1
|
Li Y, Tu H, Zhang S, Ding Z, Wu G, Piao J, Lv D, Hu L, Li F, Wang Q. P2Y6 Receptor Activation Aggravates NLRP3-dependent Microglial Pyroptosis via Downregulation of the PI3K/AKT Pathway in a Mouse Model of Intracerebral Hemorrhage. Mol Neurobiol 2024; 61:4259-4277. [PMID: 38079109 DOI: 10.1007/s12035-023-03834-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/22/2023] [Indexed: 07/11/2024]
Abstract
Pro-inflammatory signals generated after intracerebral hemorrhage (ICH) trigger a form of regulated cell death known as pyroptosis in microglia. White matter injury (WMI) refers to the condition where the white matter area of the brain suffers from mechanical, ischemic, metabolic, or inflammatory damage. Although the p2Y purinoceptor 6 (P2Y6R) plays a significant role in the control of inflammatory reactions in central nervous system diseases, its roles in the development of microglial pyroptosis and WMI following ICH remain unclear. In this study, we sought to clarify the role of P2Y6R in microglial pyroptosis and WMI by using an experimental mouse model of ICH. Type IV collagenase was injected into male C57BL/6 mice to induce ICH. Mice were then treated with MRS2578 and LY294002 to inhibit P2Y6R and phosphatidylinositol 3-kinase (PI3K), respectively. Bio-conductivity analysis was performed to examine PI3K/AKT pathway involvement in microglial pyroptosis. Quantitative Real-Time PCR, immunofluorescence staining, and western blot were conducted to examine microglial pyroptosis and WMI following ICH. A modified Garcia test, corner turning test, and forelimb placement test were used to assess neurobehavior. Hematoxylin-eosin staining (HE) was performed to detect cells damage around hematoma. Increases in the expression of P2Y6R, NLRP3, ASC, Caspase-1, and GSDMD were observed after ICH. P2Y6R was only expressed on microglia. MRS2578, a specific inhibitor of P2Y6R, attenuated short-term neurobehavioral deficits, brain edema and hematoma volume while improving both microglial pyroptosis and WMI. These changes were accompanied by decreases in pyroptosis-related proteins and pro-inflammatory cytokines both in vivo and vitro. Bioinformatic analysis revealed an association between the PI3K/AKT pathway and P2Y6R-mediated microglial pyroptosis. The effects of MRS2578 were partially reversed by treatment with LY294002, a specific PI3K inhibitor. P2Y6R inhibition alleviates microglial pyroptosis and WMI and ameliorates neurological deficits through the PI3K/AKT pathway after ICH. Consequently, targeting P2Y6R might be a promising approach for ICH treatment.
Collapse
Affiliation(s)
- Yulong Li
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Huiru Tu
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Shengfan Zhang
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Zhiquan Ding
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Guiwei Wu
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Jifeng Piao
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Dingyi Lv
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Libin Hu
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China
| | - Feng Li
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China.
| | - Qinghua Wang
- Neurosurgery Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China.
| |
Collapse
|
2
|
Stephenson EL, Jain RW, Ghorbani S, Gorter RP, D’Mello C, Yong VW. Uncovering Novel Extracellular Matrix Transcriptome Alterations in Lesions of Multiple Sclerosis. Int J Mol Sci 2024; 25:1240. [PMID: 38279239 PMCID: PMC10816920 DOI: 10.3390/ijms25021240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/28/2024] Open
Abstract
The extracellular matrix (ECM) of the central nervous system (CNS) is an interconnected network of proteins and sugars with critical roles in both homeostasis and disease. In neurological diseases, excessive ECM deposition and remodeling impact both injury and repair. CNS lesions of multiple sclerosis (MS), a chronic inflammatory and degenerative disease, cause prominent alterations of the ECM. However, there are a lack of data investigating how the multitude of ECM members change in relation to each other and how this affects the MS disease course. Here, we evaluated ECM changes in MS lesions compared to a control brain using databases generated in-house through spatial mRNA-sequencing and through a public resource of single-nucleus RNA sequencing previously published by Absinta and colleagues. These results underline the importance of publicly available datasets to find new targets of interest, such as the ECM. Both spatial and public datasets demonstrated widespread changes in ECM molecules and their interacting proteins, including alterations to proteoglycans and glycoproteins within MS lesions. Some of the altered ECM members have been described in MS, but other highly upregulated members, including the SPARC family of proteins, have not previously been highlighted. SPARC family members are upregulated in other conditions by reactive astrocytes and may influence immune cell activation and MS disease course. The profound changes to the ECM in MS lesions deserve more scrutiny as they impact neuroinflammation, injury, and repair.
Collapse
Affiliation(s)
- Erin Laurel Stephenson
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB T2N 2T9, Canada;
| | - Rajiv William Jain
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.W.J.); (S.G.); (R.P.G.); (C.D.)
| | - Samira Ghorbani
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.W.J.); (S.G.); (R.P.G.); (C.D.)
| | - Rianne Petra Gorter
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.W.J.); (S.G.); (R.P.G.); (C.D.)
| | - Charlotte D’Mello
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.W.J.); (S.G.); (R.P.G.); (C.D.)
| | - Voon Wee Yong
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, AB T2N 4N1, Canada; (R.W.J.); (S.G.); (R.P.G.); (C.D.)
| |
Collapse
|
3
|
Huang J, Shao F, Chen B, Zheng G, Shen J, Qiu S. Serum Secreted Protein Acidic and Rich in Cysteine-Like 1 as a Biochemical Predictor for Prognosticating Clinical Outcomes After Acute Supratentorial Intracerebral Hemorrhage: A Prospective Cohort Study. Neuropsychiatr Dis Treat 2023; 19:2709-2728. [PMID: 38077240 PMCID: PMC10710246 DOI: 10.2147/ndt.s444671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 11/28/2023] [Indexed: 06/04/2024] Open
Abstract
Background Secreted protein acidic and rich in cysteine-like 1 (SPARCL1) regulates synaptic stability and is up-regulated during axonal regeneration. Here, serum SPARCL1 was determined for estimating severity and prognosticating early neurological deterioration (END) and functional outcomes of acute intracerebral hemorrhage (ICH). Methods In this prospective observational cohort study of 156 patients with supratentorial ICH, blood samples of 53 were acquired not only at admission but also ad days 1, 3, 5, 7 and 10. Another group of 53 healthy controls were recruited. The modified Rankin Scale (mRS) scores of 3-6 at poststroke six months were regarded as poor prognosis. Results As opposed to controls, serum SPARCL1 levels were markedly elevated during the early ten days after ICH, with the highest levels at days 1 and 3. Admission serum SPARCL1 levels were independently correlated with National Institutes of Health Stroke Scale scores and hematoma volume, were significantly increased in the order of six-month mRS scores from 0 to 6 and were independently correlated with six-month mRS scores. Serum SPARCL1 levels were linearly related to risks of poor six-month prognosis and END under restricted cubic spline, had significant efficiency under receiver operating characteristic (ROC) curve and were independently associated with END and poor prognosis. Subgroup analysis confirmed that no interactions existed for associations of serum SPARCL1 levels with other variables, such as age, gender and some specific vascular risk factors. END and poor prognosis prediction models integrating serum SPARCL1 were displayed using the two nomograms. The poor prognosis prediction model, but END prediction model not, performed well under calibration curve, decision curve and ROC curve. Conclusion A substantial elevation of serum SPARCL1 levels during the early period after ICH is independently related to illness severity and poor neurological outcomes, thus signifying that serum SPARCL1 may appear as a prognostic biomarker of ICH.
Collapse
Affiliation(s)
- Jianjun Huang
- Department of Neurosurgery, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| | - Fangping Shao
- Emergency Department, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| | - Bin Chen
- Department of Neurosurgery, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| | - Guanrong Zheng
- Department of Neurosurgery, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| | - Jia Shen
- Department of Neurosurgery, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| | - Shenzhong Qiu
- Department of Neurosurgery, The First People’s Hospital of Fuyang District of Hangzhou City, Hangzhou, People’s Republic of China
| |
Collapse
|
4
|
Kalisvaart ACJ, Abrahart AH, Coney AT, Gu S, Colbourne F. Intracranial Pressure Dysfunction Following Severe Intracerebral Hemorrhage in Middle-Aged Rats. Transl Stroke Res 2023; 14:970-986. [PMID: 36367666 PMCID: PMC10640482 DOI: 10.1007/s12975-022-01102-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/14/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
Rising intracranial pressure (ICP) aggravates secondary injury and heightens risk of death following intracerebral hemorrhage (ICH). Long-recognized compensatory mechanisms that lower ICP include reduced cerebrospinal fluid and venous blood volumes. Recently, we identified another compensatory mechanism in severe stroke, a decrease in cerebral parenchymal volume via widespread reductions in cell volume and extracellular space (tissue compliance). Here, we examined how age affects tissue compliance and ICP dynamics after severe ICH in rats (collagenase model). A planned comparison to historical young animal data revealed that aged SHAMs (no stroke) had significant cerebral atrophy (9% reduction, p ≤ 0.05), ventricular enlargement (9% increase, p ≤ 0.05), and smaller CA1 neuron volumes (21%, p ≤ 0.05). After ICH in aged animals, contralateral striatal neuron density and CA1 astrocyte density significantly increased (12% for neurons, 7% for astrocytes, p ≤ 0.05 vs. aged SHAMs). Unlike young animals, other regions in aged animals did not display significantly reduced cell soma volume despite a few trends. Nonetheless, overall contralateral hemisphere volume was 10% smaller in aged ICH animals compared to aged SHAMs (p ≤ 0.05). This age-dependent pattern of tissue compliance is not due to absent ICH-associated mass effect (83.2 mm3 avg. bleed volume) as aged ICH animals had significantly elevated mean and peak ICP (p ≤ 0.01), occurrence of ICP spiking events, as well as bilateral evidence of edema (e.g., 3% in injured brain, p ≤ 0.05 vs. aged SHAMs). Therefore, intracranial compliance reserve changes with age; after ICH, these and other age-related changes may cause greater fluctuation from baseline, increasing the chance of adverse outcomes like mortality.
Collapse
Affiliation(s)
| | - Ashley H Abrahart
- Department of Psychology, University of Alberta, Edmonton, AB, Canada
| | - Alyvia T Coney
- Department of Psychology, University of Alberta, Edmonton, AB, Canada
| | - Sherry Gu
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Frederick Colbourne
- Department of Psychology, University of Alberta, Edmonton, AB, Canada.
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
| |
Collapse
|
5
|
Fu X, Zhou G, Zhuang J, Xu C, Zhou H, Peng Y, Cao Y, Zeng H, Li J, Yan F, Wang L, Chen G. White Matter Injury After Intracerebral Hemorrhage. Front Neurol 2021; 12:562090. [PMID: 34177751 PMCID: PMC8222731 DOI: 10.3389/fneur.2021.562090] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 05/05/2021] [Indexed: 11/13/2022] Open
Abstract
Spontaneous intracerebral hemorrhage (ICH) accounts for 15% of all stroke cases. ICH is a devastating form of stroke associated with high morbidity, mortality, and disability. Preclinical studies have explored the mechanisms of neuronal death and gray matter damage after ICH. However, few studies have examined the development of white matter injury (WMI) following ICH. Research on WMI indicates that its pathophysiological presentation involves axonal damage, demyelination, and mature oligodendrocyte loss. However, the detailed relationship and mechanism between WMI and ICH remain unclear. Studies of other acute brain insults have indicated that WMI is strongly correlated with cognitive deficits, neurological deficits, and depression. The degree of WMI determines the short- and long-term prognosis of patients with ICH. This review demonstrates the structure and functions of the white matter in the healthy brain and discusses the pathophysiological mechanism of WMI following ICH. Our review reveals that the development of WMI after ICH is complex; therefore, comprehensive treatment is essential. Understanding the relationship between WMI and other brain cells may reveal therapeutic targets for the treatment of ICH.
Collapse
Affiliation(s)
- Xiongjie Fu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Guoyang Zhou
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianfeng Zhuang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chaoran Xu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hang Zhou
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yucong Peng
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yang Cao
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hanhai Zeng
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianru Li
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Feng Yan
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lin Wang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Gao Chen
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| |
Collapse
|
6
|
Chen S, Zou Q, Guo Q, Chen Y, Kuang X, Zhang Y, Liu Y, Wu W, Li G, Tu L, Tong J, Li S, Ma L, Li Q. SPARC Knockdown Reduces Glutamate-Induced HT22 Hippocampal Nerve Cell Damage by Regulating Autophagy. Front Neurosci 2021; 14:581441. [PMID: 33584170 PMCID: PMC7874057 DOI: 10.3389/fnins.2020.581441] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/07/2020] [Indexed: 12/31/2022] Open
Abstract
Secreted protein acidic and rich in cysteine (SPARC) is a matricellular protein involved in the extracellular matrix and interactions between cells during neural development of the central nervous system (CNS). Oxidative glutamate toxicity is involved in CNS diseases, including epilepsy, Alzheimer’s disease, and ischemic stroke. However, the molecular mechanism of nerve injury is not fully understood in CNS diseases. Herein, the glutamate-induced nerve damage model was used to explore the molecular mechanisms affecting nerve damage. The levels of SPARC and autophagy were increased in glutamate-induced HT22 hippocampal nerve injury. In summary, the current study confirmed that SPARC regulates autophagy in HT22 hippocampal nerve cells, and its knockdown reduces the glutamate-induced HT22 hippocampal nerve injury by inhibiting autophagy. These findings suggested that SPARC plays a crucial role in nerve injury of CNS diseases.
Collapse
Affiliation(s)
- Shuang Chen
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Qin Zou
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Qiang Guo
- Epilepsy Center, Guangdong Sanjiu Brain Hospital, Guangzhou, China
| | - Yongmin Chen
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Xi Kuang
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Hainan Health Vocational College, Haikou, China
| | - Yukang Zhang
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Yan Liu
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Wengang Wu
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Ge Li
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Linzhi Tu
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Jingyi Tong
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Songrong Li
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Lin Ma
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Qifu Li
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| |
Collapse
|
7
|
Chen S, Zou Q, Chen Y, Kuang X, Wu W, Guo M, Cai Y, Li Q. Regulation of SPARC family proteins in disorders of the central nervous system. Brain Res Bull 2020; 163:178-189. [DOI: 10.1016/j.brainresbull.2020.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/29/2020] [Accepted: 05/05/2020] [Indexed: 12/14/2022]
|
8
|
Li L, Li R, Zacharek A, Wang F, Landschoot-Ward J, Chopp M, Chen J, Cui X. ABCA1/ApoE/HDL Signaling Pathway Facilitates Myelination and Oligodendrogenesis after Stroke. Int J Mol Sci 2020; 21:ijms21124369. [PMID: 32575457 PMCID: PMC7352241 DOI: 10.3390/ijms21124369] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 02/07/2023] Open
Abstract
ATP-binding cassette transporter A1 (ABCA1) plays an important role in the regulation of apolipoprotein E (ApoE) and the biogenesis of high-density lipoprotein (HDL) cholesterol in the mammalian brain. Cholesterol is a major source for myelination. Here, we investigate whether ABCA1/ApoE/HDL contribute to myelin repair and oligodendrogenesis in the ischemic brain after stroke. Specific brain ABCA1-deficient (ABCA1-B/-B) and ABCA1-floxed (ABCA1fl/fl) control mice were subjected to permanent distal middle-cerebral-artery occlusion (dMCAo) and were intracerebrally administered (1) artificial mouse cerebrospinal fluid (CSF) as vehicle control, (2) human plasma HDL3, and (3) recombined human ApoE2 starting 24 h after dMCAo for 14 days. All stroke mice were sacrificed 21 days after dMCAo. The ABCA1-B/-B–dMCAo mice exhibit significantly reduced myelination and oligodendrogenesis in the ischemic brain as well as decreased functional outcome 21 days after stroke compared with ABCA1fl/fl mice; administration of human ApoE2 or HDL3 in the ischemic brain significantly attenuates the deficits in myelination and oligodendrogenesis in ABCA1-B/-B–dMCAo mice ( p < 0.05, n = 9/group). In vitro, ABCA1-B/-B reduces ApoE expression and decreases primary oligodendrocyte progenitor cell (OPC) migration and oligodendrocyte maturation; HDL3 and ApoE2 treatment significantly reverses ABCA1-B/-B-induced reduction in OPC migration and oligodendrocyte maturation. Our data indicate that the ABCA1/ApoE/HDL signaling pathway contributes to myelination and oligodendrogenesis in the ischemic brain after stroke.
Collapse
Affiliation(s)
- Li Li
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Rongwen Li
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Alex Zacharek
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Fengjie Wang
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Julie Landschoot-Ward
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Michael Chopp
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
- Department of Physics, Oakland University, Rochester, MI 48309, USA
| | - Jieli Chen
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
| | - Xu Cui
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA; (L.L.); (R.L.); (A.Z.); (F.W.); (J.L.-W.); (M.C.); (J.C.)
- Correspondence: ; Tel.: 01-313-916-2864
| |
Collapse
|
9
|
Kawakita F, Kanamaru H, Asada R, Suzuki H. Potential roles of matricellular proteins in stroke. Exp Neurol 2019; 322:113057. [DOI: 10.1016/j.expneurol.2019.113057] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/26/2019] [Accepted: 09/05/2019] [Indexed: 12/16/2022]
|
10
|
Chaudhary N, Pandey AS, Wang X, Xi G. Hemorrhagic stroke-Pathomechanisms of injury and therapeutic options. CNS Neurosci Ther 2019; 25:1073-1074. [PMID: 31583834 PMCID: PMC6776738 DOI: 10.1111/cns.13225] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 12/21/2022] Open
Affiliation(s)
- Neeraj Chaudhary
- Department of NeurosurgeryUniversity of MichiganAnn ArborMichigan
- Department of RadiologyUniversity of MichiganAnn ArborMichigan
| | - Aditya S. Pandey
- Department of NeurosurgeryUniversity of MichiganAnn ArborMichigan
- Department of RadiologyUniversity of MichiganAnn ArborMichigan
| | - Xiaoying Wang
- Departments of Neurosurgery and NeurologyTulane UniversityNew OrleansLouisiana
| | - Guohua Xi
- Department of NeurosurgeryUniversity of MichiganAnn ArborMichigan
| |
Collapse
|
11
|
Jiang Y, Wei K, Zhang X, Feng H, Hu R. White matter repair and treatment strategy after intracerebral hemorrhage. CNS Neurosci Ther 2019; 25:1113-1125. [PMID: 31578825 PMCID: PMC6823871 DOI: 10.1111/cns.13226] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/08/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023] Open
Abstract
The predilection site of intracerebral hemorrhage (ICH) is in the basal ganglia, which is rich in white matter (WM) fiber bundles, such as cerebrospinal tract in the internal capsule. ICH induced damage to this area can easily lead to severe neurological dysfunction and affects the prognosis and quality of life of patients. At present, the pathophysiological mechanisms of white matter injury (WMI) after ICH have attracted researchers' attention, but studies on the repair and recovery mechanisms and therapy strategies remain rare. In this review, we mainly summarized the WM recovery and treatment strategies after ICH by updating the WMI-related content by reviewing the latest researches and proposing the bottleneck of the current research.
Collapse
Affiliation(s)
- Yi‐Bin Jiang
- Department of NeurosurgerySouthwest HospitalThird Military Medical UniversityChongqingChina
| | - Kai‐Yan Wei
- Department of NeurosurgerySouthwest HospitalThird Military Medical UniversityChongqingChina
| | - Xu‐Yang Zhang
- Department of NeurosurgerySouthwest HospitalThird Military Medical UniversityChongqingChina
| | - Hua Feng
- Department of NeurosurgerySouthwest HospitalThird Military Medical UniversityChongqingChina
| | - Rong Hu
- Department of NeurosurgerySouthwest HospitalThird Military Medical UniversityChongqingChina
| |
Collapse
|
12
|
Huang HB, Yang SB, Shen LJ, Lv QW, Guo M, Zhou J, Li Z, Yang CS, Wang LY, Zhang H. A prospective study on serum secreted protein acidic and rich in cysteine-like 1 as a prognostic marker for severe traumatic brain injury. Clin Chim Acta 2019; 491:19-23. [PMID: 30639238 DOI: 10.1016/j.cca.2019.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/05/2019] [Accepted: 01/08/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Secreted protein acidic and rich in cysteine-like 1 (SPARCL1) regulates synaptic stability with upregulation throughout axonal regeneration. Our study aims to determine the correlation of serum SPARCL1 concentrations with the severity and in-hospital mortality of severe traumatic brain injury (sTBI). METHODS A total of 102 consecutively recruited patients admitted for sTBI and 102 randomly selected healthy controls were included in this observational prospective study. Serum SPARCL1 concentrations were measured and correlated with Glasgow coma scale (GCS) scores and in-hospital mortality using multivariate analysis. RESULTS Compared with controls (median, 0.22 ng/ml; interquartile range, 0.19-0.41 ng/ml), patients had significantly higher SPARCL1 concentrations (median, 3.29 ng/ml; interquartile range, 1.88-4.37; P < 0.001). There was an independently correlation between SPARCL1 concentrations and GCS scores (t = -7.011, P < 0.001). We found a high area under receiver operating curve (AUC) of serum SPARCL1 concentrations to predict in-hospital mortality (AUC, 0.822; 95% confidence interval, 0.734-0.891). In the multiple logistic regression analysis, serum SPARCL1 concentrations >3.29 ng/ml was independently associated with in-hospital mortality (odds ratio = 10.052, 95% confidence interval = 1.918-52.686, P = 0.006). CONCLUSIONS The novel findings of our study are that sTBI patients had an increase of serum SPARCL1 concentrations, and that there is an association between high serum SPARCL1 concentrations and sTBI mortality or trauma severity.
Collapse
Affiliation(s)
- Hang-Bin Huang
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China.
| | - Song-Bin Yang
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Liang-Jun Shen
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Qing-Wei Lv
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Mi Guo
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Jing Zhou
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Zhao Li
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Chun-Song Yang
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Li-Yun Wang
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| | - Han Zhang
- Department of Neurosurgery, Shengzhou People's Hospital, Shengzhou Branch Hospital of The First Affiliated Hospital of Zhejiang University, 666 Dangui Road, Shenzhou 312400, Zhejiang Province, China
| |
Collapse
|
13
|
Ambrosius W, Michalak S, Kazmierski R, Lukasik M, Andrzejewska N, Kozubski W. The Association between Serum Matricellular Protein: Secreted Protein Acidic and Rich in Cysteine-Like 1 Levels and Ischemic Stroke Severity. J Stroke Cerebrovasc Dis 2018; 27:682-685. [DOI: 10.1016/j.jstrokecerebrovasdis.2017.09.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 09/05/2017] [Accepted: 09/28/2017] [Indexed: 01/13/2023] Open
|
14
|
Jha MK, Kim JH, Song GJ, Lee WH, Lee IK, Lee HW, An SSA, Kim S, Suk K. Functional dissection of astrocyte-secreted proteins: Implications in brain health and diseases. Prog Neurobiol 2017; 162:37-69. [PMID: 29247683 DOI: 10.1016/j.pneurobio.2017.12.003] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/23/2017] [Accepted: 12/08/2017] [Indexed: 02/07/2023]
Abstract
Astrocytes, which are homeostatic cells of the central nervous system (CNS), display remarkable heterogeneity in their morphology and function. Besides their physical and metabolic support to neurons, astrocytes modulate the blood-brain barrier, regulate CNS synaptogenesis, guide axon pathfinding, maintain brain homeostasis, affect neuronal development and plasticity, and contribute to diverse neuropathologies via secreted proteins. The identification of astrocytic proteome and secretome profiles has provided new insights into the maintenance of neuronal health and survival, the pathogenesis of brain injury, and neurodegeneration. Recent advances in proteomics research have provided an excellent catalog of astrocyte-secreted proteins. This review categorizes astrocyte-secreted proteins and discusses evidence that astrocytes play a crucial role in neuronal activity and brain function. An in-depth understanding of astrocyte-secreted proteins and their pathways is pivotal for the development of novel strategies for restoring brain homeostasis, limiting brain injury/inflammation, counteracting neurodegeneration, and obtaining functional recovery.
Collapse
Affiliation(s)
- Mithilesh Kumar Jha
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, Republic of Korea; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Jong-Heon Kim
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Gyun Jee Song
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Won-Ha Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - In-Kyu Lee
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Ho-Won Lee
- Department of Neurology, Brain Science and Engineering Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Seong Soo A An
- Department of BioNano Technology, Gachon University, Gyeonggi-do, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, Republic of Korea.
| |
Collapse
|
15
|
Bridel C, Koel-Simmelink MJA, Peferoen L, Derada Troletti C, Durieux S, Gorter R, Nutma E, Gami P, Iacobaeus E, Brundin L, Kuhle J, Vrenken H, Killestein J, Piersma SR, Pham TV, De Vries HE, Amor S, Jimenez CR, Teunissen CE. Brain endothelial cell expression of SPARCL-1 is specific to chronic multiple sclerosis lesions and is regulated by inflammatory mediators in vitro. Neuropathol Appl Neurobiol 2017; 44:404-416. [PMID: 28543098 DOI: 10.1111/nan.12412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 05/18/2017] [Accepted: 05/24/2017] [Indexed: 02/05/2023]
Abstract
AIMS Cell matrix modulating protein SPARCL-1 is highly expressed by astrocytes during CNS development and following acute CNS damage. Applying NanoLC-MS/MS to CSF of RRMS and SPMS patients, we identified SPARCL-1 as differentially expressed between these two stages of MS, suggesting a potential as CSF biomarker to differentiate RRMS from SPMS and a role in MS pathogenesis. METHODS This study examines the potential of SPARCL-1 as CSF biomarker discriminating RRMS from SPMS in three independent cohorts (n = 249), analyses its expression pattern in MS lesions (n = 26), and studies its regulation in cultured human brain microvasculature endothelial cells (BEC) after exposure to MS-relevant inflammatory mediators. RESULTS SPARCL-1 expression in CSF was significantly higher in SPMS compared to RRMS in a Dutch cohort of 76 patients. This finding was not replicated in 2 additional cohorts of MS patients from Sweden (n = 81) and Switzerland (n = 92). In chronic MS lesions, but not active lesions or NAWM, a vessel expression pattern of SPARCL-1 was observed in addition to the expression by astrocytes. EC were found to express SPARCL-1 in chronic MS lesions, and SPARCL-1 expression was regulated by MS-relevant inflammatory mediators in cultured human BEC. CONCLUSIONS Conflicting results of SPARCL-1's differential expression in CSF of three independent cohorts of RRMS and SPMS patients precludes its use as biomarker for disease progression. The expression of SPARCL-1 by BEC in chronic MS lesions together with its regulation by inflammatory mediators in vitro suggest a role for SPARCL-1 in MS neuropathology, possibly at the brain vascular level.
Collapse
Affiliation(s)
- C Bridel
- Department of Clinical Chemistry, Neurochemistry Lab and Biobank, VU Medical Centre, Amsterdam, The Netherlands
| | - M J A Koel-Simmelink
- Department of Clinical Chemistry, Neurochemistry Lab and Biobank, VU Medical Centre, Amsterdam, The Netherlands
| | - L Peferoen
- Department of Pathology, VU Medical Centre, Amsterdam, The Netherlands
| | - C Derada Troletti
- Department of Molecular Cell Biology and Immunology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - S Durieux
- Department of Clinical Chemistry, Neurochemistry Lab and Biobank, VU Medical Centre, Amsterdam, The Netherlands
| | - R Gorter
- Department of Pathology, VU Medical Centre, Amsterdam, The Netherlands
| | - E Nutma
- Department of Pathology, VU Medical Centre, Amsterdam, The Netherlands
| | - P Gami
- Department of Pathology, VU Medical Centre, Amsterdam, The Netherlands
| | - E Iacobaeus
- Department of Clinical Neuroscience, Neuroimmunology Unit, Karolinska Institute, Solna, Sweden.,Center for Molecular Medicine, Stockholm, Sweden
| | - L Brundin
- Department of Clinical Neuroscience, Neuroimmunology Unit, Karolinska Institute, Solna, Sweden.,Center for Molecular Medicine, Stockholm, Sweden
| | - J Kuhle
- Neurology, Department of Medicine, Biomedicine and Clinical Research, University Hospital Basel, Basel, Switzerland
| | - H Vrenken
- Department of Radiology and Nuclear Medicine and Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
| | - J Killestein
- Department of Neurology, MS Centre Amsterdam, VU Medical Centre, Amsterdam, The Netherlands
| | - S R Piersma
- Department of Medical Oncology, OncoProteomics Laboratory, VU Medical Centre, Amsterdam, The Netherlands
| | - T V Pham
- Department of Medical Oncology, OncoProteomics Laboratory, VU Medical Centre, Amsterdam, The Netherlands
| | - H E De Vries
- Department of Molecular Cell Biology and Immunology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - S Amor
- Department of Pathology, VU Medical Centre, Amsterdam, The Netherlands.,Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry, London, UK
| | - C R Jimenez
- Department of Medical Oncology, OncoProteomics Laboratory, VU Medical Centre, Amsterdam, The Netherlands
| | - C E Teunissen
- Department of Clinical Chemistry, Neurochemistry Lab and Biobank, VU Medical Centre, Amsterdam, The Netherlands
| |
Collapse
|
16
|
White Matter Injury and Recovery after Hypertensive Intracerebral Hemorrhage. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6138424. [PMID: 28680884 PMCID: PMC5478825 DOI: 10.1155/2017/6138424] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/07/2017] [Indexed: 12/26/2022]
Abstract
Hypertensive intracerebral hemorrhage (ICH) could very probably trigger white matter injury in patients. Through the continuous study of white matter injury after hypertensive ICH, we achieve a more profound understanding of the pathophysiological mechanism of its occurrence and development. At the same time, we found a series of drugs and treatment methods for the white matter repair. In the current reality, the research paradigm of white matter injury after hypertensive ICH is relatively obsolete or incomplete, and there are still lots of deficiencies in the research. In the face of the profound changes of stroke research perspective, we believe that the combination of the lenticulostriate artery, nerve nuclei of the hypothalamus-thalamus-basal ganglia, and the white matter fibers located within the capsula interna will be beneficial to the research of white matter injury and repair. This paper has classified and analyzed the study of white matter injury and repair after hypertensive ICH and also rethought the shortcomings of the current research. We hope that it could help researchers further explore and study white matter injury and repair after hypertensive ICH.
Collapse
|
17
|
SPARCL1 a novel player in cancer biology. Crit Rev Oncol Hematol 2017; 109:63-68. [DOI: 10.1016/j.critrevonc.2016.11.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 11/22/2016] [Indexed: 01/02/2023] Open
|
18
|
Lively S, Hutchings S, Schlichter LC. Molecular and Cellular Responses to Interleukin-4 Treatment in a Rat Model of Transient Ischemia. J Neuropathol Exp Neurol 2016; 75:1058-1071. [PMID: 27634961 PMCID: PMC5070459 DOI: 10.1093/jnen/nlw081] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Within hours after stroke, potentially cytotoxic pro-inflammatory mediators are elevated within the brain; thus, one potential therapeutic strategy is to reduce them and skew the brain toward an anti-inflammatory state. Because interleukin-4 (IL-4) treatment induces an anti-inflammatory, "alternative-activation" state in microglia and macrophages in vitro, we tested the hypothesis that early supplementation of the brain with IL-4 can shift it toward an anti-inflammatory state and reduce damage after transient focal ischemia. Adult male rat striata were injected with endothelin-1, with or without co-injection of IL-4. Inflammation, glial responses and damage to neurons and white matter were quantified from 1 to 7 days later. At 1 day, IL-4 treatment increased striatal expression of several anti-inflammatory markers (ARG1, CCL22, CD163, PPARγ), increased phagocytic (Iba1-positive, CD68-positive) microglia/macrophages, and increased VEGF-A-positive infiltrating neutrophils in the infarcts. At 7 days, there was evidence of sustained, propagating responses. IL-4 increased CD206, CD200R1, IL-4Rα, STAT6, PPARγ, CD11b, and TLR2 expression and increased microglia/macrophages in the infarct and astrogliosis outside the infarct. Neurodegeneration and myelin damage were not reduced, however. The sustained immune and glial responses when resolution and repair processes have begun warrant further studies of IL-4 treatment regimens and long-term outcomes.
Collapse
Affiliation(s)
- Starlee Lively
- From the Krembil Research Institute, University Health Network, Toronto, ON, Canada (SL, SH, LCS); Department of Physiology, University of Toronto, Toronto, ON, Canada (SH, LCS)
| | - Sarah Hutchings
- From the Krembil Research Institute, University Health Network, Toronto, ON, Canada (SL, SH, LCS); Department of Physiology, University of Toronto, Toronto, ON, Canada (SH, LCS)
| | - Lyanne C Schlichter
- From the Krembil Research Institute, University Health Network, Toronto, ON, Canada (SL, SH, LCS); Department of Physiology, University of Toronto, Toronto, ON, Canada (SH, LCS)
| |
Collapse
|
19
|
Hashimoto N, Sato T, Yajima T, Fujita M, Sato A, Shimizu Y, Shimada Y, Shoji N, Sasano T, Ichikawa H. SPARCL1-containing neurons in the human brainstem and sensory ganglion. Somatosens Mot Res 2016; 33:112-7. [PMID: 27357901 DOI: 10.1080/08990220.2016.1197115] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Secreted protein, acidic and rich in cysteine-like 1 (SPARCL1) is a member of the osteonectin family of proteins. In this study, immunohistochemistry for SPARCL1 was performed to obtain its distribution in the human brainstem, cervical spinal cord, and sensory ganglion. SPARCL1-immunoreactivity was detected in neuronal cell bodies including perikarya and proximal dendrites, and the neuropil. The motor nuclei of the IIIrd, Vth, VIth, VIIth, IXth, Xth, XIth, and XIIth cranial nerves and spinal nerves contained many SPARCL1-immunoreactive (-IR) neurons with medium-sized to large cell bodies. Small and medium-sized SPARCL1-IR neurons were distributed in sensory nuclei of the Vth, VIIth, VIIIth, IXth, and Xth cranial nerves. In the medulla oblongata, the dorsal column nuclei also had small to medium-sized SPARCL1-IR neurons. In addition, SPARCL1-IR neurons were detected in the nucleus of the trapezoid body and pontine nucleus within the pons and the arcuate nucleus in the medulla oblongata. In the cervical spinal cord, the ventral horn contained some SPARCL1-IR neurons with large cell bodies. These findings suggest that SPARCL1-containing neurons function to relay and regulate motor and sensory signals in the human brainstem. In the dorsal root (DRG) and trigeminal ganglia (TG), primary sensory neurons contained SPARCL1-immunoreactivity. The proportion of SPARCL1-IR neurons in the TG (mean ± SD, 39.9 ± 2.4%) was higher than in the DRG (30.6 ± 2.1%). SPARCL1-IR neurons were mostly medium-sized to large (mean ± SD, 1494.5 ± 708.3 μm(2); range, 320.4-4353.4 μm(2)) in the DRG, whereas such neurons were of various cell body sizes in the TG (mean ± SD, 1291.2 ± 532.8 μm(2); range, 209.3-4326.4 μm(2)). There appears to be a SPARCL1-containing sensory pathway in the ganglion and brainstem of the spinal and trigeminal nervous systems.
Collapse
Affiliation(s)
- Naoya Hashimoto
- a Division of Oral Diagnosis , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Tadasu Sato
- b Division of Oral and Craniofacial Anatomy , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Takehiro Yajima
- c Division of Operative Dentistry , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Masatoshi Fujita
- d Division of Dental Anesthesiology and Pain Management , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Ayumi Sato
- b Division of Oral and Craniofacial Anatomy , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Yoshinaka Shimizu
- b Division of Oral and Craniofacial Anatomy , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Yusuke Shimada
- a Division of Oral Diagnosis , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Noriaki Shoji
- a Division of Oral Diagnosis , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Takashi Sasano
- a Division of Oral Diagnosis , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| | - Hiroyuki Ichikawa
- b Division of Oral and Craniofacial Anatomy , Graduate School of Dentistry, Tohoku University , Sendai , Japan
| |
Collapse
|
20
|
After Intracerebral Hemorrhage, Oligodendrocyte Precursors Proliferate and Differentiate Inside White-Matter Tracts in the Rat Striatum. Transl Stroke Res 2016; 7:192-208. [PMID: 26743212 PMCID: PMC4873533 DOI: 10.1007/s12975-015-0445-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 12/17/2015] [Accepted: 12/28/2015] [Indexed: 02/06/2023]
Abstract
Damage to myelinated axons contributes to neurological deficits after acute CNS injury, including ischemic and hemorrhagic stroke. Potential treatments to promote re-myelination will require fully differentiated oligodendrocytes, but almost nothing is known about their fate following intracerebral hemorrhage (ICH). Using a rat model of ICH in the striatum, we quantified survival, proliferation, and differentiation of oligodendrocyte precursor cells (OPCs) (at 1, 3, 7, 14, and 28 days) in the peri-hematoma region, surrounding striatum, and contralateral striatum. In the peri-hematoma, the density of Olig2+ cells increased dramatically over the first 7 days, and this coincided with disorganization and fragmentation of myelinated axon bundles. Very little proliferation (Ki67+) of Olig2+ cells was seen in the anterior subventricular zone from 1 to 28 days. However, by 3 days, many were proliferating in the peri-hematoma region, suggesting that local proliferation expands their population. By 14 days, the density of Olig2+ cells declined in the peri-hematoma region, and, by 28 days, it reached the low level seen in the contralateral striatum. At these later times, many surviving axons were aligned into white-matter bundles, which appeared less swollen or fragmented. Oligodendrocyte cell maturation was prevalent over the 28-day period. Densities of immature OPCs (NG2+Olig2+) and mature (CC-1+Olig2+) oligodendrocytes in the peri-hematoma increased dramatically over the first week. Regardless of the maturation state, they increased preferentially inside the white-matter bundles. These results provide evidence that endogenous oligodendrocyte precursors proliferate and differentiate in the peri-hematoma region and have the potential to re-myelinate axon tracts after hemorrhagic stroke.
Collapse
|
21
|
Astrocyte-secreted matricellular proteins in CNS remodelling during development and disease. Neural Plast 2014; 2014:321209. [PMID: 24551460 PMCID: PMC3914553 DOI: 10.1155/2014/321209] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 12/18/2013] [Indexed: 12/20/2022] Open
Abstract
Matricellular proteins are secreted, nonstructural proteins that regulate the extracellular matrix (ECM) and interactions between cells through modulation of growth factor signaling, cell adhesion, migration, and proliferation. Despite being well described in the context of nonneuronal tissues, recent studies have revealed that these molecules may also play instrumental roles in central nervous system (CNS) development and diseases. In this minireview, we discuss the matricellular protein families SPARC (secreted protein acidic and rich in cysteine), Hevin/SC1 (SPARC-like 1), TN-C (Tenascin C), TSP (Thrombospondin), and CCN (CYR61/CTGF/NOV), which are secreted by astrocytes during development. These proteins exhibit a reduced expression in adult CNS but are upregulated in reactive astrocytes following injury or disease, where they are well placed to modulate the repair processes such as tissue remodeling, axon regeneration, glial scar formation, angiogenesis, and rewiring of neural circuitry. Conversely, their reexpression in reactive astrocytes may also lead to detrimental effects and promote the progression of neurodegenerative diseases.
Collapse
|