scholarly journals Complement protein C5a enhances the β-amyloid-induced neuro-inflammatory response in microglia in Alzheimer’s disease

2018 ◽  
Vol 34 ◽  
pp. 116-120 ◽  
Author(s):  
Xiao-qun An ◽  
Wei Xi ◽  
Chen-yun Gu ◽  
Xiao Huang
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Inflammatory Response ◽  
Inflammatory Responses ◽  
Inflammatory Factors ◽  
Complement Protein ◽  
Neuroinflammatory Response ◽  
Stat3 Signaling ◽  
Tnf Α ◽  
Neuro Inflammation

Objective: The dysregulation of neuro-inflammation is one of the attributes of the pathogenesis of Alzheimer’s disease (AD). Over-expression of complement proteins co-localizes with neurofibrillary tangles, thereby indicating that a complement system may be involved in neuro-inflammation. Here, we report the influence of complement activation on the neuro-inflammation using a microglial cell line. Methods: first, we performed a cytotoxic assay using the microglial cells BV-2. Second, after treatment of BV-2 cells with Aβ42 and/ or C5a, the anaphylatoxin derived from C5, we determined the expression levels of the pro-inflammatory factors TNF-α, IL-1β, and IL-6. Finally, we explored whether this neuroinflammatory response was mediated by JAK/ STAT3 signaling. Results: C5a had an enhanced effect on the neural cell viability of BV-2 cells treated with Aβ42. In addition, C5a also increased the Aβ-induced neuro-inflammatory response, and these effects were blocked by the C5aR antagonist, PMX205. Finally, we demonstrated that the neuro-inflammatory responses induced by Aβ and C5a were mediated through JAK/STAT3 signaling. By blocking this pathway with an antagonist, AG490, the expression of TNF-α, IL-1β, and IL-6 was alleviated. Conclusion: The complement protein C5a could exaggerate the Aβ-induced neuroinflammatory response in microglia, and C5aR may be a potential therapeutic tool for AD treatment.

Comparing the effect of intestinal bacteria from rabbit, pig, and chicken on inflammatory response in cultured rabbit crypt and villus

2019 ◽  
Vol 65 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Hong Xiao Cui ◽  
Xiu Rong Xu
Keyword(s):  
Inflammatory Response ◽  
Inflammatory Responses ◽  
Intestinal Bacteria ◽  
Inflammatory Factors ◽  
Rabbit Ileum ◽  
Necrosis Factor Alpha ◽  
Heat Treated ◽  
Tnf Α ◽  
Factor Alpha ◽  
Anti Inflammatory

Rabbit is susceptible to intestinal infection, which often results in severe inflammatory response. To investigate whether the special community structure of rabbit intestinal bacteria contributes to this susceptibility, we compared the inflammatory responses of isolated rabbit crypt and villus to heat-treated total bacteria in pig, chicken, and rabbit ileal contents. The dominant phylum in pig and chicken ileum was Firmicutes, while Bacteroidetes was dominant in rabbit ileum. The intestinal bacteria from rabbit induced higher expression of toll-like receptor 4 (TLR4) in rabbit crypt and villus (P < 0.05). TLR2 and TLR3 expression was obviously stimulated by chicken and pig intestinal bacteria (P < 0.05) but not by those of rabbit. The ileal bacteria from those three animals all increased the expression of tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) in crypts and villus (P < 0.05). Chicken and pig ileal bacteria also stimulated the expression of anti-inflammatory factors interferon beta (IFN-β) and IL-10 (P < 0.05), while those of rabbit did not (P > 0.05). In conclusion, a higher abundance of Gram-negative bacteria in rabbit ileum did not lead to more expressive pro-inflammatory cytokines in isolated rabbit crypt and villus, but a higher percentage of Lactobacillus in chicken ileum might result in more expressive anti-inflammatory factors.

scholarly journals The Neuroprotective Effect of Byu d Mar 25 in LPS-Induced Alzheimer's Disease Mice Model

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Lan Liu ◽  
Yongcang Zhang ◽  
Liang Tang ◽  
Hua Zhong ◽  
Dunzhu Danzeng ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Neuronal Damage ◽  
Neuroprotective Effect ◽  
Inflammatory Factors ◽  
Morris Water Maze Test ◽  
Spatial Learning And Memory ◽  
Expression Levels ◽  
Caspase 1 ◽  
Tnf Α

Inflammatory factors play an important role in the pathogenesis of Alzheimer’s disease (AD). Byu d Mar 25 (BM25) has been suggested to have protective effects in the central nervous system. However, the effect of BM25 on AD has not been determined. This study aims to investigate the neuroprotective effect of BM25 in AD. A total of 40 AD model mice were randomly assigned to the following five groups (n = 8 per group): the AD + NS group, the AD + donepezil group, and three AD + BM25 groups treated with either 58.39 mg/kg (AD + BM25-L), 116.77 mg/kg (AD + BM25-M), or 233.54 mg/kg BM25 (AD + BM25-H). The Morris water maze test was performed to assess alterations in spatial learning and memory deficits. Nissl staining was performed to detect Nissl bodies and neuronal damage. The expression of IL-1β and TNF-α was evaluated by ELISA. The protein expression of P-P38, P38, P-IκBα, caspase 1, COX2, and iNOS was determined by western blotting. The expression of Aβ, p-Tau, and CD11b was measured by immunohistochemistry. The mRNA expression levels of IL-1β, TNF-α, COX2, and iNOS were measured by qRT-PCR. Spatial memory significantly improved in the AD + BM25-M and AD + BM25-H groups compared with the AD + NS group ( p < 0.05 ). The expression of Aβ and p-Tau significantly decreased in the AD + BM25-M and AD + BM25-H groups ( p < 0.05 ). The neuron density and hierarchy and number of pyramidal neurons significantly increased in the AD + BM25-M and AD + BM25-H groups ( p < 0.05 ). In addition, the expression levels of CD11b, IL-1β, TNF-α, COX2, iNOS, caspase 1, p-IκBα, and p-P38 significantly decreased in the AD + BM25-M and AD + BM25-H groups ( p < 0.05 ). In conclusion, our findings suggest that BM25 may exert anti-inflammatory and neuroprotective effects in AD model mice by suppressing the activity of microglia and inhibiting the phosphorylation of IκBα and p38 MAPK.

scholarly journals Electroacupuncture Improves M2 Microglia Polarization and Glia Anti-inflammation of Hippocampus in Alzheimer’s Disease

2021 ◽  
Vol 15 ◽  
Author(s):  
Lushuang Xie ◽  
Yi Liu ◽  
Ning Zhang ◽  
Chenyu Li ◽  
Aaron F. Sandhu ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Inflammatory Response ◽  
Inflammatory Cytokines ◽  
Inflammatory Cytokine ◽  
Cytokine Expression ◽  
Tnf Α ◽  
Microglia Polarization ◽  
Anti Inflammatory ◽  
Pro Inflammatory Cytokines

Background: Alzheimer’s disease (AD) is a neurodegenerative disease characterized by loss of recognition and memory. Neuroinflammation plays pivotal roles in the pathology of AD and affects the progression of the disease. Astrocyte and microglia, as main immune executors in the central nervous system (CNS), participate into the inflammatory response in AD. Glia polarize into different phenotypes during neurodegeneration. Pro-inflammatory glia produce cytokines (IL-1β, TNF-α, and IL-6) resulting into debris aggregates and neurotoxicity. Anti-inflammatory phenotypes produce cytokines (IL-4 and IL-10) to release the inflammation. Electroacupuncture is a useful treatment that has been found to slow the neurodegeneration in animals through experimentation and in humans through clinical trials. The aim of this study was to uncover the mechanisms of glia activation, microglia polarization, and cytokine secretion regulated by electroacupuncture as a treatment for AD.Methods: Twenty male Sprague–Dawley (SD) rats were randomly divided into four groups: Control group (Control), Normal saline group (NS), AD group (AD), and Electroacupuncture group (Acupuncture). The AD and Acupuncture groups were bilaterally injected with Aβ1–42 into the CA1 field of the hippocampus. The Acupuncture group received electroacupuncture stimulation on the acupoint “Baihui” (GV20) for 6 days per week for a total of 3 weeks. The Morris Water Maze (MWM) was used to evaluate learning and memory capacity. Immunofluorescence was used to stain GFAP and Iba1 of the DG and CA1 in the hippocampus, which, respectively, expressed the activation of astrocyte and microglia. The M1 microglia marker, inducible nitric oxide synthase (iNOS), and M2 marker Arginase 1 (Arg1) were used to analyze the polarization of microglia. The pro-inflammatory cytokines (IL-1β, TNF-α, and IL-6), anti-inflammatory cytokines (IL-4 and IL-10), and pathway-molecules (p65 and Stat6) were tested to analyze the glia inflammatory response by immunofluorescence and polymerase chain reaction (PCR).Results: The MWM results showed that electroacupuncture improves the escape latency time and the swimming distance of AD rats. The number of GFAP and Iba1 cells significantly increased in AD rats, but electroacupuncture decreased the cells. The iNOS-positive cells were significantly increased in AD, and electroacupuncture decreased the positive cells. Electroacupuncture elevated Arg1-positive cells in AD rats. Electroacupuncture decreased the glia pro-inflammatory cytokine expression and increased the anti-inflammatory cytokine expression in AD rats. Furthermore, electroacupuncture inhibited the NF-κB pathway molecule (p65) while raising the Stat6 pathway molecule (Stat6).Conclusion: These results provide evidence that electroacupuncture improves the recognition abilities and memory of AD rats. Electroacupuncture inhibits the activation of glia and polarizes microglia toward the M2 phenotype. Electroacupuncture decreased the pro-inflammatory cytokines (IL-1β, TNF-α, and IL-6) and increased the anti-inflammatory cytokines (IL-4 and IL-10). Furthermore, electroacupuncture affects the immune responses through inhibition of NF-κB pathway but activation of Stat6 pathway.

Thymoquinone alleviates the experimentally induced Alzheimer’s disease inflammation by modulation of TLRs signaling

2018 ◽  
Vol 37 (10) ◽  
pp. 1092-1104 ◽  
Author(s):  
YS Abulfadl ◽  
NN El-Maraghy ◽  
AA Eissa Ahmed ◽  
S Nofal ◽  
Y Abdel-Mottaleb ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Inflammatory Responses ◽  
Nigella Sativa ◽  
Interleukin 1 ◽  
Amyloid Β ◽  
Active Constituent ◽  
Necrosis Factor Alpha ◽  
Tnf Α ◽  
Anti Inflammatory

Alzheimer’s disease (AD) is characterized by a robust inflammatory response elicited by the accumulation and deposition of amyloid-β (Aβ) within the brain. Aβ induces detrimental inflammatory responses through toll-like receptors (TLRs) signaling pathway. Thymoquinone (TQ), the main active constituent of Nigella sativa oil, has been reported by several previous studies for its potent anti-inflammatory effect. The aim of this study is to elucidate the effect of TQ in improving learning and memory, using a rat model of AD induced by a combination of aluminum chloride (AlCl3) and d-galactose (d-Gal). TQ was administered orally at doses of 10, 20, and 40 mg/kg/day for 14 days after AD induction. Memory functions were assessed using the step through passive avoidance test. Amyloid plaques were shown to be present using hematoxylin and eosin staining. Tumor necrosis factor-alpha (TNF-α) and Interleukin-1beta (IL-1β) levels in brain were assessed via ELISA and profiling TLR-2, TLR-4, myeloid differential factor 88, toll–interleukin-1 receptor domain-containing adapter-inducing interferon-β, interferon regulatory factor 3 (IRF-3), and nuclear factor-κB (NF-κB) expressions via real-time polymerase chain reaction. TQ improved AD rat cognitive decline, decreased Aβ formation and accumulation, significantly decreased TNF-α and IL-1β at all levels of doses and significantly downregulated the expression of TLRs pathway components as well as their downstream effectors NF-κB and IRF-3 mRNAs at all levels of doses ( p < 0.05). We concluded that TQ reduced the inflammation induced by d-Gal/AlCl3 combination. It is therefore reasonable to assign the anti-inflammatory responses to the modulation of TLRs pathway.

scholarly journals Treatment with Bifidobacteria can suppress Aβ accumulation and neuroinflammation in APP/PS1 mice

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10262
Author(s):  
Qiong Wu ◽  
Qifa Li ◽  
Xuan Zhang ◽  
Michael Ntim ◽  
Xuefei Wu ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Microglial Activation ◽  
Amyloid Β ◽  
The Elderly ◽  
Inflammatory Factors ◽  
Complex Disorder ◽  
Tnf Α ◽  
The Brain ◽  
Excessive Accumulation

Background Alzheimer’s disease (AD), being a complex disorder, is affected either by genetic or environmental factors or both. It is observed that there is an excessive accumulation of amyloid β (Aβ) in the extracellular space of the brain. AD is the first neurodegenerative disease in the elderly, and so far there is no effective treatment. In recent years, many studies have reported that Alzheimer’s disease has a relationship with gut microflora, indicating that regulating gut microbiota could offer therapeutic intervention for AD. This study explored the effect Bifidobacteria has in averting AD. Methods WT and APP/PS1 mice were used for the experiments. The mice were randomly assigned to four groups: WT group, WT + Bi group, AD group (APP/PS1 mouse) and AD + Bi group (Bifidobacteria-treated APP/PS1 mouse). Treatment with Bifidobacteria lasted for 6 months and mice were prepared for immunohistochemistry, immunofluorescence, Thioflavin S staining, Western blotting, PCR and Elisa quantitative assay. Results The results show that after 6 months of treatment with Bifidobacteria signiis to be lesficantly reduces Aβ deposition in cortex and hippocampus of AD mice. The level of insoluble Aβ in the hippocampus and cortex of AD+Bi mice was decreased compared with AD mice. Meanwhile, a significant decrease in the level of soluble Aβ in the cortex of AD+Bi mice but not in the hippocampus was observed. The activation of microglia and the release of inflammatory factors were also determined in this study. From the results, Bifidobacteria inhibited microglial activation and reduced IL-1β, TNF-α, IL-4, IL-6 and INF-γ release. Altogether, these results implied that Bifidobacteria can alleviate the pathological changes of AD through various effects.

The Association between TNF-alpha, IL-1 alpha and IL-10 with Alzheimer's Disease

2020 ◽  
Vol 17 ◽  
Author(s):  
Marija Culjak ◽  
Matea Nikolac Perkovic ◽  
Suzana Uzun ◽  
Dubravka Svob Strac ◽  
Gordana Nedic Erjavec ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Tnf Alpha ◽  
Similar Distribution ◽  
Serum Concentrations ◽  
Sporadic Alzheimer’S Disease ◽  
Neuroinflammatory Response ◽  
Tnf Α

Background: Sporadic Alzheimer’s Disease (AD) is assumed to be associated with different biological/genetic vulnerability, as well as with neuroinflammation, mediated by cytokines. The present study evaluated the role of cytokines in AD. Objective: Aim was to determine the possible association of TNF-α (rs1800629), IL1-α (rs1800587) and IL-10 (rs1800896) polymorphisms with AD, and to assess serum TNF-α, IL-1α and IL-10 concentrations in patients with AD and in subjects with mild cognitive impairment (MCI). Method: The study included 645 Caucasian participants: 395 subjects with AD and 250 subjects with MCI. Genotyping was performed using real time PCR in all 645 subjects, while serum concentrations of TNF-α, IL-1α and IL-10 and were determined using ELISA in 174 subjects. Results: The frequency of the TNF-ɑ rs1800629, IL1-ɑ rs1800587 or IL-10 rs1800896 genotypes did not differ significantly between patients with AD and MCI. Serum concentration of IL-1α and IL-10 were significantly decreased, while the concentration of TNF-α was significantly higher in patients with AD than in MCI subjects. TNF-α, IL1-α or IL-10 concentrations were similar in subjects with AD or MCI subdivided into carriers of the corresponding TNF-ɑ rs1800629, IL1-ɑ rs1800587 or IL-10 rs1800896 genotypes. Conclusions: Similar distribution of the IL1-ɑ rs1800587, TNF-ɑ rs1800629 or IL-10 rs1800896 genotypes in subjects with AD and MCI failed to confirm that these specific risk genotypes are associated with vulnerability to develop AD. Alteration in IL-1α, IL-10 and TNF-α concentrations in patients with AD partially confirmed the association with neuroinflammatory response in AD.

scholarly journals Crosstalk between Gut and Brain in Alzheimer’s Disease: The Role of Gut Microbiota Modulation Strategies

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 690
Author(s):  
Umair Shabbir ◽  
Muhammad Sajid Arshad ◽  
Aysha Sameen ◽  
Deog-Hwan Oh
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Gut Microbiota ◽  
Dietary Habits ◽  
Inflammatory Responses ◽  
Fecal Microbiota Transplantation ◽  
Fecal Microbiota ◽  
Gut Dysbiosis ◽  
Dynamic Population

The gut microbiota (GM) represents a diverse and dynamic population of microorganisms and about 100 trillion symbiotic microbial cells that dwell in the gastrointestinal tract. Studies suggest that the GM can influence the health of the host, and several factors can modify the GM composition, such as diet, drug intake, lifestyle, and geographical locations. Gut dysbiosis can affect brain immune homeostasis through the microbiota–gut–brain axis and can play a key role in the pathogenesis of neurodegenerative diseases, including dementia and Alzheimer’s disease (AD). The relationship between gut dysbiosis and AD is still elusive, but emerging evidence suggests that it can enhance the secretion of lipopolysaccharides and amyloids that may disturb intestinal permeability and the blood–brain barrier. In addition, it can promote the hallmarks of AD, such as oxidative stress, neuroinflammation, amyloid-beta formation, insulin resistance, and ultimately the causation of neural death. Poor dietary habits and aging, along with inflammatory responses due to dysbiosis, may contribute to the pathogenesis of AD. Thus, GM modulation through diet, probiotics, or fecal microbiota transplantation could represent potential therapeutics in AD. In this review, we discuss the role of GM dysbiosis in AD and potential therapeutic strategies to modulate GM in AD.

scholarly journals NLRP3 Inflammasome: A Starring Role in Amyloid-β- and Tau-Driven Pathological Events in Alzheimer’s Disease

2021 ◽  
pp. 1-22
Author(s):  
Mariana Van Zeller ◽  
Diogo M. Dias ◽  
Ana M. Sebastião ◽  
Cláudia A. Valente
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Glial Cells ◽  
Neurofibrillary Tangles ◽  
Nlrp3 Inflammasome ◽  
Neuronal Death ◽  
Inflammatory Responses ◽  
Senile Plaques ◽  
Amyloid Β ◽  
Wide Range

Alzheimer’s disease (AD) is the most prevalent neurodegenerative disease commonly diagnosed among the elderly population. AD is characterized by the loss of synaptic connections, neuronal death, and progressive cognitive impairment, attributed to the extracellular accumulation of senile plaques, composed by insoluble aggregates of amyloid-β (Aβ) peptides, and to the intraneuronal formation of neurofibrillary tangles shaped by hyperphosphorylated filaments of the microtubule-associated protein tau. However, evidence showed that chronic inflammatory responses, with long-lasting exacerbated release of proinflammatory cytokines by reactive glial cells, contribute to the pathophysiology of the disease. NLRP3 inflammasome (NLRP3), a cytosolic multiprotein complex sensor of a wide range of stimuli, was implicated in multiple neurological diseases, including AD. Herein, we review the most recent findings regarding the involvement of NLRP3 in the pathogenesis of AD. We address the mechanisms of NLRP3 priming and activation in glial cells by Aβ species and the potential role of neurofibrillary tangles and extracellular vesicles in disease progression. Neuronal death by NLRP3-mediated pyroptosis, driven by the interneuronal tau propagation, is also discussed. We present considerable evidence to claim that NLRP3 inhibition, is undoubtfully a potential therapeutic strategy for AD.

scholarly journals Metabolic Profiling of Suprachiasmatic Nucleus Reveals Multifaceted Effects in an Alzheimer’s Disease Mouse Model

2021 ◽  
pp. 1-12
Author(s):  
Muhamed N.H. Eeza ◽  
Rico Singer ◽  
Corinna Höfling ◽  
Jörg Matysik ◽  
Huub J.M. de Groot ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Mouse Model ◽  
Metabolic Profiling ◽  
Inflammatory Responses ◽  
Immunohistochemical Analysis ◽  
Magic Angle Spinning ◽  
Tg2576 Mouse ◽  
Magic Angle ◽  
Gaba Production

Background: Circadian rhythm disturbance is commonly observed in Alzheimer’s disease (AD). In mammals, these rhythms are orchestrated by the superchiasmatic nucleus (SCN). Our previous study in the Tg2576 AD mouse model suggests that inflammatory responses, most likely manifested by low GABA production, may be one of the underlying perpetrators for the changes in circadian rhythmicity and sleep disturbance in AD. However, the mechanistic connections between SCN dysfunction, GABA modulation, and inflammation in AD is not fully understood. Objective: To reveal influences of amyloid pathology in Tg2576 mouse brain on metabolism in SCN and to identify key metabolic sensors that couple SCN dysfunction with GABA modulation and inflammation. Methods: High resolution magic angle spinning (HR-MAS) NMR in conjunction with multivariate analysis was applied for metabolic profiling in SCN of control and Tg2576 female mice. Immunohistochemical analysis was used to detect neurons, astrocytes, expression of GABA transporter 1 (GAT1) and Bmal1. Results: Metabolic profiling revealed significant metabolic deficits in SCN of Tg2576 mice. Reductions in glucose, glutamate, GABA, and glutamine provide hints toward an impaired GABAergic glucose oxidation and neurotransmitter cycling in SCN of AD mice. In addition, decreased redox co-factor NADPH and glutathione support a redox disbalance. Immunohistochemical examinations showed low expression of the core clock gene, Bmal1, especially in activated astrocytes. Moreover, decreased expression of GAT1 in astrocytes indicates low GABA recycling in this cell type. Conclusion: Our results suggest that redox disbalance and compromised GABA signaling are important denominators and connectors between neuroinflammation and clock dysfunction in AD.

scholarly journals Astrocytes and neuroinflammation in Alzheimer's disease

2014 ◽  
Vol 42 (5) ◽  
pp. 1321-1325 ◽  
Author(s):  
Emma C. Phillips ◽  
Cara L. Croft ◽  
Ksenia Kurbatskaya ◽  
Michael J. O’Neill ◽  
Michael L. Hutton ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Inflammatory Responses ◽  
Amyloid Β ◽  
Synaptic Dysfunction ◽  
Amyloid Β Peptide ◽  
Substantial Evidence ◽  
Models Of Disease ◽  
Opposing Effects

Increased production of amyloid β-peptide (Aβ) and altered processing of tau in Alzheimer's disease (AD) are associated with synaptic dysfunction, neuronal death and cognitive and behavioural deficits. Neuroinflammation is also a prominent feature of AD brain and considerable evidence indicates that inflammatory events play a significant role in modulating the progression of AD. The role of microglia in AD inflammation has long been acknowledged. Substantial evidence now demonstrates that astrocyte-mediated inflammatory responses also influence pathology development, synapse health and neurodegeneration in AD. Several anti-inflammatory therapies targeting astrocytes show significant benefit in models of disease, particularly with respect to tau-associated neurodegeneration. However, the effectiveness of these approaches is complex, since modulating inflammatory pathways often has opposing effects on the development of tau and amyloid pathology, and is dependent on the precise phenotype and activities of astrocytes in different cellular environments. An increased understanding of interactions between astrocytes and neurons under different conditions is required for the development of safe and effective astrocyte-based therapies for AD and related neurodegenerative diseases.

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