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G N S HS, Marise VLP, Satish KS, Yergolkar AV, Krishnamurthy M, Ganesan Rajalekshmi S, Radhika K, Burri RR. Untangling huge literature to disinter genetic underpinnings of Alzheimer's Disease: A systematic review and meta-analysis. Ageing Res Rev 2021; 71:101421. [PMID: 34371203 DOI: 10.1016/j.arr.2021.101421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/25/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022]
Abstract
Drug discovery for Alzheimer's Disease (AD) is channeled towards unravelling key disease specific drug targets/genes to predict promising therapeutic candidates. Though enormous literature on AD genetics is available, there exists dearth in data pertinent to drug targets and crucial pathological pathways intertwined in disease progression. Further, the research findings revealing genetic associations failed to demonstrate consistency across different studies. This scenario prompted us to initiate a systematic review and meta-analysis with an aim of unearthing significant genetic hallmarks of AD. Initially, a Boolean search strategy was developed to retrieve case-control studies from PubMed, Cochrane, ProQuest, Europe PMC, grey literature and HuGE navigator. Subsequently, certain inclusion and exclusion criteria were framed to shortlist the relevant studies. These studies were later critically appraised using New Castle Ottawa Scale and Q-Genie followed by data extraction. Later, meta-analysis was performed only for those Single Nucleotide Polymorphisms (SNPs) which were evaluated in at least two different ethnicities from two different reports. Among, 204,351 studies retrieved, 820 met our eligibility criteria and 117 were processed for systematic review after critical appraisal. Ultimately, meta-analysis was performed for 23 SNPs associated with 15 genes which revealed significant associations of rs3865444 (CD33), rs7561528 (BIN1) and rs1801133 (MTHFR) with AD risk.
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MDR-1 function protects oocyte mitochondria against the transgenerational effects of nitrogen mustard exposure. Reprod Toxicol 2020; 98:252-259. [PMID: 33164761 DOI: 10.1016/j.reprotox.2020.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/29/2020] [Accepted: 10/20/2020] [Indexed: 12/18/2022]
Abstract
Oocytes are vulnerable to alkylating agents like nitrogen mustard (NM), which can cause mitochondrial dysfunction associated with increased oxidative stress. Because mitochondria are maternally inherited, NM exposure affects oocyte mitochondrial physiology and compromises future progeny. Multidrug resistance transporters (MDRs) are transmembrane proteins that efflux such cytotoxic substances; MDR-1 is expressed in oocyte plasma and mitochondrial membranes and protects against oxidative stress. Our objective was to investigate how loss of MDR-1 can modulate oocyte response to NM transgenerationally. Wild Type (WT) and Mdr1a mutant female mice were injected intraperitoneally with sterile saline (control) or 0.1 mg/kg NM. 48 h post-injection, females were either sacrificed for F0 studies or mated with control males to yield F1 pups. After weaning, F1 females were sacrificed or mated to yield F2 pups. Germinal vesicle oocytes were assessed for mitochondrial membrane potential and reactive oxygen species (ROS) levels. NM exposed oocytes of both genotypes exhibited significantly higher ROS than controls in F0 and F1. NM F2 oocytes of neither genotype exhibited significantly higher ROS, though variation in Mdr1a mutants led to an upward trend. NM oocytes of both genotypes exhibited significantly disrupted mitochondrial membrane potential in F0. WT regained normalcy by F1 whereas Mdr1a mutants were unable to by F2. Our data suggest that Mdr1a mutants exhibit transgenerational mitochondrial dysfunction following toxic challenge that persists, implying that MDR-1 protects against toxicant-induced mitochondrial stress. Women without functional MDR-1 exposed to environmental toxicants could therefore be at risk for passing on compromised mitochondria to future offspring.
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Seo J, Lee C, Paeng JC, Kwon HW, Lee D, Kim S, Han J, Ku J, Chae JH, Lim BC, Choi M. Biallelic mutations in ABCB1 display recurrent reversible encephalopathy. Ann Clin Transl Neurol 2020; 7:1443-1449. [PMID: 32627353 PMCID: PMC7448192 DOI: 10.1002/acn3.51125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 12/27/2022] Open
Abstract
The clinical phenotype linked with mutations in ABCB1, encoding P‐glycoprotein, has never been reported. Here, we describe twin sisters with biallelic mutations in ABCB1 who showed recurrent reversible encephalopathy accompanied by acute febrile or afebrile illness. Whole‐exome sequencing was performed on one of the twin and her healthy parents, and revealed compound heterozygous loss‐of‐function variants in ABCB1. The patient brains displayed substantial loss of xenobiotic clearance ability, as demonstrated by [11C]verapamil positron emission tomography (PET) study, linking this phenotype with ABCB1 function. The endogenous cytokine clearance from the brain was also decreased in LPS‐treated ABCB1 knockout mice compared to controls. The results provide insights into the physiological requirement of ABCB1 in maintaining homeostasis of various compounds for normal brain function.
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Affiliation(s)
- Jieun Seo
- Department of Biomedical SciencesSeoul National University College of MedicineSeoulRepublic of Korea
| | - Cho‐Rong Lee
- Department of Biomedical SciencesSeoul National University College of MedicineSeoulRepublic of Korea
| | - Jin Chul Paeng
- Department of Nuclear MedicineSeoul National University College of MedicineSeoulRepublic of Korea
| | - Hyun W. Kwon
- Department of Nuclear MedicineKorea University Anam HospitalSeoulRepublic of Korea
| | - Duckgue Lee
- Soonchunhyang Institute of Medi‐Bio ScienceSoonchunhyang UniversityCheonanRepublic of Korea
| | - Soon‐Chan Kim
- Department of Biomedical SciencesSeoul National University College of MedicineSeoulRepublic of Korea
| | - Jaeseok Han
- Soonchunhyang Institute of Medi‐Bio ScienceSoonchunhyang UniversityCheonanRepublic of Korea
| | - Ja‐Lok Ku
- Department of Biomedical SciencesSeoul National University College of MedicineSeoulRepublic of Korea
| | - Jong Hee Chae
- Department of PediatricsSeoul National University College of MedicineSeoulRepublic of Korea
| | - Byung Chan Lim
- Department of PediatricsSeoul National University College of MedicineSeoulRepublic of Korea
| | - Murim Choi
- Department of Biomedical SciencesSeoul National University College of MedicineSeoulRepublic of Korea
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Cacabelos R. Pharmacogenetic considerations when prescribing cholinesterase inhibitors for the treatment of Alzheimer's disease. Expert Opin Drug Metab Toxicol 2020; 16:673-701. [PMID: 32520597 DOI: 10.1080/17425255.2020.1779700] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Cholinergic dysfunction, demonstrated in the late 1970s and early 1980s, led to the introduction of acetylcholinesterase inhibitors (AChEIs) in 1993 (Tacrine) to enhance cholinergic neurotransmission as the first line of treatment against Alzheimer's disease (AD). The new generation of AChEIs, represented by Donepezil (1996), Galantamine (2001) and Rivastigmine (2002), is the only treatment for AD to date, together with Memantine (2003). AChEIs are not devoid of side-effects and their cost-effectiveness is limited. An option to optimize the correct use of AChEIs is the implementation of pharmacogenetics (PGx) in the clinical practice. AREAS COVERED (i) The cholinergic system in AD, (ii) principles of AD PGx, (iii) PGx of Donepezil, Galantamine, Rivastigmine, Huperzine and other treatments, and (iv) practical recommendations. EXPERT OPINION The most relevant genes influencing AChEI efficacy and safety are APOE and CYPs. APOE-4 carriers are the worst responders to AChEIs. With the exception of Rivastigmine (UGT2B7, BCHE-K), the other AChEIs are primarily metabolized via CYP2D6, CYP3A4, and UGT enzymes, with involvement of ABC transporters and cholinergic genes (CHAT, ACHE, BCHE, SLC5A7, SLC18A3, CHRNA7) in most ethnic groups. Defective variants may affect the clinical response to AChEIs. PGx geno-phenotyping is highly recommended prior to treatment.
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Affiliation(s)
- Ramón Cacabelos
- Department of Genomic Medicine, EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine , Bergondo, Corunna, Spain
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Sharafeldin N, Richman J, Bosworth A, Chen Y, Singh P, Patel SK, Wang X, Francisco L, Forman SJ, Wong FL, Bhatia S. Clinical and Genetic Risk Prediction of Cognitive Impairment After Blood or Marrow Transplantation for Hematologic Malignancy. J Clin Oncol 2020; 38:1312-1321. [PMID: 32083992 DOI: 10.1200/jco.19.01085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Using a candidate gene approach, we tested the hypothesis that individual single nucleotide polymorphisms (SNPs) and gene-level variants are associated with cognitive impairment in patients with hematologic malignancies treated with blood or marrow transplantation (BMT) and that inclusion of these SNPs improves risk prediction beyond that offered by clinical and demographic characteristics. PATIENTS AND METHODS In the discovery cohort, BMT recipients underwent a standardized battery of neuropsychological tests pre-BMT and at 6 months, 1 year, 2 years, and 3 years post-BMT. Associations between 68 candidate genes and cognitive impairment were assessed using generalized estimating equation models. Elastic-Net regression was used to build Base (sociodemographic), Clinical, and Combined (Base plus Clinical plus genetic) risk prediction models of post-BMT impairment. An independent nonoverlapping cohort from the BMT Survivor Study with self-report of learning/memory problems (as identified by their health care provider) was used for model replication. RESULTS The discovery cohort included 277 participants (58.5% males; 68.6% non-Hispanic whites; and 46.6% allogeneic BMT recipients). Adjusting for BMT type, age at BMT, sex, race/ethnicity, and cognitive reserve, SNPs in the blood-brain barrier, telomere homeostasis, and DNA repair genes were significantly associated with cognitive impairment. Compared with the Clinical Model, the Combined Model had higher predictive power in both the discovery cohort (mean area under the receiver operating characteristic curve [AUC], 0.89; 95% CI, 0.85 to 0.93 v 0.77; 95% CI, 0.71 to 0.83; P = 1.24 × 10-9) and the replication cohort (AUC, 0.71; 95% CI, 0.66 to 0.76 v 0.63; 95% CI, 0.57 to 0.68; P = .004). CONCLUSION Inclusion of candidate genetic variants enhanced the prediction of risk of post-BMT cognitive impairment beyond that offered by demographic/clinical characteristics and represents a step toward a personalized approach to managing patients at high risk for cognitive impairment after BMT.
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Affiliation(s)
- Noha Sharafeldin
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Joshua Richman
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | | | - Yanjun Chen
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Purnima Singh
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | | | - Xuexia Wang
- Department of Mathematics, University of North Texas, Denton, TX
| | - Liton Francisco
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Stephen J Forman
- Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA
| | | | - Smita Bhatia
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
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Chai AB, Leung GKF, Callaghan R, Gelissen IC. P‐glycoprotein: a role in the export of amyloid‐β in Alzheimer's disease? FEBS J 2019; 287:612-625. [DOI: 10.1111/febs.15148] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/09/2019] [Accepted: 11/19/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Amanda B. Chai
- School of Pharmacy Faculty of Medicine and Health University of Sydney Australia
| | - Gavin K. F. Leung
- School of Pharmacy Faculty of Medicine and Health University of Sydney Australia
| | - Richard Callaghan
- Research School of Biology and Medical School Australian National University Canberra Australia
| | - Ingrid C. Gelissen
- School of Pharmacy Faculty of Medicine and Health University of Sydney Australia
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7
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Clark H, Knapik LO, Zhang Z, Wu X, Naik MT, Oulhen N, Wessel GM, Brayboy LM. Dysfunctional MDR-1 disrupts mitochondrial homeostasis in the oocyte and ovary. Sci Rep 2019; 9:9616. [PMID: 31270386 PMCID: PMC6610133 DOI: 10.1038/s41598-019-46025-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 06/13/2019] [Indexed: 01/08/2023] Open
Abstract
Multidrug resistance transporters (MDRs) are best known for their pathological role in neoplastic evasion of chemotherapeutics and antibiotics. Here we show that MDR-1 is present in the oocyte mitochondrial membrane, and it protects the female gamete from oxidative stress. Female mdr1a mutant mice have no significant difference in ovarian follicular counts and stages, nor in reproductively functioning hormone levels, yet these mice are significantly more vulnerable to gonadotoxic chemotherapy, have chronically elevated reactive oxygen species in immature germinal vesicle oocytes, exhibit a significant over-accumulation of metabolites involved in the tricarboxylic acid cycle (TCA), and have abnormal mitochondrial membrane potential. The mdr1a mutant ovaries have a dramatically different transcriptomic profile with upregulation of genes involved in metabolism. Our findings indicate that functionality of MDR-1 reveals a critical intersection of metabolite regulation, oxidative stress, and mitochondrial dysfunction that has direct implications for human infertility, premature reproductive aging due to oxidative stress, and gonadoprotection.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/chemistry
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Animals
- Citric Acid Cycle
- Cyclophosphamide/pharmacology
- Drug Resistance, Neoplasm/genetics
- Exons
- Female
- Gene Expression
- Gene Expression Profiling
- Homeostasis/genetics
- Membrane Potential, Mitochondrial
- Mice
- Mice, Knockout
- Mitochondria/genetics
- Mitochondria/metabolism
- Mitochondria/ultrastructure
- Models, Molecular
- Mutation
- Oocytes/metabolism
- Ovary/metabolism
- Oxidative Stress
- Protein Conformation
- Reactive Oxygen Species/metabolism
- Structure-Activity Relationship
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Affiliation(s)
- Haley Clark
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, 101 Dudley Street, Providence, RI 02905, USA
| | - Laura O Knapik
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, 101 Dudley Street, Providence, RI 02905, USA
| | - Zijing Zhang
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, 101 Dudley Street, Providence, RI 02905, USA
| | - Xiaotian Wu
- School of Public Health Brown University, 121 South Main Street, Providence, RI 02903, USA
| | - Mandar T Naik
- Brown University Structural Biology Core, 70 Ship Street, Providence, RI 02903, USA
| | - Nathalie Oulhen
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, Providence, RI 02912, USA
| | - Gary M Wessel
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, Providence, RI 02912, USA
| | - Lynae M Brayboy
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, 101 Dudley Street, Providence, RI 02905, USA.
- Alpert Medical School of Brown University, 222 Richmond Street, Providence, RI 02903, USA.
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, Providence, RI 02912, USA.
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8
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Zhang C, Qin H, Zheng R, Wang Y, Yan T, Huan F, Han Y, Zhu W, Zhang L. A new approach for Alzheimer's disease treatment through P-gp regulation via ibuprofen. Pathol Res Pract 2018; 214:1765-1771. [PMID: 30139557 DOI: 10.1016/j.prp.2018.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/03/2018] [Accepted: 08/08/2018] [Indexed: 12/14/2022]
Abstract
This study was aimed to investigate whether ibuprofen could alter the P-glycoprotein expression and function under Alzheimer's Disease condition and whether this alteration was induced by the inhibition of inflammatory reaction. APP/PS1 mice were used as AD model mice and ibuprofen-treated AD mice were given ibuprofen for 5 months. Then, Abcb1a/1b mRNA levels and P-gp expression were evaluated by qRT-PCR and western blot. Abcb1 mRNA levels were significantly reduced in AD mice compared to control mice, and it could be restored by ibuprofen treatment. Meanwhile, P-gp expression result showed a similar trend. Aβ plaques in cerebral cortices and hippocampus were investigated via immunohistochemical, and the results revealed that Aβ plaques were reduced in ibuprofen-treated AD mice compared with the AD mice, indicated that P-gp function may be recovered by ibuprofen treatment. qRT-PCR and ELISA were used to determined TNF-α, IL-1β, IL-6 and NF-κB levels. The results demonstrated that TNF-α, IL-1β mRNA levels and NF-κB expression were all significantly upregulated in AD mice in comparison with the control mice, and ibuprofen treatment could suppress the increase of inflammatory factors. In conclusion, the P-gp expression and function were suppressed in AD condition by activating inflammatory reaction, and then causing the Aβ efflux decreased. However, upregulating P-gp could increase the Aβ efflux in further to treat AD via inhibiting the inflammatory factors expression.
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Affiliation(s)
- Chengxiang Zhang
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Heng Qin
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Rui Zheng
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Yubang Wang
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Ting Yan
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Fei Huan
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Yang Han
- The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Weicheng Zhu
- The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
| | - Lulu Zhang
- The Key Laboratory of Modern Toxicology of Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Safety Assessment and Research Center for Drugs, Nanjing Medical University, Nanjing 211166, Jiangsu, China.
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Pereira CD, Martins F, Wiltfang J, da Cruz e Silva OA, Rebelo S. ABC Transporters Are Key Players in Alzheimer’s Disease. J Alzheimers Dis 2017; 61:463-485. [DOI: 10.3233/jad-170639] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Cátia D. Pereira
- Department of Medical Sciences, Neuroscience and Signalling Laboratory, Institute for Biomedicine – iBiMED, University of Aveiro, Aveiro, Portugal
| | - Filipa Martins
- Department of Medical Sciences, Neuroscience and Signalling Laboratory, Institute for Biomedicine – iBiMED, University of Aveiro, Aveiro, Portugal
| | - Jens Wiltfang
- Department of Medical Sciences, Neuroscience and Signalling Laboratory, Institute for Biomedicine – iBiMED, University of Aveiro, Aveiro, Portugal
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Odete A.B. da Cruz e Silva
- Department of Medical Sciences, Neuroscience and Signalling Laboratory, Institute for Biomedicine – iBiMED, University of Aveiro, Aveiro, Portugal
| | - Sandra Rebelo
- Department of Medical Sciences, Neuroscience and Signalling Laboratory, Institute for Biomedicine – iBiMED, University of Aveiro, Aveiro, Portugal
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P-glycoprotein (ABCB1) and Oxidative Stress: Focus on Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7905486. [PMID: 29317984 PMCID: PMC5727796 DOI: 10.1155/2017/7905486] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/30/2017] [Indexed: 11/23/2022]
Abstract
ATP-binding cassette (ABC) transporters, in particular P-glycoprotein (encoded by ABCB1), are important and selective elements of the blood-brain barrier (BBB), and they actively contribute to brain homeostasis. Changes in ABCB1 expression and/or function at the BBB may not only alter the expression and function of other molecules at the BBB but also affect brain environment. Over the last decade, a number of reports have shown that ABCB1 actively mediates the transport of beta amyloid (Aβ) peptide. This finding has opened up an entirely new line of research in the field of Alzheimer's disease (AD). Indeed, despite intense research efforts, AD remains an unsolved pathology and effective therapies are still unavailable. Here, we review the crucial role of ABCB1 in the Aβ transport and how oxidative stress may interfere with this process. A detailed understanding of ABCB1 regulation can provide the basis for improved neuroprotection in AD and also enhanced therapeutic drug delivery to the brain.
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11
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Rychlik-Sych M, Barańska M, Dudarewicz M, Skrętkowicz J, Żebrowska A, Owczarek J, Waszczykowska E. ABCB1
-Gen-Polymorphismus in einer polnischen Kohorte ist mit Risiko für bullöses Pemphigoid assoziiert. J Dtsch Dermatol Ges 2017; 15:499-506. [DOI: 10.1111/ddg.13182_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/10/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Mariola Rychlik-Sych
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Małgorzata Barańska
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Michał Dudarewicz
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Jadwiga Skrętkowicz
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Agnieszka Żebrowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology; Medical University of Lodz; Łódz´ Polen
| | - Jacek Owczarek
- Department of Pharmacogenetics, Chair of Biopharmacy; Medical University of Lodz; Łódz´ Polen
| | - Elżbieta Waszczykowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology; Medical University of Lodz; Łódz´ Polen
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12
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Rychlik-Sych M, Barańska M, Dudarewicz M, Skrętkowicz J, Żebrowska A, Owczarek J, Waszczykowska E. ABCB1 gene is associated with the risk of bullous pemphigoid in a polish population. J Dtsch Dermatol Ges 2017; 15:499-505. [PMID: 28207188 DOI: 10.1111/ddg.13182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/10/2016] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND OBJECTIVES Polymorphisms in the P-glycoprotein-encoding ABCB1 gene may affect the intracellular concentration of xenobiotics, and thus contribute to the development of autoimmune diseases, including bullous pemphigoid (BP). The objective of the present study was to investigate whether there is an association between the C3435T and G2677T/A polymorphisms in the ABCB1 gene and the risk of BP in a Polish population. PATIENTS AND METHODS The study included 71 patients with BP and 156 healthy volunteers. Determination of the C3435T polymorphism was carried out using PCR-RFLP; the G2677T/A polymorphism, using allele-specific PCR. RESULTS While there was no correlation between the C3435T polymorphism and the risk of BP, we did find such an association with respect to the G2677T/A polymorphism. The relative risk of BP was more than five times greater in individuals with the 2677TA genotype (OR = 5.52, p = 0.0063), and more than twice as high in carriers of the 2677TT genotype (OR = 2.40, p = 0.0076). At 2.40 (0.000018), the OR in carriers of the 2677T allele was also increased. The greater prevalence of the 2677GG genotype and the 2677G allele in the control group, as well as the OR < 1.0 (0.22 and 0.33, respectively), suggest a protective role of the 2677G allele with respect to the development of BP. CONCLUSIONS The results of the present study indicate that the G2677T/A polymorphism in the ABCB1 gene may affect the risk of developing BP.
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Affiliation(s)
- Mariola Rychlik-Sych
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Małgorzata Barańska
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Michał Dudarewicz
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Jadwiga Skrętkowicz
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Agnieszka Żebrowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology, Medical University of Lodz, Łódź, Poland
| | - Jacek Owczarek
- Department of Pharmacogenetics, Chair of Biopharmacy, Medical University of Lodz, Łódz´, Poland
| | - Elżbieta Waszczykowska
- Department of Dermatology and Venereology, Chair of Dermatology and Venereology, Medical University of Lodz, Łódź, Poland
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13
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Zhao Y, Hou D, Feng X, Lin F, Luo J. Role of ABC transporters in the pathology of Alzheimer’s disease. Rev Neurosci 2017; 28:155-159. [PMID: 27997355 DOI: 10.1515/revneuro-2016-0060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 10/01/2016] [Indexed: 12/25/2022]
Abstract
AbstractThe ATP-binding cassette (ABC) transporter superfamily is a large family of proteins that transport specific molecules across membranes. These proteins are associated with both cholesterol metabolism and Alzheimer’s disease (AD). Cholesterol homeostasis has a key role in AD, and ABC transporters are important mediators of lipid transportation. Emerging evidence suggests that decreased expression and hypofunction of ABC transporters are crucial to the occurrence and development of AD. In the present article, we review the current knowledge regarding ABC transporters and speculate on their role in the pathogenesis of AD.
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Affiliation(s)
- Yan Zhao
- 1Department of Neurology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha HN 410013, China
| | - Deren Hou
- 1Department of Neurology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha HN 410013, China
| | - Xialu Feng
- 1Department of Neurology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha HN 410013, China
| | - Fangbo Lin
- 1Department of Neurology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha HN 410013, China
| | - Jing Luo
- 1Department of Neurology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha HN 410013, China
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Sawikr Y, Yarla NS, Peluso I, Kamal MA, Aliev G, Bishayee A. Neuroinflammation in Alzheimer's Disease. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2017; 108:33-57. [DOI: 10.1016/bs.apcsb.2017.02.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zhong X, Liu MY, Sun XH, Wei MJ. Association between ABCB1 polymorphisms and haplotypes and Alzheimer's disease: a meta-analysis. Sci Rep 2016; 6:32708. [PMID: 27600024 PMCID: PMC5013326 DOI: 10.1038/srep32708] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/12/2016] [Indexed: 01/04/2023] Open
Abstract
Although several epidemiological studies have investigated the association between ATP-binding cassette subfamily B member 1 (ABCB1) gene polymorphisms and Alzheimer's disease (AD) susceptibility, controversial results exist. Here, we performed a meta-analysis to assess whether ABCB1 polymorphisms 3435C > T (rs1045642), 2677G > T/A (rs2032582), 1236C > T (rs1128503) and haplotypes were associated with AD risk. Nine independent publications were included and analyzed. Crude odds ratio (OR) and 95% confidence interval (CI) were applied to investigate the strength of the association. Sensitivity analysis was conducted to measure the robustness of our analysis. A funnel plot and trim and fill method were used to test and adjust for publication bias. The results showed a significant association between the 3435C > T single nucleotide polymorphism (SNP) and AD susceptibility (CT vs. CC: OR = 1.24, 95% CI = 1.06-1.45, P = 0.01; CT + TT vs. CC: OR = 1.21, 95% CI = 1.04-1.41, P = 0.01) in the total population, as well as in Caucasian subgroup. The 2677G > T/A SNP was related to a decreased AD risk in Caucasian subgroup (TT + TA + AA vs. GT + GA + GG: OR = 0.68, 95% CI = 0.47-0.98, P = 0.04). Moreover, the ABCB1 haplotype analysis showed that the 1236T/2677T/3435C haplotype was associated with a higher risk of AD (OR = 1.99, 95% CI = 1.24-3.18, P = 0.00). Our results suggest that the ABCB1 3435C > T SNP, the 2677G > T/A SNP and 1236T/2677T/3435C haplotype are significantly associated with AD susceptibility.
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Affiliation(s)
- Xin Zhong
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning 110122, China
| | - Ming-Yan Liu
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning 110122, China
| | - Xiao-Hong Sun
- Department of Neurology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning 110032, China
| | - Min-Jie Wei
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning 110122, China
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Marei HE, Althani A, Suhonen J, El Zowalaty ME, Albanna MA, Cenciarelli C, Wang T, Caceci T. Common and Rare Genetic Variants Associated With Alzheimer's Disease. J Cell Physiol 2015; 231:1432-7. [PMID: 26496533 DOI: 10.1002/jcp.25225] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 10/21/2015] [Indexed: 01/19/2023]
Abstract
Alzheimer's disease (AD) is one of the most devastating disorders. Despite the continuing increase of its incidence among aging populations, no effective cure has been developed mainly due to difficulties in early diagnosis of the disease before damaging of the brain, and the failure to explore its complex underlying molecular mechanisms. Recent technological advances in genome-wide association studies (GWAS) and high throughput next generation whole genome, and exome sequencing had deciphered many of AD-related loci, and discovered single nucleotide polymorphisms (SNPs) that are associated with altered AD molecular pathways. Highlighting altered molecular pathways linked to AD pathogenesis is crucial to identify novel diagnostic and therapeutic AD targets.
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Affiliation(s)
- Hany E Marei
- Biomedical Research Center, Qatar University, Doha, Qatar
| | - Asmaa Althani
- Biomedical Research Center, Qatar University, Doha, Qatar.,Department of Health Sciences, College of Arts and Science, Qatar University, Doha, Qatar
| | - Jaana Suhonen
- Department of Neurology, Al-Ahli Hospital, Doha, Qatar
| | | | | | - Carlo Cenciarelli
- CNR-Institute of Translational Pharmacology, Via Fosso del Cavaliere, Roma-Italy
| | - Tengfei Wang
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Thomas Caceci
- Department of Biomedical Sciences, Virginia Tech Carilion School of Medicine, Roanoke, Virginia
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Wang XW, Zhang YL, Xiong Y. Impact of ABCB1 single-nucleotide polymorphisms on treatment outcomes with salmeterol/fluticasone combination therapy for stable chronic obstructive pulmonary disease. Genet Test Mol Biomarkers 2015; 19:566-72. [PMID: 26327575 DOI: 10.1089/gtmb.2015.0108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES To investigate the relationship between ABCB1 single-nucleotide polymorphisms and the efficacy of salmeterol/fluticasone combination (SFC) inhalation therapy for stable chronic obstructive pulmonary disease (COPD) in a Chinese Han population. METHODS A total of 362 patients with stable COPD were recruited between July 2012 and March 2014. Based on the therapeutic effects of lung function improvement and COPD Assessment Test (CAT) scores, all patients were either placed into the effective group (n = 138) or the ineffective group (n = 224). Three common polymorphisms (rs1045642C > T, rs1128503C > T, and rs1202184A > G) in the ABCB1 gene were analyzed by polymerase chain reaction-restriction fragment length polymorphism in these patients. All data were analyzed by SPSS version 18.0 software. RESULTS The genotype and allele frequencies of the ABCB1 rs1045642C > T polymorphic locus were significantly different between the effective group and the ineffective group under the codominant, recessive, and allele models (all p < 0.05). Haplotype analysis of ABCB1 indicated that CTA (rs1045642C-rs1128503T-rs1202184A) haplotype frequencies in the effective group were significantly lower than the ineffective group (p = 0.022), but TCG (rs1045642T-rs1128503C-rs1202184G) haplotype frequencies in the effective group were significantly higher than the ineffective group (p = 0.048). Logistic regression analysis showed that smoking history and rs1045642 CT + CC/TT may be correlated with the efficacy of SFC inhalation therapy in stable COPD patients. CONCLUSION ABCB1 rs1045642C > T polymorphism and CTA/TCG haplotypes, as well as smoking history may influence the efficacy of SFC inhalation therapy in stable COPD patients in the Chinese Han population.
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Affiliation(s)
- Xin-Wei Wang
- 1 Department of Respiratory Diseases, Hubei Zhongshan Hospital , Wuhan, People's Republic of China
| | - Yan-Lin Zhang
- 2 Department of Internal Medicine, Wuhan Institute of Tuberculosis Prevention , Wuhan, People's Republic of China
| | - Ying Xiong
- 3 Department of Laboratory, Wuhan Union Hospital , Wuhan, People's Republic of China
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