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Ski regulates the inflammatory response of reactive astrocytes induced by oxygen glucose deprivation/reoxygenation (OGD/R) through the NF-κB pathway. Neuroscience 2022; 490:250-263. [PMID: 35339646 DOI: 10.1016/j.neuroscience.2022.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 01/07/2022] [Accepted: 02/14/2022] [Indexed: 10/18/2022]
Abstract
Spinal cord injury (SCI) is a common disease of the nervous system, including primary and secondary injuries.Neuronal inflammation after SCI is the most important pathological process of SCI and a chemical barrier to nerve function recovery after injury.Ski, an evolutionarily conserved functional transcriptional regulator protein, is upregulated in reactive astrocytes after SCI and regulates the biological characteristics of astrocytes. However, its role in the glial inflammatory response triggered by reactive astrocytes after spinal cord ischemia and its exact mechanism remains unclear. This study investigated the role and mechanism of Ski in the inflammatory response triggered by reactive astrocytes induced by oxygen and sugar deprivation/reoxygenation (OGD/R) model in vitro. In the ODG/R model, Ski expression was upregulated.In contrast, Ski upregulation was accompanied by increased levels of iNOS, IL-1β, IL-6, TNF-α, and other inflammation-related factors.These results indicated that the inflammatory response triggered by astrocytes was significantly enhanced in OGD/R-stimulated astrocytes. Astrocytes were transfected with Ski specific siRNA to knock out Ski and subsequently attenuate OGD-induced astrocyte-triggered inflammation.Our results also suggest that Ski downregulation downregulates the expression of iNOS, IL-1β, IL-6, and TNF-α in OGD/R-induced reactive astrocytes by inhibiting the activity of the NF-κB signaling pathway. In conclusion, downregulation of Ski can effectively inhibit glial inflammation in SCI by inhibiting the activity of the NF-κB pathway.These findings suggest that Ski is a promising therapeutic target for inflammatory responses after SCI.In conclusion, Ski downregulation can effectively inhibit glial inflammation in SCI by inhibiting the activity of the NF-κB pathway. These findings suggest that Ski might serve as a promising target for the treatment of inflammatory responses after SCI.
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Da CM, Liao HY, Deng YS, Zhao GH, Ma L, Zhang HH. Transcription Factor SP2 Regulates Ski-mediated Astrocyte Proliferation In Vitro. Neuroscience 2021; 479:22-34. [PMID: 34687796 DOI: 10.1016/j.neuroscience.2021.10.013] [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: 07/02/2021] [Revised: 09/24/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
Transcription factors bind specific sequences upstream of the 5' end of their target genes to ensure proper spatiotemporal expression of the target gene. This study aims to demonstrate that the transcription factor SP2 regulates expression of the Ski gene, which has specific binding sites for SP2, and thus enables Ski to regulate astrocyte proliferation. The upstream regulation mechanism of astrocyte proliferation was explored to further regulate the formation of glial scar in specific time and space after spinal cord injury. JASPAR and UCSC databases were used to predict transcription factor binding and the threshold was gradually reduced to screen transcription factors upstream of Ski, leading to the identification of SP2. Next, we analyzed the correlation between the expression of SP2 and Ski in normal astrocytes and reactive astrocytes, as well as the changes in astrocyte proliferation. To confirm that SP2 regulates Ski during astrocyte proliferation, astrocytes were transfected siRNA targeting SP2 and then astrocyte proliferation were analyzed. Finally, a dual luciferase reporter assay and Chromatin immunoprecipitation (ChIP) assay confirmed that the promoter region of Ski contained a specific SP2 binding site. This is the first that SP2 has been identified and confirmed to play an important role in astrocyte proliferation by regulating Ski expression. These results may help identify novel targets for the treatment of spinal cord injury.
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Affiliation(s)
- Chao-Ming Da
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Gansu Provincial Maternal and Child Health Hospital, 143Qilihe North Street, Lanzhou 730050, PR China
| | - Hai-Yang Liao
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China
| | - Yin-Shuan Deng
- Gansu Provincial Maternal and Child Health Hospital, 143Qilihe North Street, Lanzhou 730050, PR China
| | - Guang-Hai Zhao
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Gansu Provincial Maternal and Child Health Hospital, 143Qilihe North Street, Lanzhou 730050, PR China
| | - Lin Ma
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Gansu Provincial Maternal and Child Health Hospital, 143Qilihe North Street, Lanzhou 730050, PR China
| | - Hai-Hong Zhang
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China.
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3
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Li G, Liu J, Guan Y, Ji X. The role of hypoxia in stem cell regulation of the central nervous system: From embryonic development to adult proliferation. CNS Neurosci Ther 2021; 27:1446-1457. [PMID: 34817133 PMCID: PMC8611781 DOI: 10.1111/cns.13754] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/28/2021] [Accepted: 10/03/2021] [Indexed: 12/12/2022] Open
Abstract
Hypoxia is involved in the regulation of various cell functions in the body, including the regulation of stem cells. The hypoxic microenvironment is indispensable from embryonic development to the regeneration and repair of adult cells. In addition to embryonic stem cells, which need to maintain their self-renewal properties and pluripotency in a hypoxic environment, adult stem cells, including neural stem cells (NSCs), also exist in a hypoxic microenvironment. The subventricular zone (SVZ) and hippocampal dentate gyrus (DG) are the main sites of adult neurogenesis in the brain. Hypoxia can promote the proliferation, migration, and maturation of NSCs in these regions. Also, because most neurons in the brain are non-regenerative, stem cell transplantation is considered as a promising strategy for treating central nervous system (CNS) diseases. Hypoxic treatment also increases the effectiveness of stem cell therapy. In this review, we firstly describe the role of hypoxia in different stem cells, such as embryonic stem cells, NSCs, and induced pluripotent stem cells, and discuss the role of hypoxia-treated stem cells in CNS diseases treatment. Furthermore, we highlight the role and mechanisms of hypoxia in regulating adult neurogenesis in the SVZ and DG and adult proliferation of other cells in the CNS.
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Affiliation(s)
- Gaifen Li
- Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Institute of Brain DisordersCapital Medical UniversityBeijingChina
- Department of NeurosurgeryXuanwu HospitalCapital Medical UniversityBeijingChina
| | - Jia Liu
- Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Institute of Brain DisordersCapital Medical UniversityBeijingChina
| | - Yuying Guan
- Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Institute of Brain DisordersCapital Medical UniversityBeijingChina
- Department of NeurosurgeryXuanwu HospitalCapital Medical UniversityBeijingChina
| | - Xunming Ji
- Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Institute of Brain DisordersCapital Medical UniversityBeijingChina
- Department of NeurosurgeryXuanwu HospitalCapital Medical UniversityBeijingChina
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Liao HY, Da CM, Wu ZL, Zhang HH. Ski: Double roles in cancers. Clin Biochem 2020; 87:1-12. [PMID: 33188772 DOI: 10.1016/j.clinbiochem.2020.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/29/2020] [Accepted: 10/31/2020] [Indexed: 02/07/2023]
Abstract
The Ski (Sloan-Kettering Institute) is an evolutionarily conserved protein that plays a dual role as an oncoprotein and tumor suppressor gene in the development of human cancer. The Ski oncogene was first identified as a transforming protein of the avian Sloan-Kettering retrovirus in 1986. Since its discovery, Ski has been identified as a carcinogenic regulator in a variety of malignant tumors. Later, it was reported that Ski regulates the occurrence and development of some cancers by acting as an oncogene. Ski mediates the proliferation, differentiation, metastasis, and invasion of numerous cancer cells through various mechanisms. Several studies have shown that Ski expression is correlated with the clinical characteristics of cancer patients and is a promising biomarker and therapeutic target for cancer. In this review, we summarize the mechanisms and potential clinical implications of Ski in dimorphism, cancer occurrence, and progression in various types of cancer.
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Affiliation(s)
- Hai-Yang Liao
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730000, PR China
| | - Chao-Ming Da
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730000, PR China
| | - Zuo-Long Wu
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730000, PR China
| | - Hai-Hong Zhang
- The Second Clinical Medical College of Lanzhou University, 82 Cuiying Men, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730000, PR China.
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Barialai L, Strecker MI, Luger AL, Jäger M, Bruns I, Sittig ACM, Mildenberger IC, Heller SM, Delaidelli A, Lorenz NI, Voss M, Ronellenfitsch MW, Steinbach JP, Burger MC. AMPK activation protects astrocytes from hypoxia‑induced cell death. Int J Mol Med 2020; 45:1385-1396. [PMID: 32323755 PMCID: PMC7138264 DOI: 10.3892/ijmm.2020.4528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 02/10/2020] [Indexed: 01/20/2023] Open
Abstract
Adenosine monophosphate (AMP)-activated protein kinase (AMPK) is a major cellular energy sensor that is activated by an increase in the AMP/adenosine triphosphate (ATP) ratio. This causes the initiation of adaptive cellular programs, leading to the inhibition of anabolic pathways and increasing ATP synthesis. AMPK indirectly inhibits mammalian target of rapamycin (mTOR) complex 1 (mTORC1), a serine/threonine kinase and central regulator of cell growth and metabolism, which integrates various growth inhibitory signals, such as the depletion of glucose, amino acids, ATP and oxygen. While neuroprotective approaches by definition focus on neurons, that are more sensitive under cell stress conditions, astrocytes play an important role in the cerebral energy homeostasis during ischemia. Therefore, the protection of astrocytic cells or other glial cells may contribute to the preservation of neuronal integrity and function. In the present study, it was thus hypothesized that a preventive induction of energy deprivation-activated signaling pathways via AMPK may protect astrocytes from hypoxia and glucose deprivation. Hypoxia-induced cell death was measured in a paradigm of hypoxia and partial glucose deprivation in vitro in the immortalized human astrocytic cell line SVG. Both the glycolysis inhibitor 2-deoxy-d-glucose (2DG) and the AMPK activator A-769662 induced the phosphorylation of AMPK, resulting in mTORC1 inhibition, as evidenced by a decrease in the phosphorylation of the target ribosomal protein S6 (RPS6). Treatment with both 2DG and A-769662 also decreased glucose consumption and lactate production. Furthermore, A-769662, but not 2DG induced an increase in oxygen consumption, possibly indicating a more efficient glucose utilization through oxidative phosphorylation. Hypoxia-induced cell death was profoundly reduced by treatment with 2DG or A-769662. On the whole, the findings of the present study demonstrate, that AMPK activation via 2DG or A-769662 protects astrocytes under hypoxic and glucose-depleted conditions.
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Affiliation(s)
- Leli Barialai
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Maja I Strecker
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Anna-Luisa Luger
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Manuel Jäger
- Department of Dermatology, Venerology and Allergology, University Hospital Frankfurt, Goethe University, D-60590 Frankfurt am Main
| | - Ines Bruns
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Alina C M Sittig
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Iris C Mildenberger
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Sonja M Heller
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Alberto Delaidelli
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Nadja I Lorenz
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Martin Voss
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Michael W Ronellenfitsch
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Joachim P Steinbach
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
| | - Michael C Burger
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, D-60528 Frankfurt am Main, Germany
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Cheng X, Yeung PKK, Zhong K, Zilundu PLM, Zhou L, Chung SK. Astrocytic endothelin-1 overexpression promotes neural progenitor cells proliferation and differentiation into astrocytes via the Jak2/Stat3 pathway after stroke. J Neuroinflammation 2019; 16:227. [PMID: 31733648 PMCID: PMC6858703 DOI: 10.1186/s12974-019-1597-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
Background Endothelin-1 (ET-1) is synthesized and upregulated in astrocytes under stroke. We previously demonstrated that transgenic mice over-expressing astrocytic ET-1 (GET-1) displayed more severe neurological deficits characterized by a larger infarct after transient middle cerebral artery occlusion (tMCAO). ET-1 is a known vasoconstrictor, mitogenic, and a survival factor. However, it is unclear whether the observed severe brain damage in GET-1 mice post stroke is due to ET-1 dysregulation of neurogenesis by altering the stem cell niche. Methods Non-transgenic (Ntg) and GET-1 mice were subjected to tMCAO with 1 h occlusion followed by long-term reperfusion (from day 1 to day 28). Neurological function was assessed using a four-point scale method. Infarct area and volume were determined by 2,3,5-triphenyltetra-zolium chloride staining. Neural stem cell (NSC) proliferation and migration in subventricular zone (SVZ) were evaluated by immunofluorescence double labeling of bromodeoxyuridine (BrdU), Ki67 and Sox2, Nestin, and Doublecortin (DCX). NSC differentiation in SVZ was evaluated using the following immunofluorescence double immunostaining: BrdU and neuron-specific nuclear protein (NeuN), BrdU and glial fibrillary acidic protein (GFAP). Phospho-Stat3 (p-Stat3) expression detected by Western-blot and immunofluorescence staining. Results GET-1 mice displayed a more severe neurological deficit and larger infarct area after tMCAO injury. There was a significant increase of BrdU-labeled progenitor cell proliferation, which co-expressed with GFAP, at SVZ in the ipsilateral side of the GET-1 brain at 28 days after tMCAO. p-Stat3 expression was increased in both Ntg and GET-1 mice in the ischemia brain at 7 days after tMCAO. p-Stat3 expression was significantly upregulated in the ipsilateral side in the GET-1 brain than that in the Ntg brain at 7 days after tMCAO. Furthermore, GET-1 mice treated with AG490 (a JAK2/Stat3 inhibitor) sh owed a significant reduction in neurological deficit along with reduced infarct area and dwarfed astrocytic differentiation in the ipsilateral brain after tMCAO. Conclusions The data indicate that astrocytic endothelin-1 overexpression promotes progenitor stem cell proliferation and astr ocytic differentiation via the Jak2/Stat3 pathway.
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Affiliation(s)
- Xiao Cheng
- Department of Neurology, Guangdong Provincial Hospital of Traditional Chinese Medicine, 111 Dade Road, Guangzhou, 510120, China. .,School of Biomedical Sciences, The University of Hong Kong, HKSAR, China. .,The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou, 510405, China. .,Guangdong Provincial Chinese Emergency Key Laboratory, Guangzhou, 510120, China. .,State Key Laboratory of Dampness Syndrome of Traditional Chinese Medicine, Guangzhou, 510120, China.
| | - Patrick K K Yeung
- School of Biomedical Sciences, The University of Hong Kong, HKSAR, China
| | - Ke Zhong
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Prince L M Zilundu
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Lihua Zhou
- Department of Anatomy, Zhong Shan School of Medicine, Sun Yat-Sen University, Guangdong Province, Guangzhou, China
| | - Sookja K Chung
- Faculty of Medicine, Macau University of Science and Technology, Macau, China. .,School of Biomedical Sciences, The University of Hong Kong, HKSAR, China.
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7
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Zhao X, Fang Y, Wang X, Yang Z, Li D, Tian M, Kang P. Knockdown of Ski decreases osteosarcoma cell proliferation and migration by suppressing the PI3K/Akt signaling pathway. Int J Oncol 2019; 56:206-218. [PMID: 31746363 PMCID: PMC6910224 DOI: 10.3892/ijo.2019.4914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 10/23/2019] [Indexed: 02/05/2023] Open
Abstract
Ski, an evolutionary conserved protein, is involved in the development of a number of tumors, such as Barrett's esophagus, leukemia, colorectal cancer, gastric cancer, pancreatic cancer, hemangiomas and melanoma. However, studies on the functions of Ski in osteosarcoma (OS) are limited. In this study, firstly the differential expression of Ski in OS tissues and osteochondroma tissues was detected, and the expression of Ski in both human OS cell lines (MG63 and U2OS) and normal osteoblasts (hFoB1.19) was then detected. The results demonstrated that Ski expression was significantly upregulated in both human OS tissues and cell lines. The results led us to hypothesize that Ski may play an essential role in the pathological process of OS. Thus, Ski specific small interfere RNA (Ski-siRNA) was used. The results revealed that OS cell proliferation was markedly inhibited following the knockdown of Ski, which was identified by CCK8 assay, EdU staining and cell cycle analysis. In addition, OS cell migration was significantly suppressed following Ski knockdown, which was identified by wound healing assay. Moreover, the protein levels of p-PI3K and p-Akt in OS cells declined prominently following Ski knockdown. On the whole, the findings of this study revealed that Ski expression was significantly upregulated in OS tissue and OS cells. The knockdown of Ski decreased OS cell proliferation and migration, which was mediated by blocking the PI3K/Akt signaling pathway. Thus, Ski may act as a tumor promoter gene in tumorigenesis, and Ski may prove to be a potential therapeutic target for the treatment of OS.
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Affiliation(s)
- Xin Zhao
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yuying Fang
- Weifang Maternal and Child Health Hospital, Weifang, Shandong 261000, P.R. China
| | - Xingwen Wang
- The Second Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730030, P.R. China
| | - Zhouyuan Yang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Donghai Li
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Meng Tian
- Neurosurgery Research Laboratory, West China Hospital, Sichuan Univerisity, Chengdu, Sichuan 610041, P.R. China
| | - Pengde Kang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Savory K, Manivannan S, Zaben M, Uzun O, Syed YA. Impact of copy number variation on human neurocognitive deficits and congenital heart defects: A systematic review. Neurosci Biobehav Rev 2019; 108:83-93. [PMID: 31682886 DOI: 10.1016/j.neubiorev.2019.10.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/26/2019] [Indexed: 12/16/2022]
Abstract
Copy number variant (CNV) syndromes are often associated with both neurocognitive deficits (NCDs) and congenital heart defects (CHDs). Children and adults with cardiac developmental defects likely to have NCDs leading to increased risk of hospitalisation and reduced level of independence. To date, the association between these two phenotypes have not been explored in relation to CNV syndromes. In order to address this question, we systematically reviewed the prevalence of CHDs in a range of CNV syndromes associated with NCDs. A meta-analysis showed a relationship with the size of CNV and its association with both NCDs and CHDs, and also inheritance pattern. To our knowledge, this is the first review to establish association between NCD and CHDs in CNV patients, specifically in relation to the severity of NCD. Importantly, we also found specific types of CHDs were associated with severe neurocognitive deficits. Finally, we discuss the implications of these results for patients in the clinical setting which warrants further exploration of this association in order to lead an improvement in the quality of patient's life.
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Affiliation(s)
- Katrina Savory
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK; School of Bioscience, The Sir Martin Evans Building, Museum Ave, Cardiff, CF10 3AX, UK
| | - Susruta Manivannan
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK
| | - Malik Zaben
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK
| | - Orhan Uzun
- University Hospital of Wales, Heath Park, Cardiff, CF10 3AX, UK
| | - Yasir Ahmed Syed
- Neuroscience and Mental Health Research Institute (NMHRI), Hadyn Ellis Building, Cathays, CF24 4HQ, Cardiff, UK; School of Bioscience, The Sir Martin Evans Building, Museum Ave, Cardiff, CF10 3AX, UK.
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Toro-Urrego N, Vesga-Jiménez DJ, Herrera MI, Luaces JP, Capani F. Neuroprotective Role of Hypothermia in Hypoxic-ischemic Brain Injury: Combined Therapies using Estrogen. Curr Neuropharmacol 2019; 17:874-890. [PMID: 30520375 PMCID: PMC7052835 DOI: 10.2174/1570159x17666181206101314] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/26/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
Hypoxic-ischemic brain injury is a complex network of factors, which is mainly characterized by a decrease in levels of oxygen concentration and blood flow, which lead to an inefficient supply of nutrients to the brain. Hypoxic-ischemic brain injury can be found in perinatal asphyxia and ischemic-stroke, which represent one of the main causes of mortality and morbidity in children and adults worldwide. Therefore, knowledge of underlying mechanisms triggering these insults may help establish neuroprotective treatments. Selective Estrogen Receptor Modulators and Selective Tissue Estrogenic Activity Regulators exert several neuroprotective effects, including a decrease of reactive oxygen species, maintenance of cell viability, mitochondrial survival, among others. However, these strategies represent a traditional approach of targeting a single factor of pathology without satisfactory results. Hence, combined therapies, such as the administration of therapeutic hypothermia with a complementary neuroprotective agent, constitute a promising alternative. In this sense, the present review summarizes the underlying mechanisms of hypoxic-ischemic brain injury and compiles several neuroprotective strategies, including Selective Estrogen Receptor Modulators and Selective Tissue Estrogenic Activity Regulators, which represent putative agents for combined therapies with therapeutic hypothermia.
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Affiliation(s)
- Nicolás Toro-Urrego
- Address correspondence to this author at the Laboratorio de Citoarquitectura y Plasticidad Neuronal, Instituto de Investigaciones Cardiológicas, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina; E-mail:
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