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Love RWB. Aniracetam: An Evidence-Based Model for Preventing the Accumulation of Amyloid-β Plaques in Alzheimer's Disease. J Alzheimers Dis 2024; 98:1235-1241. [PMID: 38552113 DOI: 10.3233/jad-231247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Alzheimer's disease is the leading cause of dementia in the world. It affects 6 million people in the United States and 50 million people worldwide. Alzheimer's disease is characterized by the accumulation of amyloid-β plaques (Aβ), an increase in tau protein neurofibrillary tangles, and a loss of synapses. Since the 1990s, removing and reducing Aβ has been the focus of Alzheimer's treatment and prevention research. The accumulation of Aβ can lead to oxidative stress, inflammation, neurotoxicity, and eventually apoptosis. These insults impair signaling systems in the brain, potentially leading to memory loss and cognitive decline. Aniracetam is a safe, effective, cognitive-enhancing drug that improves memory in both human and animal studies. Aniracetam may prevent the production and accumulation of Aβ by increasing α-secretase activity through two distinct pathways: 1) increasing brain derived neurotrophic factor expression and 2) positively modulating metabotropic glutamate receptors. This is the first paper to propose an evidence-based model for aniracetam reducing the accumulation and production of Aβ.
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Affiliation(s)
- Robert W B Love
- Research Department, Brain Fit For Life, LLC, Lewes, DE, USA
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2
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Su Q, Dong J, Zhang D, Yang L, Roy R. Protective Effects of the Bilobalide on Retinal Oxidative Stress and Inflammation in Streptozotocin-Induced Diabetic Rats. Appl Biochem Biotechnol 2022; 194:6407-6422. [PMID: 35932369 DOI: 10.1007/s12010-022-04012-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2022] [Indexed: 12/01/2022]
Abstract
Diabetic retinopathy (DR) is a diabetes mellitus (DM) complication that causes visual acuity impairment and loss of sight in the working population, mainly in developed countries. According to the WHO, DR accounts for 5% of the world's 37 million blind people. The prevalence of diabetic retinopathy was highest in Africa, followed by North America and the Caribbean and South and Central America. Hyperglycemia can generate excessive ROS that activates multiple pathways, which can damage the cells. Oxidative stress and inflammatory process are intricate in the DR pathological mechanism. Bilobalide is the main bioactive compound isolated from the Ginkgo biloba, a plant utilized in folklore medicine. Bilobalide, a sesquiterpene trilactone, exhibits excellent antioxidant activity. But the molecular mechanisms associated with such effects, especially the antioxidant-related mechanism, have not been documented. Hence, this investigation explored whether bilobalide may attenuate DR in streptozotocin (STZ)-prompted diabetic rats. The effects of bilobalide on parameters of antioxidant content, oxidative stress, and inflammatory factors in the retinal tissues were evaluated by ELISA, RT-PCR, and immunohistochemistry methods. Bilobalide improved caloric management by reducing food consumption and increasing body weight. Furthermore, the administration of bilobalide decreases the blood glucose level and glycosylated (HbA1c) hemoglobin. The anti-retinopathy activity of bilobalide was established by the increase in the total retina thickness (TRT), inner nuclear layer (INL), and outer nuclear layer (ONL) in diabetic rats. Additionally, the serum level of MDA was decreased. In contrast, the antioxidant enzyme (SOD and CAT) levels were increased with TAC plus lower Keap1 and higher Nrf2 expression in the retina when associated with the DM rats. Moreover, bilobalide increased the nuclear factor erythroid 2-related factor 2 (Nrf2) and Heme oxygenase-1 (HO-1) expression level and inflammatory mediators (NF-κβ p65, TNF-α, IL-1β, and VEGF), thus inhibiting oxidative stress. Bilobalide can be effective against DR, and the possible mechanism may be relatively elucidated by decreasing oxidative stress and anti-inflammatory activities. But the further investigation should be directed to expose the precise mechanism.
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Affiliation(s)
- Qiang Su
- Department of Ophthalmology, The First Hospital of Shanxi Medical University, Taiyuan, 030001, China.
| | - Jing Dong
- Department of Ophthalmology, The First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Donglei Zhang
- Department of Ophthalmology, The First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Lu Yang
- Department of Retinology, Shanxi Eye Hospital, Taiyuan, 030001, China
| | - Rupak Roy
- SHRM Biotechnologies Pvt. Ltd. Kolkata, Kolkata, West Bengal, India
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3
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Sfera A, Osorio C, Rahman L, Zapata-Martín del Campo CM, Maldonado JC, Jafri N, Cummings MA, Maurer S, Kozlakidis Z. PTSD as an Endothelial Disease: Insights From COVID-19. Front Cell Neurosci 2021; 15:770387. [PMID: 34776871 PMCID: PMC8586713 DOI: 10.3389/fncel.2021.770387] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/11/2021] [Indexed: 12/15/2022] Open
Abstract
SARS-CoV-2 virus, the etiologic agent of COVID-19, has affected almost every aspect of human life, precipitating stress-related pathology in vulnerable individuals. As the prevalence rate of posttraumatic stress disorder in pandemic survivors exceeds that of the general and special populations, the virus may predispose to this disorder by directly interfering with the stress-processing pathways. The SARS-CoV-2 interactome has identified several antigens that may disrupt the blood-brain-barrier by inducing premature senescence in many cell types, including the cerebral endothelial cells. This enables the stress molecules, including angiotensin II, endothelin-1 and plasminogen activator inhibitor 1, to aberrantly activate the amygdala, hippocampus, and medial prefrontal cortex, increasing the vulnerability to stress related disorders. This is supported by observing the beneficial effects of angiotensin receptor blockers and angiotensin converting enzyme inhibitors in both posttraumatic stress disorder and SARS-CoV-2 critical illness. In this narrative review, we take a closer look at the virus-host dialog and its impact on the renin-angiotensin system, mitochondrial fitness, and brain-derived neurotrophic factor. We discuss the role of furin cleaving site, the fibrinolytic system, and Sigma-1 receptor in the pathogenesis of psychological trauma. In other words, learning from the virus, clarify the molecular underpinnings of stress related disorders, and design better therapies for these conditions. In this context, we emphasize new potential treatments, including furin and bromodomains inhibitors.
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Affiliation(s)
- Adonis Sfera
- Department of Psychiatry, Loma Linda University, Loma Linda, CA, United States
- Patton State Hospital, San Bernardino, CA, United States
| | - Carolina Osorio
- Department of Psychiatry, Loma Linda University, Loma Linda, CA, United States
| | - Leah Rahman
- Patton State Hospital, San Bernardino, CA, United States
| | | | - Jose Campo Maldonado
- Department of Medicine, The University of Texas Rio Grande Valley, Edinburg, TX, United States
| | - Nyla Jafri
- Patton State Hospital, San Bernardino, CA, United States
| | | | - Steve Maurer
- Patton State Hospital, San Bernardino, CA, United States
| | - Zisis Kozlakidis
- International Agency For Research On Cancer (IARC), Lyon, France
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Synergistic Effect of the Long-Term Overexpression of Bcl-2 and BDNF Lentiviral in Cell Protecting against Death and Generating TH Positive and CHAT Positive Cells from MSC. Int J Mol Sci 2021; 22:ijms22137086. [PMID: 34209365 PMCID: PMC8268627 DOI: 10.3390/ijms22137086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/15/2021] [Accepted: 06/28/2021] [Indexed: 01/01/2023] Open
Abstract
Mesenchymal stem cells (MSC) are potentially a good material for transplantation in many diseases, including neurodegenerative diseases. The main problem with using them is the low percentage of surviving cells after the transplant procedure and the naturally poor ability of MSC to spontaneously differentiate into certain types of cells, which results in their poor integration with the host cells. The aim and the novelty of this work consists in the synergistic overexpression of two genes, BCL2 and BDNF, using lentiviral vectors. According to our hypothesis, the overexpression of the BCL2 gene is aimed at increasing the resistance of cells to stressors and toxic factors. In turn, the overexpression of the BDNF gene is suspected to direct the MSC into the neural differentiation pathway. As a result, it was shown that the overexpression of both genes and the overproduction of proteins is permanent and persists for at least 60 days. The synergistically transduced MSC were significantly more resistant to the action of staurosporine; 12 days after transduction, the synergistically transduced MSC had a six-times greater survival rate. The overexpression of the Bcl-2 and BDNF proteins was sufficient to stimulate a significant overexpression of the CHAT gene, and under specific conditions, the TH, TPH1, and SYP genes were also overexpressed. Modified MSC are able to differentiate into cholinergic and dopaminergic neurons, and the release of acetylcholine and dopamine may indicate their functionality.
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Brain-Derived Neurotrophic Factor during Oral Glucose Tolerance Test Predicts Cardiovascular Outcomes. Int J Mol Sci 2020; 21:ijms21145008. [PMID: 32679912 PMCID: PMC7404303 DOI: 10.3390/ijms21145008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 12/24/2022] Open
Abstract
We investigated if brain-derived neurotrophic factor (BDNF) accumulation after glucose intake could predict cardiovascular outcomes. We enrolled patients admitted for angiography due to angina. After their conditions stabilized, serum BDNF levels were detected at 0, 30, and 120 min during oral glucose tolerance test (OGTT). Area under the curve (AUC) of BDNF was calculated. The first occurrence of nonfatal myocardial infarction, nonfatal stroke, and all-cause mortality served as the primary composite endpoint. Of 480 enrolled patients, 428 completed the follow-up, and 36 primary endpoint events occurred during a median follow-up of 4.4 years. The area under the receiver operating characteristic curve significantly increased from 0.61 (95% confidence interval (CI): 0.52–0.73) for the Framingham risk score (FRS) alone model to 0.72 (95%CI: 0.63–0.81) for the AUC of BDNF plus FRS model (p = 0.016) for predicting the primary endpoint, but not to 0.65 (95%CI: 0.55–0.75) for the fasting BDNF plus FRS model (p = 0.160). Grouped by median AUC of BDNF of 38.0 (ng/mL) × h, the low BDNF group had a significantly higher risk of the endpoint than the high BDNF group (hazard ratio = 3.410, 95%CI: 1.520–7.653, p = 0.003). In conclusion, AUC of BDNF during OGTT could be superior to fasting BDNF for predicting a low cardiovascular risk.
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Cefis M, Quirié A, Pernet N, Marie C, Garnier P, Prigent-Tessier A. Brain-derived neurotrophic factor is a full endothelium-derived factor in rats. Vascul Pharmacol 2020; 128-129:106674. [PMID: 32179157 DOI: 10.1016/j.vph.2020.106674] [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: 10/12/2019] [Revised: 02/07/2020] [Accepted: 03/12/2020] [Indexed: 02/06/2023]
Abstract
Most of what is known on vascular brain-derived neurotrophic factor (BDNF) derived from experiments on cultured endothelial cells. Therefore, the present study compared BDNF levels/localization in artery (aorta) vs vein (vena cava) from a same territory in rats either sedentary (SED) or exposed to treadmill exercise (EX) as a mean to stimulate endogenous endothelial nitric oxide (NO) production. In SED rats, for both artery and vein, BDNF was strongly expressed by endothelial cells, while only a faint and scattered expression was observed throughout the media. Endothelial and muscular BDNF staining as vascular BDNF protein levels were however higher in artery than in vein, while BDNF mRNA levels did not differ between vessels. Irrespective of the vessels, EX resulted in an increase (+50%) in BDNF protein levels with no change in BDNF mRNA levels, a selective endothelial BDNF overexpression (x4) and an increase in vascular levels of tropomyosin related kinase B receptors (TrkB) phosphorylated at tyrosine 816 (p-TrkBTyr816). Endothelial expressions of BDNF and p-TrkBTyr816 were positively associated when SED and EX rats were simultaneously examined. The results incite to consider endothelial BDNF as a full and NO-dependent endothelium-derived factor that exerts autocrine effects.
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Affiliation(s)
- Marina Cefis
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France
| | - Aurore Quirié
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France
| | - Nicolas Pernet
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France
| | - Christine Marie
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France.
| | - Philippe Garnier
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France; Département Génie Biologique, IUT, F-21000 Dijon, France
| | - Anne Prigent-Tessier
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, F-21000 Dijon, France
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Zhang X, Shi E, Yang L, Fu W, Hu F, Zhou X. Gentiopicroside attenuates diabetic retinopathy by inhibiting inflammation, oxidative stress, and NF-κB activation in rat model. EUR J INFLAMM 2019. [DOI: 10.1177/2058739219847837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Diabetic retinopathy, an inflammatory condition, is one of the devastating complication associated with diabetes that can lead to irreversible blindness. Gentiopicroside (GP), a secoiridoid glycoside, exhibits anti-inflammatory and antioxidant activity. The investigation was carried out to explore whether GP could attenuate diabetic retinopathy in diabetic rats. Diabetes was induced by injecting streptozotocin (STZ) (65 mg/kg) intraperitoneally in 8-weeks-old male rats (200–240 g). The treatment group received GP (20, 40, 80 mg/kg) orally for a duration of 10 weeks in diabetic rats (n = 10), and the diabetic group animals received phosphate buffer solution (n = 20). Effect of GP on cell viability study was performed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Oxidative stress markers, inflammatory mediators, and angiogenic factors were quantified in the retinal tissues of diabetic animals. All data were analyzed by one-way analysis of variance (ANOVA) at P < 0.05. Cytoprotective effect of GP was observed in MTT assay. GP effectively downregulated inflammatory cytokine, nuclear factor κB (NF-κB), tumor necrosis factor-α (TNF-α), interleukin 1 beta (IL-1β), and intercellular adhesion molecules-1 (ICAM-1), and upregulated antioxidant markers glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) in the retina of diabetic rats. GP equilibrated the disturbed angiogenic factors in the diabetic retinal tissues. Results clearly indicated defensive role of GP in the treatment of diabetic retinopathy by inhibition of NF-κB and oxidative stress.
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Affiliation(s)
- Xian Zhang
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
| | - En Shi
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
| | - Lan Yang
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
| | - Weina Fu
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
| | - Feng Hu
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
| | - Xisong Zhou
- Department of Ophthalmology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, China
- Department of Ophthalmology, Taipei Medical University Ningbo Medical Center, Ningbo, China
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8
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Beazley-Long N. Do neuronal microvascular activation and resultant dysfunction in rheumatoid arthritis contribute to chronic pain? Neural Regen Res 2018; 14:79-81. [PMID: 30531079 PMCID: PMC6262999 DOI: 10.4103/1673-5374.243710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Nicholas Beazley-Long
- Arthritis Research UK Pain Centre & School of Life Sciences, Medical School, University of Nottingham, Nottingham, UK
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9
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Han X, Wang B, Sun Y, Huang J, Wang X, Ma W, Zhu Y, Xu R, Jin H, Liu N. Metformin Modulates High Glucose-Incubated Human Umbilical Vein Endothelial Cells Proliferation and Apoptosis Through AMPK/CREB/BDNF Pathway. Front Pharmacol 2018; 9:1266. [PMID: 30459620 PMCID: PMC6232387 DOI: 10.3389/fphar.2018.01266] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/17/2018] [Indexed: 01/08/2023] Open
Abstract
Cardiovascular disease (CVD) is a leading cause of mortality and morbidity among patients with diabetes. Endothelial dysfunction is an early physiological event in CVD. Metformin, a common oral antihyperglycemic agent, has been demonstrated to directly affect endothelial cell function. Brain-derived neurotrophic factor (BDNF), originally discovered in the brain as a neurotrophin, has also been reported to play a protective role in the cardiovascular system. In our study, we demonstrated that high glucose (HG) reduced cell proliferation and induced cell apoptosis via changes in BDNF expression and that metformin reversed the effects of HG injury by upregulating BDNF expression. Furthermore, we found that cyclic AMP response element binding (CREB) phosphorylation was reduced in HG-treated human umbilical vein endothelial cells (HUVECs), and this effect was reversed by the metformin treatment. However, the metformin effect on BDNF levels in HG-incubated HUVECs was blocked by a CREB inhibitor, which indicated that BDNF expression is regulated by metformin through CREB activation. In addition, we found that adenosine monophosphate-activated protein kinase (AMPK) activation is involved in CREB/BDNF regulation in HG-incubated HUVECs treated with metformin and that an AMPK inhibitor impaired the protective effects of metformin on HG-treated HUVECs. In conclusion, this study demonstrated that metformin affects cell proliferation and apoptosis via the AMPK/CREB/BDNF pathway in HG-incubated HUVECs.
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Affiliation(s)
- Xiqiong Han
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Bilei Wang
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Yuning Sun
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Jia Huang
- Department of Cardiology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Xin Wang
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Wenqi Ma
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Yi Zhu
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Rongfeng Xu
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Hong Jin
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Naifeng Liu
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
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Abiko M, Mitsuhara T, Okazaki T, Imura T, Nakagawa K, Otsuka T, Oshita J, Takeda M, Kawahara Y, Yuge L, Kurisu K. Rat Cranial Bone-Derived Mesenchymal Stem Cell Transplantation Promotes Functional Recovery in Ischemic Stroke Model Rats. Stem Cells Dev 2018; 27:1053-1061. [PMID: 29786481 DOI: 10.1089/scd.2018.0022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The functional disorders caused by central nervous system (CNS) diseases, such as ischemic stroke, are clinically incurable and current treatments have limited effects. Previous studies suggested that cell-based therapy using mesenchymal stem cells (MSCs) exerts therapeutic effects for ischemic stroke. In addition, the characteristics of MSCs may depend on their sources. Among the derived tissues of MSCs, we have focused on cranial bones originating from the neural crest. We previously demonstrated that the neurogenic potential of human cranial bone-derived MSCs (cMSCs) was higher than that of human iliac bone-derived MSCs. Therefore, we presumed that cMSCs have a higher therapeutic potential for CNS diseases. However, the therapeutic effects of cMSCs have not yet been elucidated in detail. In the present study, we aimed to demonstrate the therapeutic effects of transplantation with rat cranial bone-derived MSCs (rcMSCs) in ischemic stroke model rats. The mRNA expression of brain-derived neurotrophic factor and nerve growth factor was significantly stronger in rcMSCs than in rat bone marrow-derived MSCs (rbMSCs). Ischemic stroke model rats in the rcMSC transplantation group showed better functional recovery than those in the no transplantation and rbMSC transplantation groups. Furthermore, in the in vitro study, the conditioned medium of rcMSCs significantly suppressed the death of neuroblastoma × glioma hybrid cells (NG108-15) exposed to oxidative and inflammatory stresses. These results suggest that cMSCs have potential as a candidate cell-based therapy for CNS diseases.
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Affiliation(s)
- Masaru Abiko
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Takafumi Mitsuhara
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Takahito Okazaki
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Takeshi Imura
- 2 Division of Bio-Environmental Adaptation Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Kei Nakagawa
- 2 Division of Bio-Environmental Adaptation Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Takashi Otsuka
- 2 Division of Bio-Environmental Adaptation Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Jumpei Oshita
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Masaaki Takeda
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
| | - Yumi Kawahara
- 3 Space Bio-Laboratories Co., Ltd. , Hiroshima, Japan
| | - Louis Yuge
- 2 Division of Bio-Environmental Adaptation Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan .,3 Space Bio-Laboratories Co., Ltd. , Hiroshima, Japan
| | - Kaoru Kurisu
- 1 Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University , Hiroshima, Japan
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Pro-BDNF Contributes to Hypoxia/Reoxygenation Injury in Myocardial Microvascular Endothelial Cells: Roles of Receptors p75 NTR and Sortilin and Activation of JNK and Caspase 3. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:3091424. [PMID: 30046375 PMCID: PMC6038493 DOI: 10.1155/2018/3091424] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 04/30/2018] [Indexed: 01/02/2023]
Abstract
The aim of this study was to identify the role of the precursor of the brain-derived neurotrophic factor (pro-BDNF) in myocardial hypoxia/reoxygenation injury (H/R) and to address the underlying mechanisms. For this purpose, myocardial microvascular endothelial cells (MMECs) exposed to a high concentration of glucose (30 mM) for 48 h were subjected to 4 h of hypoxia followed by 2 h of reoxygenation. Terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling (TUNEL) staining and flow-cytometric analysis were performed to detect apoptosis. Cell scratch and capillary-like-structure formation assays were employed to evaluate cell function. The levels of apoptosis-related proteins were evaluated by Western blotting and immunofluorescence assays. Our results showed that H/R resulted in MMEC injury, as indicated by significant increases in TUNEL-positive cell numbers and a reduction in MMEC migration and in capillary-like-structure formation coupled with increased pro-BDNF protein expression. In addition, overexpression of pro-BDNF in MMECs via a viral vector led to increased pro-BDNF expression, and this upregulation induced apoptosis. Mechanistic experiments revealed that H/R did not influence BDNF, JNK, and caspase 3 expression, but upregulated pro-BDNF, p75NTR, sortilin, phospho-JNK, and cleaved caspase 3 protein levels. In contrast, neutralization of endogenous pro-BDNF with an antibody significantly attenuated H/R-induced upregulation of pro-BDNF, p75NTR, sortilin, p-JNK, and cleaved caspase 3 protein levels, indicating that p75NTR-sortilin signaling and activation of JNK and caspase 3 may be involved in these effects. In conclusion, H/R-induced injury may be mediated by pro-BDNF, at least in part through the regulation of p75NTR-sortilin signaling and activation of JNK and caspase 3.
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ZHAO DY, ZHANG WX, QI QQ, LONG X, LI X, YU YB, ZUO XL. Brain-Derived Neurotrophic Factor Modulates Intestinal Barrier by Inhibiting Intestinal Epithelial Cells Apoptosis in Mice. Physiol Res 2018. [PMID: 29527912 DOI: 10.33549/physiolres.933641] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We aimed to investigate the effects of brain-derived neurotrophic factor (BDNF) on apoptosis of intestinal epithelial cells (IECs) and alterations of intestinal barrier integrity using BDNF knock-out mice model. Colonic tissues from BDNF+/+ mice and BDNF+/- mice were prepared for this study. The integrity of colonic mucosa was evaluated by measuring trans-mucosa electrical resistance and tissue conductance in Ussing chamber. The colonic epithelial structure was analyzed by transmission electron microscopy. Apoptosis involvement was determined with TUNEL staining, active caspase-3 immunostaining and Western blotting for the protein expression of active caspase-3, Bax and Bcl-2. The expression levels and distribution of tight junction proteins were evaluated by immunohistochemistry or Western blots. Compared with BDNF+/+ mice, BDNF+/- mice displayed impaired integrity and ultrastructure alterations in their colonic mucosa, which was characterized by diminished microvilli, mitochondrial swelling and epithelial cells apoptosis. Altered intestinal barrier function was linked to excessive apoptosis of IECs demonstrated by the higher proportion of TUNEL-positive apoptotic cells and enhanced caspase activities in BDNF+/- mice. Increased expression of Bax and claudin-2 proteins and reduced Bcl-2 and tight junction proteins (occludin, ZO-1 and claudin-1) expression were also detected in the colonic mucosa of BDNF+/- mice. BDNF may play a role in the maintenance of intestinal barrier integrity via its
anti-apoptotic properties.
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Affiliation(s)
| | | | | | | | | | - Y.-B. YU
- Department of Gastroenterology, Qilu Hospital, Shandong University, Jinan, China
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13
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Lee IT, Sheu WHH, Lee WJ, Chen DY. Serum brain-derived neurotrophic factor predicting reduction in pulse pressure after a one-hour rest in nurses working night shifts. Sci Rep 2018; 8:5485. [PMID: 29615787 PMCID: PMC5882896 DOI: 10.1038/s41598-018-23791-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 03/21/2018] [Indexed: 12/16/2022] Open
Abstract
Night shift work is associated with cardiovascular disease and central nervous system disorders in female nurses. Brain-derived neurotrophic factor (BDNF) exerts protective effects on neural and endothelial functions. This study examined the association between serum BDNF levels and pulse pressure after rest in female nurses working night shifts. In this study, blood samples were collected for BDNF measurement after a night shift when nurses had been working night shifts for three continuous weeks. Blood pressure was assessed before and after a one-hour morning rest within a week of resuming the night shift after one month without any night shift work. The pulse pressure of nurses (n = 48, age 29 ± 5 years) was significantly reduced (from 43 ± 7 to 41 ± 6 mmHg, P = 0.003) after rest, and serum BDNF were significantly and inversely correlated with pulse pressure changes (r = −0.435, P = 0.002). Higher serum BDNF was an independent factor for greater reduction in pulse pressure (95%CI = −0.609 ‒ −0.174, P = 0.001). Using a receiver operating characteristic curve analysis, serum BDNF >20.6 ng/mL predicted a pulse pressure reduction after a one-hour rest (sensitivity 66.7%, specificity 77.8%). In conclusion, higher serum BDNF predicted greater recovery of pulse pressure after a one-hour rest in female nurses after night shift work.
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Affiliation(s)
- I-Te Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan. .,School of Medicine, National Yang-Ming University, Taipei, Taiwan. .,School of Medicine, Chung Shan Medical University, Taichung, Taiwan.
| | - Wayne Huey-Herng Sheu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Wen-Jane Lee
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Der-Yuan Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.,PhD Program in Translational Medicine and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
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Wang X, Ding G, Lai W, Liu S, Shuai J. MicroRNA-383 upregulation protects against propofol-induced hippocampal neuron apoptosis and cognitive impairment. Exp Ther Med 2018; 15:3181-3188. [PMID: 29545833 PMCID: PMC5840935 DOI: 10.3892/etm.2018.5838] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 05/11/2017] [Indexed: 11/20/2022] Open
Abstract
Anesthesia-induced cognitive impairment is a recognized clinical phenomenon. The present study aimed to investigate the effect of microRNA-383 (miR-383) expression on propofol-induced learning and memory impairment. In total, 48 male Sprague-Dawley rats (weight, 250±10 g) were randomly divided into four groups (n=12 each): Control group, and three groups of rats that were anesthetized with propofol for 6 h and untreated (propofol model group), treated with a constructed lentivirus vector expressing miR-383 mimics (mimic + propofol group), or treated with miR-383 scramble (scramble + propofol group). The learning memory ability, hippocampal neuron apoptosis and expression of apoptosis-associated factors were detected using reverse transcription-quantitiative polymerase chain reaction and western blot analysis. Propofol treatment significantly reduced the relative mRNA and protein expression of miR-383, induced neuron apoptosis, upregulated the Bax/Bcl-2 ratio, downregulated the relative mRNA and protein expression levels of postsynaptic density protein 95 and cAMP-response element binding protein, and inactivated the phosphoinositide 3-kinase/protein kinase B signaling pathway. By contrast, miR-383 mimics significantly altered the propofol-induced dysregulation of the aforementioned factors. In conclusion, miR-383 mimic was able to repair propofol-induced cognitive impairment via protecting against hippocampal neuron apoptosis and dysregulation of related factors. The present study suggested that miR-383 may be used as a potential therapeutic target for the clinical treatment of cognitive impairment induced by propofol anesthesia.
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Affiliation(s)
- Xinlei Wang
- Department of Anesthesia, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Guoyou Ding
- Department of Anesthesia, Chinese People's Liberation Army No. 94 Hospital, Nanchang, Jiangxi 330002, P.R. China
| | - Wei Lai
- Department of Anesthesia, Chinese People's Liberation Army No. 94 Hospital, Nanchang, Jiangxi 330002, P.R. China
| | - Shiwen Liu
- Department of Anesthesia, Ganzhou People's Hospital, Ganzhou, Jiangxi 310000, P.R. China
| | - Jun Shuai
- Department of Anesthesia, Chinese People's Liberation Army No. 94 Hospital, Nanchang, Jiangxi 330002, P.R. China
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15
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The association between brain-derived neurotrophic factor and central pulse pressure after an oral glucose tolerance test. Clin Chim Acta 2017; 476:1-8. [PMID: 29080692 DOI: 10.1016/j.cca.2017.10.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 10/17/2017] [Accepted: 10/24/2017] [Indexed: 11/20/2022]
Abstract
BACKGROUND Arterial stiffening blunts postprandial vasodilatation. We hypothesized that brain-derived neurotrophic factor (BDNF) may modulate postprandial central pulse pressure, a surrogate marker for arterial stiffening. METHODS A total of 82 non-diabetic subjects received a 75-g oral glucose tolerance test (OGTT) after overnight fasting. Serum BDNF concentrations were determined at 0, 30, and 120min to calculate the area under the curve (AUC). Brachial and central blood pressures were measured using a noninvasive central blood pressure monitor before blood withdrawals at 0 and 120min. RESULTS With the median AUC of BDNF of 45(ng/ml)∗h as the cutoff value, the central pulse pressure after glucose intake was significantly higher in the subjects with a low BDNF than in those with a high BDNF (63±16 vs. 53±11mmHg, P=0.003), while the brachial pulse pressure was not significantly different between the 2 groups (P=0.099). In a multivariate linear regression model, a lower AUC of BDNF was an independent predictor of a higher central pulse pressure after oral glucose intake (linear regression coefficient-0.202, 95% confidence interval-0.340 to -0.065, P=0.004). CONCLUSION After oral glucose challenge, a lower serum BDNF response is significantly associated with a higher central pulse pressure.
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16
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Ling YZ, Li XH, Yu L, Zhang Y, Liang QS, Yang XD, Wang HT. Protective effects of parecoxib on rat primary astrocytes from oxidative stress induced by hydrogen peroxide. J Zhejiang Univ Sci B 2017; 17:692-702. [PMID: 27604861 DOI: 10.1631/jzus.b1600017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To investigate the protective effects of parecoxib from oxidative stress induced by hydrogen peroxide (H2O2) in rat astrocytes in vitro. METHODS All experiments included 4 groups: (1) negative control (NC) group, without any treatment; (2) H2O2 treatment group, 100 μmol/L H2O2 treatment for 24 h; (3) and (4) parecoxib pretreatment groups, 80 and 160 μmol/L parecoxib treatment for 24 h, respectively, and then treated with 100 μmol/L H2O2. Several indices were investigated, and the expressions of Bax, Bcl-2, and brain-derived neurotrophic factor (BDNF) were quantified. RESULTS Compared to the NC group, exposure to H2O2 resulted in significant morphological changes, which could be reversed by pretreatment of parecoxib. In addition, H2O2 treatment led to loss of viability (P=0.026) and increased intracellular reactive oxygen species (ROS) levels (P<0.001), and induced apoptosis (P<0.01) in the primary astrocytes relative to the NC group. However, in the parecoxib pretreatment groups, all the above changes reversed significantly (P<0.05) as compared to the H2O2 treatment group, and were nearly unchanged when compared to the NC group. Mechanical investigation showed that dysregulated Bax, Bcl-2, and BDNF could be implicated in these changes. CONCLUSIONS Our results indicated that parecoxib provided a protective effect from oxidative stress induced by exposure to H2O2.
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Affiliation(s)
- Yun-Zhi Ling
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Xiao-Hong Li
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Li Yu
- Department of Laboratory Medicine, Bengbu Medical College, Bengbu 233030, China
| | - Ye Zhang
- Department of Anesthesiology, Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Qi-Sheng Liang
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Xiao-di Yang
- Department of Parasitology, Bengbu Medical College, Bengbu 233030, China
| | - Hong-Tao Wang
- Department of Immunology, Bengbu Medical College, Bengbu 233030, China
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17
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Takeda K, Tokunaga N, Aida Y, Kajiya M, Ouhara K, Sasaki S, Mizuno N, Fujita T, Kurihara H. Brain-Derived Neurotrophic Factor Inhibits Peptidoglycan-Induced Inflammatory Cytokine Expression in Human Dental Pulp Cells. Inflammation 2017; 40:240-247. [PMID: 27853893 DOI: 10.1007/s10753-016-0474-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aim of this study was to examine the anti-inflammatory effect of brain-derived neurotrophic factor (BDNF) on human dental pulp cells (HDPCs) and identify the intracellular signaling pathway involved. We investigated the effect of BDNF (50 ng/ml) on interleukin (IL)-6 and IL-8 expression in peptidoglycan (PGN)-treated HDPCs. An inhibition assay was performed with MAPK or NF-κB inhibitors to determine the possible signaling pathway. IL-6 and IL-8 mRNA, IL-6 and IL-8 protein, and phosphorylated p38 kinase activity were determined using real-time PCR, ELISA, and Western blot analysis, respectively. BDNF significantly attenuated PGN-induced IL-6 and IL-8 mRNA and protein levels in HDPCs. A p38 inhibitor also inhibited IL-6 and IL-8 mRNA transcription. PGN stimulated phosphorylated p38 kinase activity in HDPCs, which was inhibited by BDNF. Suppression of phosphorylated p38 kinase activity by BDNF in HDPCs inhibited increased IL-6 and IL-8 expression induced by PGN. Our findings suggest that BDNF regulates intracellular signaling molecule activities to exert its anti-inflammatory effect.
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Affiliation(s)
- Katsuhiro Takeda
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Naoko Tokunaga
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yusuke Aida
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mikihito Kajiya
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinya Sasaki
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noriyoshi Mizuno
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tsuyoshi Fujita
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hidemi Kurihara
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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18
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Wang Y, Meng X, Yan H. Niaspan inhibits diabetic retinopathy‑induced vascular inflammation by downregulating the tumor necrosis factor‑α pathway. Mol Med Rep 2017; 15:1263-1271. [PMID: 28138697 PMCID: PMC5367335 DOI: 10.3892/mmr.2017.6146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 11/22/2016] [Indexed: 12/22/2022] Open
Abstract
Diabetic retinopathy (DR) is a serious microvascular complication of diabetes and a major cause of blindness in the developing world. Early DR is characterized by vascular neuroinflammation, cell apoptosis and breakdown of the blood‑retinal barrier (BRB). However, optimal treatment options and associated mechanisms remain unclear. Niaspan, which is widely used in the prevention and treatment of hyperlipidemia‑associated diseases, has been reported to inhibit inflammation. However, the effects of Niaspan and the mechanisms underlying the anti‑inflammatory effects of Niaspan on DR have yet to be reported. The present study aimed to investigate the anti‑inflammatory effects and mechanisms of Niaspan in a rat model of DR. Rats with DR exhibited a significant increase in BRB breakdown, retinal apoptosis, and tumor necrosis factor‑α (TNF‑α) and nuclear factor‑κB (NF‑κB) expression. In addition, the expression levels of inducible nitric oxide synthase (iNOS) and intercellular cell adhesion molecule‑1 (ICAM‑1) were increased in the retinas of DR rats compared with in the normal control group. In conclusion, treatment with Niaspan significantly improved clinical and histopathological outcomes; decreased the expression levels of TNF‑α, NF‑κB, iNOS and ICAM‑1; and decreased apoptosis and BRB breakdown, as compared with in the retinas of DR rats. The present study is the first, to the best of our knowledge, to demonstrate that Niaspan treatment ameliorates DR by inhibiting inflammation, and also suggests that the TNF‑α pathway may contribute to the beneficial effects of Niaspan treatment.
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Affiliation(s)
- Yang Wang
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Xiangda Meng
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Hua Yan
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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19
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Li M, Wang Y, Wang W, Zou C, Wang X, Chen Q. Recombinant human brain-derived neurotrophic factor prevents neuronal apoptosis in a novel in vitro model of subarachnoid hemorrhage. Neuropsychiatr Dis Treat 2017; 13:1013-1021. [PMID: 28435271 PMCID: PMC5388253 DOI: 10.2147/ndt.s128442] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a hemorrhagic stroke with high mortality and morbidity. An animal model for SAH was established by directly injecting a hemolysate into the subarachnoid space of rats or mice. However, the in vitro applications of the hemolysate SAH model have not been reported, and the mechanisms remain unclear. In this study, we established an in vitro SAH model by treating cortical pyramidal neurons with hemolysate. Using this model, we assessed the effects of recombinant human brain-derived neurotrophic factor (rhBDNF) on hemolysate-induced cell death and related mechanisms. Cortical neurons were treated with 10 ng/mL or 100 ng/mL rhBDNF prior to application of hemolysate. Hemolysate treatment markedly increased cell loss, triggered apoptosis, and promoted the expression of caspase-8, caspase-9, and cleaved caspase-3. rhBDNF significantly inhibited hemolysate-induced cell loss, neuronal apoptosis, and expression of caspase-8, caspase-9, and cleaved caspase-3. Our data revealed a previously unrecognized protective activity of rhBDNF against hemolysate-induced cell death, potentially via regulation of caspase-9-, caspase-8-, and cleaved caspase-3-related apoptosis. This study implicates that hemolysate-induced cortical neuron death represents an important in vitro model of SAH.
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Affiliation(s)
- Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Yuefei Wang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Wei Wang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Changlin Zou
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Xin Wang
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
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Najafi A, Asadi E, Moawad AR, Mikaeili S, Amidi F, Adutwum E, Safa M, Sobhani AG. Supplementation of freezing and thawing media with brain-derived neurotrophic factor protects human sperm from freeze-thaw-induced damage. Fertil Steril 2016; 106:1658-1665.e4. [DOI: 10.1016/j.fertnstert.2016.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 08/05/2016] [Accepted: 09/02/2016] [Indexed: 01/19/2023]
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Brain-Derived Neurotrophic Factor Inhibits Intercellular Adhesion Molecule-1 Expression in Interleukin-1β-Treated Endothelial Cells. Cell Biochem Biophys 2016; 74:399-406. [DOI: 10.1007/s12013-016-0749-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/09/2016] [Indexed: 12/20/2022]
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22
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Najafi A, Amidi F, Sedighi Gilani MA, Moawad AR, Asadi E, Khanlarkhni N, Fallah P, Rezaiian Z, Sobhani A. Effect of brain-derived neurotrophic factor on sperm function, oxidative stress and membrane integrity in human. Andrologia 2016; 49. [DOI: 10.1111/and.12601] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2016] [Indexed: 01/08/2023] Open
Affiliation(s)
- A. Najafi
- Department of Anatomy; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - F. Amidi
- Department of Anatomy; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - M. A. Sedighi Gilani
- Department of Urology; Shariati Hospital; Tehran University of Medical Sciences; Tehran Iran
| | - A. R. Moawad
- Departments of Obstetrics and Gynecology; Surgery; McGill University; Montreal QC Canada
- Department of Theriogenology; Faculty of Veterinary Medicine; Cairo University; Giza Egypt
| | - E. Asadi
- Department of Anatomy; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - N. Khanlarkhni
- Department of Anatomy; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - P. Fallah
- Infertility Center; Shariati Hospital; Tehran University of Medical Sciences; Tehran Iran
| | - Z. Rezaiian
- Infertility Center; Shariati Hospital; Tehran University of Medical Sciences; Tehran Iran
| | - A. Sobhani
- Department of Anatomy; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
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23
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Computational Design of TrkB Peptide Inhibitors and Their Biological Effects on Ovarian Cancer Cell Lines. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-015-9510-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Tang Y, Zhang YC, Chen Y, Xiang Y, Shen CX, Li YG. The role of miR-19b in the inhibition of endothelial cell apoptosis and its relationship with coronary artery disease. Sci Rep 2015; 5:15132. [PMID: 26459935 PMCID: PMC4602285 DOI: 10.1038/srep15132] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 09/17/2015] [Indexed: 11/09/2022] Open
Abstract
The biological effects of microRNAs (miRNAs) and TNF-α in atherosclerosis have been widely studied. The circulating miR-17-92 cluster has been recently shown to be significantly downregulated in patients with injured vascular endothelium. However, it remains unclear whether the miR-17-92 cluster plays a significant role in vascular endothelial repair. The aim of this study was to investigate the relationship between the miR-17-92 cluster and TNF-α-induced endothelial cell apoptosis. We determined that the down-regulation of miR-19b level among patients with coronary artery disease was consistent with miRNA expression changes in endothelial cells following 24 h of TNF-α treatment. In vitro, the overexpression of miR-19b significantly alleviated the endothelial cells apoptosis, whereas the inhibition of miR-19b significantly enhanced apoptosis. The increased levels of Afap1 and caspase7 observed in our apoptosis model could be reduced by miR-19b, and this effect could be due to miR-19b binding 3'-UTRs of Afap1 and caspase7 mRNA. Therefore our results indicate that miR-19b plays a key role in the attenuation of TNF-α-induced endothelial cell apoptosis and that this function is closely linked to the Apaf1/caspase-dependent pathway.
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Affiliation(s)
- Yong Tang
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ya-Chen Zhang
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yu Chen
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yin Xiang
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Cheng-Xing Shen
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yi-Gang Li
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Zhang Y, Zhang Z, Yan H. Simvastatin inhibits ischemia/reperfusion injury-induced apoptosis of retinal cells via downregulation of the tumor necrosis factor-α/nuclear factor-κB pathway. Int J Mol Med 2015; 36:399-405. [PMID: 26063345 PMCID: PMC4501639 DOI: 10.3892/ijmm.2015.2244] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 05/21/2015] [Indexed: 12/01/2022] Open
Abstract
Simvastatin, which is widely used in the prevention and treatment of hyperlipidemia-associated diseases, has been reported to enhance the survival of retinal ganglion cells (RGCs) in a model of retinal ischemia/reperfusion (IR) injury. However, the underlying mechanism of the anti-apoptotic effects of simvastatin on the retina have yet to be elucidated. In the present study, rats were treated with simvastatin or saline for 7 days prior to IR via ligation of the right cephalic artery. The results showed that simvastatin prevented the apoptosis of RGCs and cells in the inner nuclear layer. Furthermore, simvastatin regulated the expression of apoptosis-associated proteins. The expression levels of the anti-apoptotic protein B-cell lymphoma-2 were upregulated 4 and 24 h after IR in the simvastatin/IR group compared to those in the saline/IR group. Conversely, the levels of pro-apoptotic protein Bax were downregulated in the simvastatin/IR group compared to those in the saline/IR group. Furthermore, the results of the present study showed for the first time, to the best of our knowledge, that simvastatin decreased IR injury-induced tumor necrosis factor-α (TNF-α) and nuclear factor-κB (NF-κB) expression in the retina. These findings strongly suggested that simvastatin inhibits apoptosis following IR-induced retinal injury by inhibition of the TNF-α/NF-κB pathway. The present study also provided a rationale for developing therapeutic methods to treat IR-induced retinal injury in the clinic.
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Affiliation(s)
- Yu Zhang
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Zhuhong Zhang
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Hua Yan
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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Simvastatin reduces burn injury-induced splenic apoptosis via downregulation of the TNF-α/NF-κB pathway. Ann Surg 2015; 261:1006-12. [PMID: 24950285 DOI: 10.1097/sla.0000000000000764] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Recent studies have suggested that epidermal burn injuries are associated with inflammation and immune dysfunction. Simvastatin has been shown to possess potent anti-inflammatory properties. Thus, we hypothesized that simvastatin protects against burn-induced apoptosis in the spleen via its anti-inflammatory activity. METHODS Wild-type, tumor necrosis factor alpha knockout (TNF-α KO) and NF-κB KO mice were subjected to full-thickness burn injury or sham treatment. The mice then were treated with or without simvastatin, and the spleen was harvested to measure the extent of apoptosis. Expression levels of TNF-α and NF-κB were also determined in spleen tissue and serum. RESULTS Burn injury induced significant splenic apoptosis and systemic cytokine production. Simvastatin protected the spleen from apoptosis, reduced cytokine production in the serum, and increased the survival rate. Simvastatin decreased burn-induced TNF-α and NF-κB expression in the spleen and serum. TNF-α and NF-κB KO mice demonstrated lower levels of apoptosis in spleen in response to burn injury. Simvastatin did not further decrease burn-caused apoptosis and mortality in either strain of KO mice. CONCLUSIONS Simvastatin reduces burn-induced splenic apoptosis via downregulation of the TNF-α/NF-κB pathway.
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