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Arrue A, Olivas O, Erkoreka L, Alvarez FJ, Arnaiz A, Varela N, Bilbao A, Rodríguez JJ, Moreno-Calle MT, Gordo E, Marín E, Garcia-Cano J, Saez E, Gonzalez-Torres MÁ, Zumárraga M, Basterreche N. Multilocus Genetic Profile Reflecting Low Dopaminergic Signaling Is Directly Associated with Obesity and Cardiometabolic Disorders Due to Antipsychotic Treatment. Pharmaceutics 2023; 15:2134. [PMID: 37631349 PMCID: PMC10459305 DOI: 10.3390/pharmaceutics15082134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Treatment with second-generation antipsychotics (SGAs) can cause obesity and other cardiometabolic disorders linked to D2 receptor (DRD2) and to genotypes affecting dopaminergic (DA) activity, within reward circuits. We explored the relationship of cardiometabolic alterations with single genetic polymorphisms DRD2 rs1799732 (NG_008841.1:g.4750dup -> C), DRD2 rs6277 (NG_008841.1:g.67543C>T), COMT rs4680 (NG_011526.1:g.27009G>A), and VNTR in both DRD4 NC_000011.10 (637269-640706) and DAT1 NC_000005.10 (1392794-1445440), as well as with a multilocus genetic profile score (MLGP). A total of 285 psychiatric patients treated with SGAs for at least three months were selected. Cardiometabolic parameters were classified according to ATP-III and WHO criteria. Blood samples were taken for routinely biochemical assays and PCR genotyping. Obesity (BMI, waist (W)), high diastolic blood pressure (DBP), and hypertriglyceridemia (HTG) were present in those genetic variants related to low dopaminergic activity: InsIns genotype in rs1799732 (BMI: OR: 2.91 [1.42-5.94]), DRD4-VNTR-L allele (W: OR: 1.73 [1.04-2.87]) and 9R9R variant in DAT1-VNTR (W: OR: 2.73 [1.16-6.40]; high DBP: OR: 3.33 [1.54-7.31]; HTG: OR: 4.38 [1.85-10.36]). A low MLGP score indicated a higher risk of suffering cardiometabolic disorders (BMI: OR: 1.23 [1.05-1.45]; W: OR: 1.18 [1.03-1.34]; high DBP: OR: 1.22 [1.06-1.41]; HTG: OR: 1.20 [1.04-1.39]). The MLGP score was more sensitive for detecting the risk of suffering these alterations. Low dopaminergic system function would contribute to increased obesity, BDP, and HTG following long-term SGA treatment.
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Affiliation(s)
- Aurora Arrue
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Neurochemical Research Unit, Bizkaia Mental Health Network, Osakidetza Basque Health Service, 48903 Barakaldo, Spain
| | - Olga Olivas
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Bizkaia Mental Health Network, Zaldibar Hospital, Osakidetza Basque Health Service, 48250 Zaldibar, Spain
| | - Leire Erkoreka
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Department of Psychiatry, Galdakao-Usánsolo University Hospital, Osakidetza Basque Health Service, 48960 Galdakao, Spain
- Department of Neurosciences, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Francisco Jose Alvarez
- Research Unit, Cruces University Hospital, Osakidetza Basque Health Service, 48903 Barakaldo, Spain
| | - Ainara Arnaiz
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Erandio Mental Health Center, Bizkaia Mental Health Network, Osakidetza Basque Health Service, 48950 Erandio, Spain
| | - Noemi Varela
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Uribe Mental Health Center, Bizkaia Mental Health Network, Osakidetza Basque Health Service, 48990 Getxo, Spain
| | - Ainhoa Bilbao
- Animal Research Facility, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - Jose-Julio Rodríguez
- Department of Neurosciences, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
- Functional Neuroanatomy, BioCruces Bizkaia Health Research Institute, Ikerbasque Basque Foundation for Science, 48903 Barakaldo, Spain
| | - María Teresa Moreno-Calle
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Department of Psychiatry, Galdakao-Usánsolo University Hospital, Osakidetza Basque Health Service, 48960 Galdakao, Spain
| | - Estibaliz Gordo
- Bizkaia Mental Health Network, Zamudio Hospital, Osakidetza Basque Health Service, 48170 Zamudio, Spain
| | - Elena Marín
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Bizkaia Mental Health Network, Bermeo Hospital, Osakidetza Basque Health Service, 48370 Bermeo, Spain
| | - Javier Garcia-Cano
- Alternatives to Hospitalization in Bilbao, Bizkaia Mental Health Network, Osakidetza Basque Health Service, 48903 Bilbao, Spain
| | - Estela Saez
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Department of Psychiatry, Galdakao-Usánsolo University Hospital, Osakidetza Basque Health Service, 48960 Galdakao, Spain
| | - Miguel Ángel Gonzalez-Torres
- Department of Neurosciences, Faculty of Medicine and Dentistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
- Integrative Research Group in Mental Health, BioCruces Bizkaia Health Research Institute, 48013 Bilbao, Spain
- Department of Psychiatry, Basurto University Hospital, Osakidetza Basque Health Service, 48013 Bilbao, Spain
| | - Mercedes Zumárraga
- Mental Health Network Group, BioCruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (O.O.); (L.E.)
- Neurochemical Research Unit, Bizkaia Mental Health Network, Osakidetza Basque Health Service, 48903 Barakaldo, Spain
| | - Nieves Basterreche
- Functional Neuroanatomy, BioCruces Bizkaia Health Research Institute, Ikerbasque Basque Foundation for Science, 48903 Barakaldo, Spain
- Integrative Research Group in Mental Health, BioCruces Bizkaia Health Research Institute, 48013 Bilbao, Spain
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2
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Shukla MK, Dubey A, Pandey S, Singh SK, Gupta G, Prasher P, Chellappan DK, Oliver BG, Kumar D, Dua K. Managing Apoptosis in Lung Diseases using Nano-assisted Drug Delivery System. Curr Pharm Des 2022; 28:3202-3211. [PMID: 35422206 DOI: 10.2174/1381612828666220413103831] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/25/2022] [Indexed: 01/28/2023]
Abstract
Several factors exist that limit the efficacy of lung cancer treatment. These may be tumor-specific delivery of therapeutics, airway geometry, humidity, clearance mechanisms, presence of lung diseases, and therapy against tumor cell resistance. Advancements in drug delivery using nanotechnology based multifunctional nanocarriers, have emerged as a viable method for treating lung cancer with more efficacy and fewer adverse effects. This review does a thorough and critical examination of effective nano-enabled approaches for lung cancer treatment, such as nano-assisted drug delivery systems. In addition, to therapeutic effectiveness, researchers have been working to determine several strategies to produce nanotherapeutics by adjusting the size, drug loading, transport, and retention. Personalized lung tumor therapies using sophisticated nano modalities have the potential to provide great therapeutic advantages based on individual unique genetic markers and disease profiles. Overall, this review provides comprehensive information on newer nanotechnological prospects for improving the management of apoptosis in lung cancer.
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Affiliation(s)
- Monu K Shukla
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan-173229, Himachal Pradesh, India
| | - Amit Dubey
- Computational Chemistry and Drug Discovery Division, Quanta Calculus Pvt. Ltd., Kushinagar-274203, India.,Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu 602105, India
| | - Sadanand Pandey
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Sachin K Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab, India.,Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo NSW 2007, Australia
| | - Gaurav Gupta
- Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu 602105, India.,School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, 302017, India.,Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, 248007, India
| | - Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Dehradun 248007, India
| | - Dinesh K Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Brian G Oliver
- School of Life Sciences, University of Technology Sydney, Ultimo, NSW, 2007, Australia.,Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, NSW 2037, Australia
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan-173229, Himachal Pradesh, India
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo NSW 2007, Australia.,Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, NSW 2037, Australia.,Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia
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3
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Aslanoglou D, Bertera S, Friggeri L, Sánchez-Soto M, Lee J, Xue X, Logan RW, Lane JR, Yechoor VK, McCormick PJ, Meiler J, Free RB, Sibley DR, Bottino R, Freyberg Z. Dual pancreatic adrenergic and dopaminergic signaling as a therapeutic target of bromocriptine. iScience 2022; 25:104771. [PMID: 35982797 PMCID: PMC9379584 DOI: 10.1016/j.isci.2022.104771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 06/10/2022] [Accepted: 07/11/2022] [Indexed: 11/23/2022] Open
Abstract
Bromocriptine is approved as a diabetes therapy, yet its therapeutic mechanisms remain unclear. Though bromocriptine's actions have been mainly attributed to the stimulation of brain dopamine D2 receptors (D2R), bromocriptine also targets the pancreas. Here, we employ bromocriptine as a tool to elucidate the roles of catecholamine signaling in regulating pancreatic hormone secretion. In β-cells, bromocriptine acts on D2R and α2A-adrenergic receptor (α2A-AR) to reduce glucose-stimulated insulin secretion (GSIS). Moreover, in α-cells, bromocriptine acts via D2R to reduce glucagon secretion. α2A-AR activation by bromocriptine recruits an ensemble of G proteins with no β-arrestin2 recruitment. In contrast, D2R recruits G proteins and β-arrestin2 upon bromocriptine stimulation, demonstrating receptor-specific signaling. Docking studies reveal distinct bromocriptine binding to α2A-AR versus D2R, providing a structural basis for bromocriptine's dual actions on β-cell α2A-AR and D2R. Together, joint dopaminergic and adrenergic receptor actions on α-cell and β-cell hormone release provide a new therapeutic mechanism to improve dysglycemia.
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Affiliation(s)
- Despoina Aslanoglou
- Translational Neuroscience Program, Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Suzanne Bertera
- Institute of Cellular Therapeutics, Allegheny Health Network Research Institute, Allegheny Health Network, Pittsburgh, PA, USA
| | - Laura Friggeri
- Department of Chemistry, Center for Structural Biology, Vanderbilt University, Nashville, TN, USA
| | - Marta Sánchez-Soto
- Molecular Neuropharmacology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Jeongkyung Lee
- Diabetes and Beta Cell Biology Center, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Xiangning Xue
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ryan W. Logan
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
| | - J. Robert Lane
- Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, Queen’s Medical Centre, University of Nottingham, Nottingham, UK
- Centre of Membrane Protein and Receptors, Universities of Birmingham and Nottingham, Nottingham, UK
| | - Vijay K. Yechoor
- Diabetes and Beta Cell Biology Center, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Peter J. McCormick
- Centre for Endocrinology, William Harvey Research Institute, Bart’s and the London School of Medicine and Dentistry, Queen Mary, University of London, London, UK
| | - Jens Meiler
- Department of Chemistry, Center for Structural Biology, Vanderbilt University, Nashville, TN, USA
- Institute for Drug Discovery, Leipzig University Medical School, Leipzig, Germany
| | - R. Benjamin Free
- Molecular Neuropharmacology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - David R. Sibley
- Molecular Neuropharmacology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Rita Bottino
- Institute of Cellular Therapeutics, Allegheny Health Network Research Institute, Allegheny Health Network, Pittsburgh, PA, USA
- Imagine Pharma, Pittsburgh, PA, USA
| | - Zachary Freyberg
- Translational Neuroscience Program, Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Cell Biology, University of Pittsburgh, PA, USA
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4
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Calorie restriction changes the anxiety-like behaviour of ageing male Wistar rats in an onset- and duration-dependent manner. Mech Ageing Dev 2022; 204:111666. [DOI: 10.1016/j.mad.2022.111666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 01/28/2023]
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5
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Sheikhpour M, Sadeghizadeh M, Yazdian F, Mansoori A, Asadi H, Movafagh A, Shahraeini SS. Co-Administration of Curcumin and Bromocriptine Nano-liposomes for Induction of Apoptosis in Lung Cancer Cells. IRANIAN BIOMEDICAL JOURNAL 2019. [PMID: 31454860 PMCID: PMC6900482 DOI: 10.29252/ibj.24.1.24] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Background: In recent years, nanotechnology with modern advances in the macromolecular design of nano-carriers has proved to be helpful in the development of drugs delivery systems. This research represents a novel co-administration of nano-vehicles, known as liposomes. Liposomes efficiently encapsulate curcumin and BR in a polymer structure, which results in enhanced aqueous solubility of the mentioned hydrophobic agents and higher bioavailability of the drugs. Methods: Preparation of curcumin and BR liposomes were carried out by the thin film method, and the amounts of purified drug and its release were analyzed. After dose determination, the human lung cancer cells (QU-DB) were exposed to BR and curcumin liposomes for 12, 24, and 48 h. Then the viability and apoptosis assays were carried out by using MTT and flow cytometry technique, respectively. Results: In this research, in vitro anti-cancer effects of former nano-formulations on lung cancer cells was confirmed, and no cytotoxicity effects of these nano-preparations were observed in the normal cells (HFLF-PI5). Conclusion: Our findings suggest the nano-liposomal drugs as effective anti-cancer agents; however, additional clinical examinations are required.
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Affiliation(s)
- Mojgan Sheikhpour
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Ali Mansoori
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Hassan Asadi
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Abolfazl Movafagh
- Department of Medical Genetics, Cancer Research Center, Shohada Hospital School of Medicine, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Seyed Sadegh Shahraeini
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
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6
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Siafis S, Tzachanis D, Samara M, Papazisis G. Antipsychotic Drugs: From Receptor-binding Profiles to Metabolic Side Effects. Curr Neuropharmacol 2018; 16:1210-1223. [PMID: 28676017 PMCID: PMC6187748 DOI: 10.2174/1570159x15666170630163616] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/25/2017] [Accepted: 06/21/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Antipsychotic-induced metabolic side effects are major concerns in psychopharmacology and clinical psychiatry. Their pathogenetic mechanisms are still not elucidated. METHODS Herein, we review the impact of neurotransmitters on metabolic regulation, providing insights into antipsychotic-induced metabolic side effects. RESULTS Antipsychotic drugs seem to interfere with feeding behaviors and energy balance, processes that control metabolic regulation. Reward and energy balance centers in central nervous system constitute the central level of metabolic regulation. The peripheral level consists of skeletal muscles, the liver, the pancreas, the adipose tissue and neuroendocrine connections. Neurotransmitter receptors have crucial roles in metabolic regulation and they are also targets of antipsychotic drugs. Interaction of antipsychotics with neurotransmitters could have both protective and harmful effects on metabolism. CONCLUSION Emerging evidence suggests that antipsychotics have different liabilities to induce obesity, diabetes and dyslipidemia. However this diversity cannot be explained merely by drugs'pharmacodynamic profiles, highlighting the need for further research.
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Affiliation(s)
| | | | | | - Georgios Papazisis
- Address correspondence to this author at the Department of Clinical
Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece; Tel/Fax: +30 2310 999323; E-mail:
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7
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Nash AI. Crosstalk between insulin and dopamine signaling: A basis for the metabolic effects of antipsychotic drugs. J Chem Neuroanat 2017; 83-84:59-68. [DOI: 10.1016/j.jchemneu.2016.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/14/2016] [Accepted: 07/27/2016] [Indexed: 12/21/2022]
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8
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Pornour M, Ahangari G, Hejazi SH, Ahmadkhaniha HR, Akbari ME. Dopamine Receptor Gene (DRD1-DRD5) Expression Changes as Stress Factors Associated with Breast Cancer. Asian Pac J Cancer Prev 2015; 15:10339-43. [DOI: 10.7314/apjcp.2014.15.23.10339] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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9
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Sheikhpour M, Ahangari G, Sadeghizadeh M, Deezagi A. A novel report of apoptosis in human lung carcinoma cells using selective agonist of D2-like dopamine receptors: a new approach for the treatment of human non-small cell lung cancer. Int J Immunopathol Pharmacol 2013; 26:393-402. [PMID: 23755754 DOI: 10.1177/039463201302600212] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In our previous study, a relationship between low expression of D2-like dopamine receptor genes and non-small cell lung cancer (NSCLC) disease was found. In this new research, by using selective agonist of these receptors, Bromocriptine (BR), we attempted to activate D2-like expression and apoptotic induction in a selective cell line of NSCLC. In addition, the relationship of apoptotic response of human lung carcinoma cells to BR and D2- dopamine receptor genes is investigated. Human lung cancer (QU-DB) cells were treated by five doses of BR at 48 h and cell viability was determined by MTT assay. The gene expression pattern of D2-like dopamine receptor Genes was studied by Real Time PCR. Nuclear morphology of cells was monitored by DAPI flourescent staining then induction of DNA fragmentation by BR was shown in an agarose gel. Finally, the detection and quantification of apoptosis and its differentiation from necrosis was carried out by using Annecxin-V-Fluos Staining. In this study, it is demonstrated that BR inhibited the proliferation of human lung cancer cells and induced apoptosis in them. In addition, the probable relationship between D2-dopamine receptor genes expression and the development of apoptosis was found. In conclusion, BR is responsible for induction of apoptosis in human lung cancer cells and can be used in treatment of these tumoric cells. In addition, normal expression of D2 dopamine receptors was associated with apoptotic effect of BR on these cells.
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Affiliation(s)
- M Sheikhpour
- Department of Genetic, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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10
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Iozzo P, Guiducci L, Guzzardi MA, Pagotto U. Brain PET imaging in obesity and food addiction: current evidence and hypothesis. Obes Facts 2012; 5:155-64. [PMID: 22647299 DOI: 10.1159/000338328] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 02/09/2012] [Indexed: 11/19/2022] Open
Abstract
The ongoing epidemics of obesity is one main health concern of the present time. Overeating in some obese individuals shares similarities with the loss of control and compulsive behavior observed in drug-addicted subjects, suggesting that obesity may involve food addiction. Here, we review the contributions provided by the use of positron emission tomography to the current understanding of the cerebral control of obesity and food intake in humans. The available studies have shown that multiple areas in the brain are involved with the reward properties of food, such as prefrontal, orbitofrontal, somatosensory cortices, insula, thalamus, hypothalamus, amygdala, and others. This review summarizes the current evidence, supporting the concepts that i) regions involved in the somatosensory response to food sight, taste, and smell are activated by palatable foods and may be hyperresponsive in obese individuals, ii) areas controlling executive drive seem to overreact to the anticipation of pleasure during cue exposure, and iii) those involved in cognitive control and inhibitory behavior may be resistant to the perception of reward after food exposure in obese subjects. All of these features may stimulate, for different reasons, ingestion of highly palatable and energy-rich foods. Though these same regions are similarly involved in drug abusers and game-addicted individuals, any direct resemblance may be an oversimplification, especially as the heterogeneities between studies and the prevalent exclusion of sensitive groups still limit a coherent interpretation of the findings. Further work is required to comprehensively tackle the multifaceted phenotype of obesity and identify the role of food dependency in its pathophysiology.
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Affiliation(s)
- Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
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11
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Zhang XY, Yang HD, Zhang Q, Wang Z, Wang DH. Increased feeding and food hoarding following food deprivation are associated with activation of dopamine and orexin neurons in male Brandt's voles. PLoS One 2011; 6:e26408. [PMID: 22046281 PMCID: PMC3203142 DOI: 10.1371/journal.pone.0026408] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 09/26/2011] [Indexed: 11/18/2022] Open
Abstract
Small mammals usually face energetic challenges, such as food shortage, in the field. They have thus evolved species-specific adaptive strategies for survival and reproductive success. In the present study, we examined male Brandt's voles (Lasiopodomys brandtii) for their physiological, behavioral, and neuronal responses to food deprivation (FD) and subsequent re-feeding. Although 48 hr FD induced a decrease in body weight and the resting metabolic rate (RMR), such decreases did not reach statistical significance when compared to the control males that did not experience FD. During the first 2 hr of re-feeding following 48 hr FD, voles showed higher levels of feeding than controls. However, when permitted to hoard food, FD voles showed an increase in food hoarding, rather than feeding, compared to the controls. Further, both feeding and food hoarding induced an increase in neuronal activation, measured by Fos-ir, in a large number of brain areas examined. Interestingly, feeding and food hoarding also induced an increase in the percentage of tyrosine hydroxylase immunoreactive (TH-ir) cells that co-expressed Fos-ir in the ventral tegmental area (VTA), whereas both FD and feeding induced an increase in the percentage of orexin-ir cells that co-expressed Fos-ir in the lateral hypothalamus (LH). Food hoarding also increased orexin-ir/Fos-ir labeling in the LH. Together, our data indicate that food-deprived male Brandt's voles display enhanced feeding or food hoarding dependent upon an environmental setting. In addition, changes in central dopamine and orexin activities in selected brain areas are associated with feeding and hoarding behaviors following FD and subsequent re-feeding.
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Affiliation(s)
- Xue-Ying Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Hui-Di Yang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qiang Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Zuoxin Wang
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida, United States of America
| | - De-Hua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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