Abstract:
:Previous studies have postulated that neuroinflammation can induce two different types of reactive astrocytes, A1 and A2. A1 astrocytes may be harmful, whereas A2 astrocytes may be protective. Specifically, prokineticin 2 (PK2) has been shown to regulate neuron-astrocyte signaling mechanism by promoting an alternative A2-protective phenotype in astrocytes. This study aimed to examine the role of PK2 in early brain injury (EBI) caused by subarachnoid hemorrhage (SAH). SAH-induced astrocytic activation was confirmed by Western blotting. We confirmed C3 and PTX3 as appropriate reactivity markers for discriminating A1 and A2 astrocytes, respectively. We also observed SAH-induced astrocytic activation in SAH patients. The increase of PK2 in neurons after SAH in both humans and rats suggested a possible relationship between PK2 and SAH pathology. PK2 knockdown promoted an A1 astrocytic phenotype with upregulation of neurodegenerative indicators, while intravascular injection of recombinant PK2 (rPK2) promoted A2 astrocytic phenotype and reduced SAH-induced neuronal injury and behavioral dysfunction. Finally, we identified that tumor necrosis factor alpha (TNF-α) was sufficient to elevate the protein level of PK2 in neurons and enhance astrocytic activation in vitro. Moreover, rPK2 selectively promoted astrocytic polarization to an A2 phenotype under a TNF-α stimulus and induced phosphorylation of signal transducer and activator of transcription 3 (STAT3), suggesting that SAH-induced increases in PK2 may function as an endogenous mechanism for self-repair. Collectively, our findings support that enhancing PK2 expression or administration of rPK2 may induce a selective modulation of astrocytic polarization to a protective phenotype following SAH-like stimuli.
journal_name
Mol Neurobioljournal_title
Molecular neurobiologyauthors
Ma M,Li H,Wu J,Zhang Y,Shen H,Li X,Wang Z,Chen Gdoi
10.1007/s12035-020-01990-7subject
Has Abstractpub_date
2020-09-01 00:00:00pages
3744-3758issue
9eissn
0893-7648issn
1559-1182pii
10.1007/s12035-020-01990-7journal_volume
57pub_type
杂志文章abstract::Specific variations in the amino acid sequence of prion protein (PrP) are key determinants of susceptibility to prion diseases. We previously showed that an amino acid substitution specific to canids confers resistance to prion diseases when expressed in mice and demonstrated its dominant-negative protective effect ag...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-019-1535-0
更新日期:2019-09-01 00:00:00
abstract::α-Lipoic acid-plus (LAP), an amine derivative of α-lipoic acid (LA), could protect cells against oxidant challenges via chelating intralysosomal iron. However, the application of LAP in experimental subarachnoid hemorrhage (SAH) is still not well known. This study was designed to evaluate the potential neuroprotection...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-014-8846-y
更新日期:2015-08-01 00:00:00
abstract::The considerable roles of transcription factors, and the associated signaling molecules that activate them, are well deciphered in the context of various biological processes. One of the important transcription factors, the transforming growth factor-β (TGF-β) pathway, has a profound role in neuronal cell survival-a p...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-014-8988-y
更新日期:2016-01-01 00:00:00
abstract::Hyperpalatable diets (HP) impair brain metabolism, and regular physical exercise has an apparent opposite effect. Here, we combined a prior long-term exposure to HP diet followed by physical exercise and evaluated the impact on some neuroenergetic components and on cognitive performance. We assessed the extracellular ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-016-0119-5
更新日期:2017-10-01 00:00:00
abstract::Voltage-gated calcium channels (VGCCs) play a critical role in neuroinflammatory diseases, such as multiple sclerosis (MS). CTK 01512-2 is a recombinant version of the peptide Phα1β derived from the spider Phoneutria nigriventer, which inhibits N-type VGCC/TRPA1-mediated calcium influx. We investigated the effects of ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-018-1049-1
更新日期:2018-12-01 00:00:00
abstract::Dodecafluoropentane emulsion (DDFPe) in 250 nm nanodroplets seems to swell modestly to accept and carry large amounts of oxygen in the body at >29 °C. Small particle size allows oxygen delivery even into hypoxic tissue unreachable by erythrocytes. Using permanent cerebral embolic occlusion in rabbits, we assessed DDFP...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-013-8495-6
更新日期:2013-10-01 00:00:00
abstract::Maternal separation (MS) causes long-lasting epigenetic changes in the brain and increases vulnerability to traumatic events in adulthood. Of interest, there may be sex-specific differences in these epigenetic changes. In this study, the extent of histone acetylation in the hippocampus (HIP) and the expression of BDNF...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-020-02224-6
更新日期:2020-11-27 00:00:00
abstract::The neuropathological hallmarks of Alzheimer's disease (AD) include the presence of extracellular amyloid-β peptide (Aβ) in the form of amyloid plaques and neuronal loss. Neural stem cell (NSC) is being scrutinized as a promising cell replacement therapy for various neurodegenerative diseases. However, the unfavorable...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-014-9069-y
更新日期:2016-03-01 00:00:00
abstract::Germline and somatic mutations in key genes of the mammalian target of rapamycin (mTOR) pathway have been identified in seizure-associated disorders. mTOR mutations lead to aberrant activation of mTOR signaling, and, although affected neurons are critical for epileptogenesis, the role of mTOR activation in glial cells...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-015-9590-7
更新日期:2017-01-01 00:00:00
abstract::The gammaretroviral human endogenous retrovirus (HERV) families MRSV/HERV-W and HERV-H (including the closely related HERV-Fc1) are associated with an increased risk of multiple sclerosis (MS). Complete HERV sequences betray their endogenous retroviral origin, with open reading frames in gag, pro, pol and env being fl...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1007/s12035-018-1255-x
更新日期:2019-04-01 00:00:00
abstract::Tourette syndrome (TS) is a childhood-onset neurological disorder. To date, accurate TS diagnosis remains challenging due to its varied clinical expressions and dependency on qualitative description of symptoms. Therefore, identifying accurate and objective neuroimaging biomarkers may help improve early TS diagnosis. ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-017-0519-1
更新日期:2018-04-01 00:00:00
abstract::Although the pathogenesis of Alzheimer's disease (AD) remains unclear, some molecular aspects that precede or accompany the deposit of β-amyloid in senile plaques attract attention, such as calcium dysregulation and neuroinflammation. It has been suggested that the Ca2+/calmodulin-dependent protein phosphatase, calcin...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-019-01718-2
更新日期:2020-01-01 00:00:00
abstract::Metabolic defects are common pathological phenomena following traumatic brain injury (TBI) which contribute to poor prognosis. Brain-derived neurotrophic factor (BDNF) is an important regulator of neuronal survival, development, function, and plasticity. This study was designed to investigate the potential effects of ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-017-0576-5
更新日期:2018-04-01 00:00:00
abstract::The question of how the cell surface molecules may be specifically delivered to subdomains of neurons is of particular interest considering that polarized sorting to the axon could enable adhesion glycoproteins to induce fasciculation of axonal tracts, guidance to the target cell, and the establishment of synaptic con...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1007/BF02780608
更新日期:1993-04-01 00:00:00
abstract::Parkinson's disease (PD) is caused by the degeneration of dopaminergic neurons of substantia nigra projecting to striatum. The cause of idiopathic PD is obscure, and most cases are sporadic. It is widely accepted that there is a genetic component of the disease, and the earlier the age of onset, the greater the likeli...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1385/MN:29:1:15
更新日期:2004-02-01 00:00:00
abstract::Quite a number of studies have examined the effects of fish oil supplementation on cognitive performance in different transgenic animal models of Alzheimer's disease (AD). However, inconsistent and controversial outcomes have been derived from these experiments. In order to investigate whether the beneficial effect of...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-018-1060-6
更新日期:2018-12-01 00:00:00
abstract::Clinical studies demonstrated a positive correlation between hypertension and cognitive decline. Beneficial effects of angiotensin II receptor blockers on cognitive functions have also been reported earlier; however, its role in chronic neuroinflammation-induced memory impairment in the hypertensive state is not well ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-017-0450-5
更新日期:2018-02-01 00:00:00
abstract::Thyroid hormone plays an important role in central nervous system (CNS) development, including the myelination of variable axonal calibers. It is well-established that thyroid hormone is required for the terminal differentiation of oligodendrocyte precursor cells (OPCs) into myelinating oligodendrocytes by inducing ra...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1007/s12035-016-0013-1
更新日期:2016-11-01 00:00:00
abstract::Although the use, and misuse, of methylphenidate is increasing in childhood and adolescence, there is little information about the consequences of this psychostimulant chronic use on brain and behavior during development. The aim of the present study was to investigate hippocampus biochemical, histochemical, and behav...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-016-9987-y
更新日期:2017-08-01 00:00:00
abstract::Males are predominantly affected by autism spectrum disorders (ASD) with a prevalence ratio of 5:1. However, the underlying pathological mechanisms governing the male preponderance of ASD remain unclear. Recent studies suggested that epigenetic aberrations may cause synaptic dysfunctions, which might be related to the...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-014-8987-z
更新日期:2016-01-01 00:00:00
abstract::Classical galactosemia is an inborn error of carbohydrate metabolism in which patients accumulate high concentration of galactose in the brain. The most common treatment is a galactose-restricted diet. However, even treated patients develop several complications. One of the most common symptoms is motor coordination i...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-016-9981-4
更新日期:2017-08-01 00:00:00
abstract::Accumulating evidences indicate that endogenous modulators of excitatory synapses in the mammalian brain are potential targets for treating neuropsychiatric disorders. Indeed, glutamatergic and adenosinergic neurotransmissions were recently highlighted as potential targets for developing innovative anxiolytic drugs. A...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-015-9660-x
更新日期:2017-01-01 00:00:00
abstract::Hippocampus-dependent memories, such as social recognition (SRM), are modulated by neurogenesis. However, the precise role of newborn neurons in social memory processing is still unknown. We showed previously that 1 week of enriched environment (EE) is sufficient to increase neurogenesis in the hippocampus (HIP) and t...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-016-9922-2
更新日期:2017-07-01 00:00:00
abstract::In the field of the neurobiology of learning, significant emphasis has been placed on understanding neural plasticity within a single structure (or synapse type) as it relates to a particular type of learning mediated by a particular brain area. To appreciate fully the breadth of the plasticity responsible for complex...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1385/MN:21:1-2:057
更新日期:2000-02-01 00:00:00
abstract::The molecular mechanisms underlying cognitive impairment in Alzheimer's disease (AD) remain largely unclear. In the present study, we were aimed to identify the potential key molecules involved in spatial memory impairment in a triple transgenic (3xTg-AD) mouse model of AD. By employing two-dimensional fluorescence di...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-016-9959-2
更新日期:2017-07-01 00:00:00
abstract::The complications caused by overweight, obesity and type 2 diabetes are one of the main problems that increase morbidity and mortality in developed countries. Hypothalamic metabolic sensors play an important role in the control of feeding and energy homeostasis. PAS kinase (PASK) is a nutrient sensor proposed as a reg...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-013-8630-4
更新日期:2014-10-01 00:00:00
abstract::People suffering from Huntington's disease (HD) present cognitive deficits. Hippocampal dysfunction has been involved in the HD learning and memory impairment, but proteins leading this dysregulation are not fully characterized. Here, we studied the contribution of the family of transcription factors myocyte enhancer ...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-020-02041-x
更新日期:2020-11-01 00:00:00
abstract::Epidemiological, population-based case-control, and experimental studies at the molecular, cellular, and organism levels revealed that exposure to various environmental agents, including a number of structurally different agrochemicals, may contribute to the pathogenesis of Parkinson's disease (PD) and several other n...
journal_title:Molecular neurobiology
pub_type: 杂志文章,评审
doi:10.1007/s12035-012-8333-2
更新日期:2013-04-01 00:00:00
abstract::This study examined the effects of pinealectomy in Wistar rats and melatonin replacement therapy on the daily mRNA expression of melatonin (Tph1, Aanat, Asmt, Mt1, Mt2, and Rorα), and steroidogenic (Star, 17βhsd3, and Lhr) related genes as well as clock genes (Rev-erbα, Bmal1, Per1, Per2, Cry1, and Cry2) in testes. Th...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-019-1626-y
更新日期:2019-11-01 00:00:00
abstract::Hypoxia, the major cause of ischemic injury, leads to debilitating disease in infants via birth asphyxia and cerebral palsy, whereas in adults via heart attack and stroke. A widespread, natural protective phenomenon termed 'hypoxic preconditioning' (PH) occurs when prior exposures to hypoxia eventually result in robus...
journal_title:Molecular neurobiology
pub_type: 杂志文章
doi:10.1007/s12035-020-02091-1
更新日期:2020-12-01 00:00:00