the potential of targeting Nrf2 signaling pathways as a new therapeutic strategy for PAs.
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Affiliation(s)
- Xianquan Zhan
- Shandong Key Laboratory of Radiation Oncology, Cancer Hospital of Shandong First Medical University, Jinan, China.,Science and Technology Innovation Center, Shandong First Medical University, Jinan, China.,Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jiajia Li
- Science and Technology Innovation Center, Shandong First Medical University, Jinan, China.,Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Tian Zhou
- Science and Technology Innovation Center, Shandong First Medical University, Jinan, China.,Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
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4
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Poça KSD, Giardini I, Silva PVB, Geraldino BR, Bellomo A, Alves JA, Conde TR, Zamith HPDS, Otero UB, Ferraris FK, Friedrich K, Sarpa M. Gasoline-station workers in Brazil: Benzene exposure; Genotoxic and immunotoxic effects. Mutat Res 2021; 865:503322. [PMID: 33865537 DOI: 10.1016/j.mrgentox.2021.503322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 10/22/2022]
Abstract
Chronic exposure to benzene is a risk factor for hematological malignancies. Gasoline-station workers are exposed to benzene in gasoline, via both inhalation and dermal contact (attendants and managers) or inhalation (workers in the on-site convenience stores and offices). We have studied the exposure of these workers to benzene and the resulting genotoxic and immunotoxic effects. Levels of urinary trans, trans-muconic acid were higher among gasoline-station workers than among office workers with no known exposure to benzene (comparison group). Among the exposed workers, we observed statistically significant biological effects, including elevated DNA damage (comet assay); higher frequencies of micronuclei and nuclear buds (CBMN assay); lower levels of T-helper lymphocytes and naive Th lymphocytes; lower CD4 / CD8 ratio; and higher levels of NK cells and memory Th lymphocytes. Both groups of exposed workers (inhalation and inhalation + dermal routes) showed similar genotoxic and immunotoxic effects.
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Affiliation(s)
- Katia Soares da Poça
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Isabela Giardini
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Paula Vieira Baptista Silva
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Barbara Rodrigues Geraldino
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Antonella Bellomo
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Julia Araújo Alves
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
| | - Taline Ramos Conde
- Departamento de Farmacologia e Toxicologia, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (INCQS/FIOCRUZ) - Avenida Brasil, 4365 - Manguinhos, Rio de Janeiro, RJ, DFT/INCQS/FIOCRUZ, CEP 21040-900, Brazil.
| | - Helena Pereira da Silva Zamith
- Departamento de Farmacologia e Toxicologia, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (INCQS/FIOCRUZ) - Avenida Brasil, 4365 - Manguinhos, Rio de Janeiro, RJ, DFT/INCQS/FIOCRUZ, CEP 21040-900, Brazil.
| | - Ubirani Barros Otero
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil.
| | - Fausto Klabund Ferraris
- Departamento de Farmacologia e Toxicologia, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (INCQS/FIOCRUZ) - Avenida Brasil, 4365 - Manguinhos, Rio de Janeiro, RJ, DFT/INCQS/FIOCRUZ, CEP 21040-900, Brazil.
| | - Karen Friedrich
- Centro de Estudos em Saúde do Trabalhador e Ecologia Humana, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (CESTEH/ENSP/FIOCRUZ) - Rua Leopoldo Bulhões, 1480 - Manguinho, Rio de Janeiro, RJ, CEP 21041-210, Brazil.
| | - Marcia Sarpa
- Área Técnica Ambiente, Trabalho e Câncer, Instituto Nacional de Câncer José Alencar Gomes da Silva - INCA, Rua Marquês do Pombal, 125/5º andar - Centro, Rio de Janeiro, RJ, CEP 20230-240, Brazil; Laboratório de Mutagênese Ambiental, Departamento de Bioquímica, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro (UNIRIO) - Rua Frei Caneca, 94/4º andar - Centro, Rio de Janeiro. CEP 20211-010, Brazil.
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5
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Laffon B, Bonassi S, Costa S, Valdiglesias V. Genomic instability as a main driving factor of unsuccessful ageing: Potential for translating the use of micronuclei into clinical practice. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2020; 787:108359. [PMID: 34083047 DOI: 10.1016/j.mrrev.2020.108359] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 01/23/2023]
Abstract
Genome instability denotes an increased tendency to alterations in the genome during cell life cycle, driven by a large variety of endogenous and exogenous insults. Ageing is characterized by the presence of damage to various cellular constituents, but genome alterations, randomly accumulating with age in different tissues, constitute the key target in this process, and are believed to be the main factor of ageing. Age-related failure of DNA repair pathways allows DNA lesions to occur more frequently, and their accumulation over time contributes to the age-associated decrease in genome integrity in somatic cells. The micronucleus (MN) test is one of the most widely used assays to evaluate genomic instability in different surrogate tissues. A large number of studies has consistently shown a progressive increase in MN frequency with age, starting from very young age groups onwards. Therefore, MN frequency is a suitable biomarker of genomic instability in ageing. Frailty is a multidimensional geriatric syndrome of unsuccessful ageing, characterized by decreased biological reserves and increased vulnerability to external stressors, involving a higher risk of negative health outcomes. Although there is a well-founded belief that genome instability is involved in the frailty syndrome, only two studies investigated the relationship between MN frequency and frailty, not allowing to draw a definite conclusion on the utility of this biomarker for frailty detection. The use of MN and other genomic biomarkers in the detection and follow-up of patients affected by or at risk of frailty has the potential to accumulate evidence on the clinical impact of this approach in the identification and control of frailty in older people.
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Affiliation(s)
- Blanca Laffon
- Universidade da Coruña, Grupo DICOMOSA, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Psicología, Facultad de Ciencias de la Educación, Campus Elviña s/n, 15071 A, Coruña, Spain; Instituto de Investigación Biomédica de A Coruña (INIBIC), AE CICA-INIBIC, Oza, 15071 A, Coruña, Spain.
| | - Stefano Bonassi
- Unit of Clinical and Molecular Epidemiology, IRCCS San Raffaele Pisana, Via di Val Cannuta, 247, 00166, Rome, Italy; Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Via di Val Cannuta, 247, 00166, Rome, Italy
| | - Solange Costa
- Environmental Health Department, National Health Institute, Rua Alexandre Herculano 321, 4000-055, Porto, Portugal; EPIUnit -Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, n◦ 135, 4050-600, Porto, Portugal
| | - Vanessa Valdiglesias
- Instituto de Investigación Biomédica de A Coruña (INIBIC), AE CICA-INIBIC, Oza, 15071 A, Coruña, Spain; Universidade da Coruña, Grupo DICOMOSA, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Biología, Facultad de Ciencias, Campus A Zapateira s/n, 15071 A, Coruña, Spain
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6
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de Carvalho RM, de Alencar MVOB, da Mata AMOF, de Lima RMT, Sousa de Aguiar RP, Silva Teixeira J, Correia Jardim Paz MF, Morais Chaves SK, Islam MT, Sousa JMDCE, Pinheiro Ferreira PM, Melo Cavalcante AADC, Salehi B, Setzer WN, Sharifi-Rad J. Retinol palmitate against toxicogenic damages of antineoplastic drugs on normal and tumor cells. Chem Biol Interact 2020; 330:109219. [PMID: 32846153 DOI: 10.1016/j.cbi.2020.109219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/08/2020] [Accepted: 07/31/2020] [Indexed: 01/23/2023]
Abstract
The lack of tissue selectivity of anticancer drugs generates intense collateral and adverse effects of cancer patients, making the incorporation of vitamins or micronutrients into the diet of individuals to reduce side or adverse effects of antineoplastics. The study aimed to evaluate the effects of retinol palmitate (RP) on the toxicogenic damages induced by cyclophosphamide (CPA), doxorubicin (DOX) and its association with the AC protocol (CPA + DOX), in Sarcoma 180 (S-180) tumor cell line, using the micronuclei test with a block of cytokinesis (CBMN); and in non-tumor cells derived from Mus musculus using the comet assay. The results suggest that CPA, DOX and AC protocol induced significant toxicogenic damages (P < 0.05) on the S-180 cells by induction of micronuclei, cytoplasmic bridges, nuclear buds, apoptosis, and cell necrosis, proving their antitumor effects, and significant damage (P < 0.001) to the genetic material of peripheral blood cells of healthy mice, proving the genotoxic potential of these drugs. However, RP modulated the toxicogenic effects of antineoplastic tested both in the CBMN test (P < 0.05), at the concentrations of 1, 10 and 100 IU/mL; as in the comet assay (P < 0.001) at the concentration of 100 IU/kg for the index and frequency of genotoxic damage. The accumulated results suggest that RP reduced the action of antineoplastics in non-tumor cells as well as the cytotoxic, mutagenic, and cell death in neoplastic cells.
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Affiliation(s)
- Ricardo Melo de Carvalho
- Laboratory for Toxicological Genetics, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | | | | | - Rosália Maria Tôrres de Lima
- Laboratory for Toxicological Genetics, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | - Rai Pablo Sousa de Aguiar
- University Center for Health, Human and Technological Sciences of Piauí, Integrated Health Clinic, UNINOVAFAPI, Teresina, Brazil
| | - Jadson Silva Teixeira
- University Center for Health, Human and Technological Sciences of Piauí, Integrated Health Clinic, UNINOVAFAPI, Teresina, Brazil
| | | | - Soane Kaline Morais Chaves
- Laboratory for Toxicological Genetics, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | - Muhammad Torequl Islam
- Laboratory of Theoretical and Computational Biophysics, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | | | - Paulo Michel Pinheiro Ferreira
- Laboratory of Experimental Cancerology, Department of Biophysics and Physiology, Federal University of Piauí, Teresina, Brazil
| | | | - Bahare Salehi
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran; Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran.
| | - William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL, 35899, USA; Aromatic Plant Research Center, 230 N 1200 E, Suite 100, Lehi, UT, 84043, USA
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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7
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Alhmoud JF, Woolley JF, Al Moustafa AE, Malki MI. DNA Damage/Repair Management in Cancers. Cancers (Basel) 2020; 12:E1050. [PMID: 32340362 PMCID: PMC7226105 DOI: 10.3390/cancers12041050] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 12/11/2022] Open
Abstract
DNA damage is well recognized as a critical factor in cancer development and progression. DNA lesions create an abnormal nucleotide or nucleotide fragment, causing a break in one or both chains of the DNA strand. When DNA damage occurs, the possibility of generated mutations increases. Genomic instability is one of the most important factors that lead to cancer development. DNA repair pathways perform the essential role of correcting the DNA lesions that occur from DNA damaging agents or carcinogens, thus maintaining genomic stability. Inefficient DNA repair is a critical driving force behind cancer establishment, progression and evolution. A thorough understanding of DNA repair mechanisms in cancer will allow for better therapeutic intervention. In this review we will discuss the relationship between DNA damage/repair mechanisms and cancer, and how we can target these pathways.
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Affiliation(s)
- Jehad F. Alhmoud
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Al-Ahliyya Amman University, Amman 19328, Jordan
| | - John F. Woolley
- Department of Molecular & Clinical Pharmacology, Liverpool University, Liverpool L69 3GE, UK;
| | | | - Mohammed Imad Malki
- College of Medicine, QU Health, Qatar University, Doha P. O. Box 2713, Qatar;
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8
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Donmez-Altuntas H, Bayram F, Coskun-Demirkalp AN, Baspınar O, Kocer D, Toth PP. Therapeutic effects of statins on chromosomal DNA damage of dyslipidemic patients. Exp Biol Med (Maywood) 2019; 244:1089-1095. [PMID: 31426681 DOI: 10.1177/1535370219871895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Statins are a group of cholesterol lowering drugs and frequently used in the therapy of dyslipidemia. Our knowledge of the impact of statin therapy on DNA damage is as yet rudimentary. In this study, we aimed to assess the possible (1) genotoxic, cytostatic, and cytotoxic effects of statins in peripheral blood lymphocytes by using the cytokinesis-block micronucleus cytome (CBMN-cyt) assay, and (2) oxidative DNA damage by measuring plasma 8-hydroxy-2′-deoxyguanosine (8-OHdG) levels in response to statin therapy. Thirty patients with dyslipidemia who had no chronic diseases and did not use any medicines that interfere lipid values and twenty control subjects were included in the study. Statin therapy was initiated at risk-stratified doses. Blood samples were taken before and after treatment with statins and from control subjects, and CBMN-cyt assay parameters and 8-OHdG levels were evaluated. The chromosomal DNA damage (micronuclei and nucleoplasmic bridges [NPBs]), cytostasis (nuclear division index [NDI]), and cytotoxicity (apoptotic and necrotic cell frequencies) were decreased in patients with dyslipidemia after statin treatment. No significant differences were found for 8-OHdG levels between patients with dyslipidemia before or after statin therapy. The total cholesterol and low-density lipoprotein-cholesterol levels showed positive correlations with NPB frequency in patients with dyslipidemia prior to statin treatment. The present study is the first to evaluate CBMN-cyt assay biomarkers and 8-OHdG levels in patients with dyslipidemia before and after treatment with statins. The observed reductions of chromosomal DNA damage and NDI values with statin treatment could represent an important and under-appreciated pleiotropic effect of these agents. Impact statement In literature, it is possible to find some in vitro cytokinesis-block micronucleus (CBMN) assay studies about human lymphocytes and statins. But, there are no data on CBMN-cytome (CBMN-cyt) assay parameters related to statin therapy in patients with dyslipidemia. The present study is the first to evaluate CBMN-cyt assay biomarkers and 8-OHdG levels in patients with dyslipidemia before treatment and after treatment with statins (5–10 mg/day rosuvastatin or 10–20 mg/day atorvastatin). In this study we show that statin therapy decreased chromosomal DNA damage (micronuclei and nucleoplasmic bridges) and nuclear division index (NDI) values in patients with dyslipidemia by possible molecular reasons independent of oxidative DNA damage. In addition, the decrease of chromosomal DNA damage and NDI values with statin treatment could be indicated by the association between statin use and reduced risk of cancer.
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Affiliation(s)
- Hamiyet Donmez-Altuntas
- Department of Medical Biology, Faculty of Medicine, Erciyes University, Kayseri 38030, Turkey.,Betül-Ziya Eren Genome and Stem Cell Research Center, Erciyes University, Kayseri 38030, Turkey
| | - Fahri Bayram
- Department of Endocrinology and Metabolism, Faculty of Medicine, Erciyes University, Kayseri 38030, Turkey
| | - Ayse N Coskun-Demirkalp
- Department of Medical Biology, Faculty of Medicine, Erciyes University, Kayseri 38030, Turkey.,Mucur Vocational School of Health Services, Ahi Evran University, Kırşehir 40500, Turkey
| | - Osman Baspınar
- Department of Internal Diseases, Kayseri Education and Research Hospital, Health Sciences University, Kayseri 38080, Turkey
| | - Derya Kocer
- Department of Biochemistry, Kayseri Education and Research Hospital, Health Sciences University, Kayseri 38080, Turkey
| | - Peter P Toth
- The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD 21287, USA.,Preventive Cardiology, CGH Medical Center, Sterling, IL 61081, USA
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9
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Salimi M, Eskandari E. Association of Elevated Peripheral Blood Micronucleus Frequency and Bmi-1 mRNA Expression with Metastasis in
Iranian Breast Cancer Patients. Asian Pac J Cancer Prev 2018; 19:2723-2730. [PMID: 30360597 PMCID: PMC6291066 DOI: 10.22034/apjcp.2018.19.10.2723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background: In order to find cytogenetic and molecular metastasis biomarkers detectable in peripheral blood the spontaneous genomic instability expressed as micronuclei and Bmi-1 expression in peripheral blood of breast cancer (BC) patients were studied in different stages of the disease compared with unaffected first-degree relatives (FDRs) and normal control. Methods: The Cytokinesis Block Micronuclei Cytome (CBMN cyt) and nested real-time Reverse Transcription-Polymerase Chain Reaction (RT-PCR) assays, were respectively used to measure genomic instability and Bmi-1 gene expression in 160 Iranian individuals comprised of BC patients in different stages of the disease, unaffected FDRs and normal control groups. Result: The frequency of micronuclei and Bmi-1 expression were dramatically higher in distant metastasis compared with non-metastatic BC. In spite of micronucleus frequency with no association with lymph node (LN) involvement and hormone receptor status, the Bmi-1 expression level was higher in LN positive and triple negative patients. Conclusion: Our results indicate that increased genomic instability expressed as micronuclei and higher Bmi-1 expression in peripheral blood are associated with metastasis in breast cancer. Therefore implementation of micronucleus assay and Bmi-1 expression analysis in blood as possible cytogenetic and molecular biomarkers in clinical level may potentially enhance the quality of management of patients with breast cancer.
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Affiliation(s)
- Mahdieh Salimi
- Department of Medical Genetics, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
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El-Zein RA, Etzel CJ, Munden RF. The cytokinesis-blocked micronucleus assay as a novel biomarker for selection of lung cancer screening participants. Transl Lung Cancer Res 2018; 7:336-346. [PMID: 30050771 DOI: 10.21037/tlcr.2018.05.09] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Despite the promising results of the National Lung Screening Trial in reducing lung cancer mortality among high risk smokers, several challenges remain to be addressed. These include the high false positive rates and the large number of smokers screened in order to prevent one lung cancer death. In addition, host genetic susceptibility has not been integrated into selection of who should be screened. These challenges highlight the need to develop robust ways to identify susceptible smokers for appropriate screening. Methods We used the cytokinesis block micronucleus (CBMN) assay to assess smoking induced genetic instability among NLST participants. Blood cultures were prepared at time of entry into the screening study and DNA damage was recorded as the frequency of binucleated nucleoplasmic bridges and micronuclei. Low dose CT (LDCT) and chest X-ray (CXR) image findings were available upon unblinding of the NLST study and imaging data were merged with blood marker data for statistical analysis. Results A total of 641 participants were included in this study. The frequency of the CBMN endpoints at time of entry into the study was significantly higher among study participants who had a positive finding during the 3-year screening or reported lung cancer at the end of the follow-up period as compared to participants who were negative. Growth curve models were used to compare trajectories of change in CBMN endpoints between entry into the study and end-of-screening period. A statistically significant increase was predicted for CBMN endpoints among the study participants who were positive versus those who remained negative at the end-of-screening period (P<0.001). Conclusions Genetic instability biomarkers have the potential of facilitating the identification of genetically susceptible high-risk smokers who would benefit from targeted lung screening programs.
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Affiliation(s)
- Randa A El-Zein
- Department of Radiology, Houston Methodist Research Institute, Houston, Texas, USA
| | | | - Reginald F Munden
- Wake Forest Baptist Health and School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA
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Gashi G, Mahovlić V, Bahtiri E, Kurshumliu F, Podrimaj-Bytyqi A, Elezaj IR. Assessment of the association between the frequency of micronucleus and p16INK4a/Ki-67 co-expression in patients with cervical intraepithelial lesions. Biotech Histochem 2018; 93:496-504. [DOI: 10.1080/10520295.2018.1462533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Affiliation(s)
- G Gashi
- Department of Pathology, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
| | - V Mahovlić
- Department of Pathology and Cytology, Clinical Unit of Gynecological Cytology, University Hospital Center, Zagreb, Croatia
| | - E Bahtiri
- Department of Pharmacology, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
| | - F Kurshumliu
- Department of Pathology, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
| | - A Podrimaj-Bytyqi
- Department of Pathology, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
| | - IR Elezaj
- Department of Biology, Faculty of Natural Sciences, University of Prishtina, Prishtina, Kosovo
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Gashi G, Mahovlić V, Manxhuka-Kerliu S, Podrimaj-Bytyqi A, Gashi L, Elezaj IR. The association between micronucleus, nucleoplasmic bridges, and nuclear buds frequency and the degree of uterine cervical lesions. Biomarkers 2018; 23:364-372. [PMID: 29338484 DOI: 10.1080/1354750x.2018.1428828] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIM The loss of genomic stability plays an important role in carcinogenesis. Therefore, it is imperative to use certain biomarkers of DNA damage due to genomic instability in order to predict cancer risk. The aim of this study was the evaluation of genomic instability in patients with cervical lesions. MATERIALS AND METHODS We investigated the genetic damages in 80 subjects: 40 patients with high-grade squamous intraepithelial lesions (HSIL), 20 patients with invasive squamous cervical cancer (SCC) and 20 healthy women with a biomarker in two different tissues; the micronucleus (MN) test in peripheral blood lymphocytes (PBL), and in buccal exfoliated cells (BEC). This study also examined the frequency of other nuclear anomalies such as nucleoplasmic bridges (NPBs) and nuclear bunds (NBUDs) in PBL. RESULTS The frequency of MN in BEC, MN in PBL, NPB in PBL and NBUD in PBL were significantly higher (p < 0.001), in patients compared to controls. The DNA damages in BEC and PBL were correlated positively with histological grade of cervical lesions. CONCLUSION Although larger studies are needed, our data support the predictive value of MN, NPB and NBUD as biomarkers of genomic instability for evaluation of risk level of cancer diseases.
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Affiliation(s)
- Goneta Gashi
- a Department of Pathology, Faculty of Medicine , University of Prishtina , Prishtina , Kosovo
| | - Vesna Mahovlić
- b Department of Pathology and Cytology , Clinical Unit of Gynecological Cytology, University Hospital Center , Zagreb , Croatia
| | - Suzana Manxhuka-Kerliu
- a Department of Pathology, Faculty of Medicine , University of Prishtina , Prishtina , Kosovo
| | - Arjeta Podrimaj-Bytyqi
- a Department of Pathology, Faculty of Medicine , University of Prishtina , Prishtina , Kosovo
| | - Luljeta Gashi
- c Department of Radiology, Faculty of Medicine , University of Prishtina , Prishtina , Kosovo
| | - Isa R Elezaj
- d Department of Biology, Faculty of Natural Sciences , University of Prishtina , Prishtina , Kosovo
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Gundogan K, Donmez-Altuntas H, Hamurcu Z, Akbudak IH, Sungur M, Bitgen N, Baskol G, Bayram F. Evaluation of chromosomal DNA damage, cytotoxicity, cytostasis, oxidative DNA damage and their relationship with endocrine hormones in patients with acute organophosphate poisoning. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 825:1-7. [PMID: 29307370 DOI: 10.1016/j.mrgentox.2017.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/27/2017] [Accepted: 11/07/2017] [Indexed: 11/25/2022]
Abstract
Pesticides are commonly used compounds in agriculture. Especially, organophosphates (OPs) are among the extensively used pesticides. Therefore, OPs poisoning is common, especially in underdeveloped and developing countries. Primary aim of this study was to research the effects of acute OPs poisoning on genome instability in the individuals' lymphocytes with acute OPs poisoning both by using the cytokinesis-block micronucleus cytome (CBMN-cyt) assay to examine chromosome/genome damage, cell proliferation index and cell death rate and by using the plasma 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels to determine oxidative DNA damage. Secondary aim of this study was also to assess whether a relation exists between endocrine hormones and the genome damage in acute OPs poisoning. In the study, blood samples were analysed of 13 patients before and after treatment admitted to the Department of Intensive Care Unit with acute OPs poisoning and of 13 healthy subjects of similar age and sex. The present study demonstrates that genome damage (micronucleus; MN and nucleoplasmic bridges; NPBs frequencies), apoptotic and necrotic cell frequencies increased in lymphocytes of patients with acute OPs poisoning before treatment and decreased after treatment. The present study also show that CBMN cyt assay parameters and 8-OHdG levels could be affected by some endocrine hormones such as E2, fT3, fT4, GH, IGF-1, FSH, LH, TSH, PRL, but not be related to ACTH and tT levels in acute OPs poisoning. In conclusion, it is believed that this is the first study to evaluate the chromosomal/oxidative DNA damage, cell proliferation, cell death and their associations with endocrine hormones in acute OPs poisoning. These preliminary findings need to be supported by further studies with larger sample sizes.
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Affiliation(s)
- Kursat Gundogan
- Intensive Care Unit, Department of Internal Medicine, Medical Faculty, Erciyes University, Kayseri, Turkey
| | | | - Zuhal Hamurcu
- Department of Medical Biology, Medical Faculty, Erciyes University, Kayseri, Turkey
| | - Ismail Hakkı Akbudak
- Intensive Care Unit, Department of Internal Medicine, Medical Faculty, Erciyes University, Kayseri, Turkey
| | - Murat Sungur
- Intensive Care Unit, Department of Internal Medicine, Medical Faculty, Erciyes University, Kayseri, Turkey
| | - Nazmiye Bitgen
- Department of Chemical Technology, Technical Sciences Vocational School, Aksaray University, Aksaray, Turkey
| | - Gulden Baskol
- Department of Biochemistry, Medical Faculty, Erciyes University, Kayseri, Turkey
| | - Fahri Bayram
- Department of Endocrinology and Metabolism, Medical Faculty, Erciyes University, Kayseri, Turkey
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