Journal of chemical neuroanatomy最新文献

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Curcumin alleviates Alzheimer’s disease by inhibiting inflammatory response, oxidative stress and activating the AMPK pathway 姜黄素通过抑制炎症反应、氧化应激和激活AMPK通路来缓解阿尔茨海默病。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-11-19 DOI: 10.1016/j.jchemneu.2023.102363
Sen Shao , Xiaojun Ye , Wenwen Su , Yanbo Wang
{"title":"Curcumin alleviates Alzheimer’s disease by inhibiting inflammatory response, oxidative stress and activating the AMPK pathway","authors":"Sen Shao ,&nbsp;Xiaojun Ye ,&nbsp;Wenwen Su ,&nbsp;Yanbo Wang","doi":"10.1016/j.jchemneu.2023.102363","DOIUrl":"10.1016/j.jchemneu.2023.102363","url":null,"abstract":"<div><h3>Background</h3><p>Alzheimer’s disease (AD) is a common degenerative brain disorder with limited therapeutic options. Curcumin (Cur) exhibits neuroprotective function in many diseases. We aimed to explore the role and mechanism of Cur in AD.</p></div><div><h3>Materials and Methods</h3><p>Firstly, we established AD mice by injecting amyloid-β1–42 (Aβ1–42) solution into the hippocampus. Then, the AD mice received 150 mg/kg/d Cur for 10 consecutive days. The Morris water maze test was conducted to evaluate the cognitive function of the mice by hidden platform training and probe trials. To assess the spatial memory of the mice, spontaneous alternation behavior, the number of crossing the novel arm and the time spent in the novel arm during the Y-maze test was recorded. Hematoxylin and eosin (H&amp;E) staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNAL) assay were performed to assess the pathological damage and apoptosis of brain tissues. The number of damaged neurons was inspected by Nissl staining. Immunohistochemical staining was then performed to detect Aβ1–42 deposition. The levels of tumor necrosis factor-α (TNF-a), interleukin-6 (IL-6) and interleukin-1β (IL-1β) in serum and hippocampus, the contents of super oxide dismutase (SOD) and malondialdehyde (MDA) in brain tissues were assessed by enzyme-linked immunosorbent assay (ELISA). Additionally, B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax), RelA (p65) protein expressions and Adenosine 5′-monophosphate-activated protein kinase (AMPK) phosphorylation were tested using Western blot.</p></div><div><h3>Results</h3><p>Cur not only improved cognitive function and spatial memory, but also alleviated the pathological damage and apoptosis of brain tissues for AD mice. Meanwhile, upon Cur treatment, the number of damaged neurons in AD mice was decreased, the level of Aβ1–42 in AD mice was significantly decreased. Furthermore, the AD mice treated with Cur exhibited lower TNF-a, IL-6, IL-1β and MDA levels and a higher SOD content. Besides, Cur also downregulated p65 expression and upregulated AMPK phosphorylation.</p></div><div><h3>Conclusion</h3><p>Cur may improve AD via suppressing the inflammatory response, oxidative stress and activating the AMPK pathway, suggesting that Cur may be a potential drug for AD.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102363"},"PeriodicalIF":2.8,"publicationDate":"2023-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0891061823001333/pdfft?md5=54be5f7e55ab000e0e8c4c6610a692c0&pid=1-s2.0-S0891061823001333-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138291072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatiotemporal expression patterns of ZBP1 in the brain of mouse experimental stroke model 小鼠实验性脑卒中模型中ZBP1的时空表达规律
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-11-10 DOI: 10.1016/j.jchemneu.2023.102362
Tohru Mutoh , Hiroshi Kikuchi , Tatsuya Jitsuishi , Keiko Kitajo , Atsushi Yamaguchi
{"title":"Spatiotemporal expression patterns of ZBP1 in the brain of mouse experimental stroke model","authors":"Tohru Mutoh ,&nbsp;Hiroshi Kikuchi ,&nbsp;Tatsuya Jitsuishi ,&nbsp;Keiko Kitajo ,&nbsp;Atsushi Yamaguchi","doi":"10.1016/j.jchemneu.2023.102362","DOIUrl":"10.1016/j.jchemneu.2023.102362","url":null,"abstract":"<div><p><span>Z-DNA binding protein 1<span> (ZBP1) is a cytosolic nucleic acid sensor, functioning as a critical mediator of inflammation and cell death pathways. Since neuroinflammation could occur in response to damage-associated molecular patterns (DAMPs), ZBP1 might be involved in neuroinflammation after stroke. However, the spatiotemporal expression profile of ZBP1 in the post-stroke brain remains to be elucidated. The aim of this study is to demonstrate the spatiotemporal expression patterns of ZBP1 in the post-stroke brain using a mouse photothrombotic stroke model. Real-time PCR assays showed that </span></span><em>ZBP1</em><span><span> is induced on days 3–14 post stroke. ZBP1 immunoreactivity was observed in Iba1-positive microglia/macrophages in peri-infarct regions by </span>immunohistochemistry<span><span>. ZBP1-positive cells were spread in layers surrounding the infarct core by 7–14 days post stroke. Interestingly, ZBP1 immunoreactivity was also detected in CD206-positive border-associated macrophages (BAMs) in the meninges<span><span>. Furthermore, ZBP1-expressing cells were positive for antibodies against inflammatory mediators such as Toll-like receptor 4 (TLR4), Toll/IL-1R domain-containing adaptor-inducing IFN-β (TRIF), and receptor-interacting serine/threonine-protein kinase 1 (RIPK1). Morphological analysis with confocal microscopy showed that the co-localization signals of ZBP1 and its adaptor, </span>TRIF, are increased by </span></span>glucose oxidase (GOx) treatment, which has been reported to induce mitochondrial DNA (mtDNA) release. These results suggest that ZBP1 is induced in peri-infarct microglia/macrophages and may be involved in DAMPs-mediated neuroinflammation involving mtDNA in the post-infarct brain.</span></span></p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102362"},"PeriodicalIF":2.8,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89718467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synaptamide modulates glial and neurotransmitter activity in the spinal cord during neuropathic pain 突触酰胺在神经性疼痛过程中调节脊髓中的神经胶质和神经递质活性。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-11-05 DOI: 10.1016/j.jchemneu.2023.102361
Anna Starinets, Arina Ponomarenko, Anna Tyrtyshnaia, Igor Manzhulo
{"title":"Synaptamide modulates glial and neurotransmitter activity in the spinal cord during neuropathic pain","authors":"Anna Starinets,&nbsp;Arina Ponomarenko,&nbsp;Anna Tyrtyshnaia,&nbsp;Igor Manzhulo","doi":"10.1016/j.jchemneu.2023.102361","DOIUrl":"10.1016/j.jchemneu.2023.102361","url":null,"abstract":"<div><p>N-docosahexaenoylethanolamine, or synaptamide, is an endogenous metabolite of docosahexaenoic acid that is known for synaptogenic and neurogenic effects. In our previous studies we have shown that synaptamide attenuates neuropathic pain, facilitates remyelination, and reduces neuroinflammation after the chronic constriction injury (CCI) of the sciatic nerve in rats. In the current study, we show that daily synaptamide administration (4 mg/kg/day) within 14 days post-surgery: (1) decreases micro- and astroglia activity in the dorsal and ventral horns of the lumbar spinal cord; (2) modulates pro-inflammatory (IL1β, IL6) and anti-inflammatory (IL4, IL10) cytokine level in the serum and spinal cord; (3) leads to a rise in synaptamide and anandamide concentration in the spinal cord; (4) enhances IL10, CD206 and N-acylethanolamine-hydrolyzing acid amidase synthesis in macrophage cell culture following LPS-induced inflammation. Thus, the ability of synaptamide to modulate glial and cytokine activity indicates its potential for implementation in the treatment peripheral nerve injury.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102361"},"PeriodicalIF":2.8,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of royal jelly on acrylamide-induced neurotoxicity in rats 蜂王浆对丙烯酰胺致大鼠神经毒性的影响。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-11-02 DOI: 10.1016/j.jchemneu.2023.102358
Doaa S. Ibrahim , Eman M.S. Shahen
{"title":"Effect of royal jelly on acrylamide-induced neurotoxicity in rats","authors":"Doaa S. Ibrahim ,&nbsp;Eman M.S. Shahen","doi":"10.1016/j.jchemneu.2023.102358","DOIUrl":"10.1016/j.jchemneu.2023.102358","url":null,"abstract":"<div><p>Royal Jelly (RJ) is a natural product made by nurse bees known for its multiple therapeutic properties. The research aims to discover the ability of RJ to improve the hematological alterations and neurotoxicity caused by acrylamide (AA). The study rats were separated equally into four groups (6 in each group), the control group, the AA (38.27 mg/kg bw) group, the RJ (150 mg/kg bw) + AA group, and the RJ (300 mg/kg bw) + AA group. Blood and brain samples were collected after 10 days to evaluate haematological and biochemical parameters and to examine histopathological and immunohistochemistry. The administration of AA increased the level of malondialdehyde (MDA), decreases levels of haematological parameters, superoxide dismutase (SOD), reduced glutathione (GSH), brain-derived neurotrophic factor (BDNF), neurotransmitters (serotonin, dopamine, and acetylcholine), and cleaved caspase-3, as well as increase the damage to the brain tissues. Meanwhile, RJ improved levels of haematological parameters, oxidative stress parameters (MDA, SOD, and GSH), BDNF, neurotransmitters, cleaved caspase-3, and brain tissue damage induced by AA. The study demonstrated the protective impact of RJ against the haematological alterations and neurotoxicity caused by AA.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102358"},"PeriodicalIF":2.8,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71482026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lymphatic vessels accompanying dorsal and basal dural sinuses in the human brain 伴人脑脊膜窦背窦和基底窦的淋巴管
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-28 DOI: 10.1016/j.jchemneu.2023.102357
Safiye Çavdar , Büşra Köse , Damlasu Altınöz , Gizem Söyler , Ahmet Cingöz , İlke Ali Gürses , Mazhar Özkan , Hızır Aslıyüksek , Halit Çakır
{"title":"Lymphatic vessels accompanying dorsal and basal dural sinuses in the human brain","authors":"Safiye Çavdar ,&nbsp;Büşra Köse ,&nbsp;Damlasu Altınöz ,&nbsp;Gizem Söyler ,&nbsp;Ahmet Cingöz ,&nbsp;İlke Ali Gürses ,&nbsp;Mazhar Özkan ,&nbsp;Hızır Aslıyüksek ,&nbsp;Halit Çakır","doi":"10.1016/j.jchemneu.2023.102357","DOIUrl":"https://doi.org/10.1016/j.jchemneu.2023.102357","url":null,"abstract":"<div><p>Recent investigations showed the presence of meningeal lymphatic vessels (mLVs) along the superior sagittal and transverse dural sinuses which drain both fluid and immune cells from the cerebrospinal fluid (CSF) to the deep cervical lymph nodes. This study uses immunohistochemistry (IHC) and the Western Blot technique to show the presence of mLV accompanying the dorsal (superior sagittal, inferior sagittal, transverse, sigmoid, and straight) and basal (cavernous, sphenoparietal, superior, and inferior petrosal) dural sinuses in the human brain. Samples for IHC were obtained from dorsal and basal meningeal dural sinuses of 3 human cadavers and 3 autopsies. Routine histological techniques were carried out for the specimens. Podoplanin (PDPN, lymphatic vessel endothelial cell marker) and CD31 (vascular endothelial cell marker) IHC staining were applied to the 5 µm thick paraffin sections. Furthermore, PDPN and CD31 protein expressions were evaluated using Western Blot to the tissue samples from the same regions of 4 autopsies. Two consecutive sections from each sinus were PDPN, and CD31 was stained to differentiate blood vessels (BV) from mLV. The IHC staining showed the presence of mLVs accompanying both dorsal and basal dural sinuses. The mLVs accompanying the dorsal dural sinuses had a larger dimensions range compared to the basal dural sinuses. However, the number of mLVs along the basal dural sinuses was more than the mLVs along the dorsal ones. Further, fluid channels were closely localized to the mLV, with varying diameters and densities. Western Blotting technique showed the presence of PDPN expression in both dorsal and basal dural sinus samples. The knowledge of the presence of mLV along both dorsal and basal dural sinuses in humans can increase the understanding of how mLV contributes to the brain lymphatic circulation and may help understand the neuropathophysiological processes of various neurological diseases.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102357"},"PeriodicalIF":2.8,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91992431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suanzaoren decoction improves depressive-like behaviors by regulating the microbiota-gut-brain axis via inhibiting TLR4/NFκB/NLRP3 inflammation signal pathway 酸枣仁汤通过抑制TLR4/NFκB/NLRP3炎症信号通路调节微生物群肠脑轴,改善抑郁样行为。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-23 DOI: 10.1016/j.jchemneu.2023.102349
Yiyang Du, Bosai He, Bo Wu, Tingxu Yan, Ying Jia
{"title":"Suanzaoren decoction improves depressive-like behaviors by regulating the microbiota-gut-brain axis via inhibiting TLR4/NFκB/NLRP3 inflammation signal pathway","authors":"Yiyang Du,&nbsp;Bosai He,&nbsp;Bo Wu,&nbsp;Tingxu Yan,&nbsp;Ying Jia","doi":"10.1016/j.jchemneu.2023.102349","DOIUrl":"10.1016/j.jchemneu.2023.102349","url":null,"abstract":"<div><p><span><span><span>Depression is a common but serious sickness which causes a considerable burden on individuals and society. Recently, it has been well established that the occurrence of depression was related to the microbiota-gut-brain axis. The toll-like receptor 4 (TLR4)/ nuclear factor kappa-B kinase (NFκB)/ NOD-like receptor thermal protein domain associated </span>protein 3<span> (NLRP3) pathway is closely associated with the regulation of microbiota-gut-brain axis. Suanzaoren Decoction (SZRD), which recorded in Jin Gui Yao Lve in Han dynasty, has been used for treating insomnia and depression for a long time. However, the action mechanism of the depression regulation through the TLR4/NFκB/NLRP3 pathway by SZRD was still unclear. In this study, SZRD was firstly performed on a chronic unpredictable mild stress (CUMS) mice model. The results of behavioral tests showed that SZRD treatment could ameliorate the depressive-like behaviors of CUMS mice effectively. According to our previous researches about the components of SZRD in vitro and in vivo, the identification of serum metabolites in depression model rats was further analyzed qualitatively using ultra-performance liquid chromatography quadrupole time-of-flight </span></span>mass spectrometry<span><span>. 27 prototypes and 44 metabolites were identified. The main types of metabolic reactions are glucuronization, </span>sulfation, and so on. Then, using </span></span>immunohistochemistry<span><span><span> and western blotting to monitor the difference in activation of TLR4/NFκB/NLRP3 </span>signaling pathway<span> in mice brain and colon. The results showed that SZRD treatment could reduce expression levels of related factors. Additionally, the SZRD treatment could also inhibit the histopathological damage in the path morphology of the hippocampus and colon. The results of </span></span>16SrRNA demonstrated that SZRD could reduce the dysbiosis of the intestinal flora of depressive mice. The above results provided important information for studying the action mechanism of SZRD in treating depression by regulating microbiota-gut-brain axis via inhibiting TLR4/NFκB/NLRP3 pathway.</span></p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102349"},"PeriodicalIF":2.8,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An investigation of the endoplasmic reticulum stress in obesity exposure in the prenatal period 产前肥胖暴露中内质网应激的研究。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-17 DOI: 10.1016/j.jchemneu.2023.102348
Kıymet Kübra Tüfekci̇ , Musa Tatar , Funda Terzi̇ , Elfide Gizem Bakirhan
{"title":"An investigation of the endoplasmic reticulum stress in obesity exposure in the prenatal period","authors":"Kıymet Kübra Tüfekci̇ ,&nbsp;Musa Tatar ,&nbsp;Funda Terzi̇ ,&nbsp;Elfide Gizem Bakirhan","doi":"10.1016/j.jchemneu.2023.102348","DOIUrl":"10.1016/j.jchemneu.2023.102348","url":null,"abstract":"<div><h3>Objectives</h3><p>Exposure to maternal obesity has been shown to make offspring more prone to cognitive and metabolic disorders later in life. Although the underlying mechanisms are unclear, the role of endoplasmic reticulum (ER) stress in the fetal programming process is remarkable. ER stress can be activated by many chronic diseases, including obesity and diabetes. Therefore, our study aimed to investigate the role of ER stress caused by maternal diet-induced obesity in the offspring hippocampus. We also evaluated the protective effect of N-acetylcysteine (NAC) against ER stress.</p></div><div><h3>Methods</h3><p>A rat obesity model was created by providing a high-fat (60 % kcal) diet. N-acetylcysteine (NAC) was administered at a dosage of 150 mg/kg via the intragastric route. The animals were mated at the age of 12 weeks. The same diet was maintained during pregnancy and lactation. The experiment was terminated on the postnatal 28th day, and the offspring's brain tissues were examined. Immunohistochemical staining for ER stress markers was performed on sections taken from tissues after routine histological procedures.</p></div><div><h3>Results</h3><p><span>The results revealed increased GRP78<span>, PERK, and eIF2α immunoreactivities<span> in the hippocampal dentate gyrus (DG) and cornu ammonis 1 (CA1) regions in the obese group offspring, while the expression of those markers in those regions normalized with NAC supplementation (p &lt; 0.01). Statistical analysis of </span></span></span>XBP1 immunoreactivity H-scores revealed no difference between the study groups (p &gt; 0.05).</p></div><div><h3>Discussion</h3><p><span>These results suggest that exposure to obesity during the prenatal period may cause increased ER stress in hippocampal neurons, which have an important role in the regulation of learning, memory and </span>behavior, and this may contribute to decreased cognitive performance. On the other hand, NAC stands out as an effective agent that can counteract hippocampal ER stress.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102348"},"PeriodicalIF":2.8,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49677920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunoreactivity of glutamine synthetase in satellite glia around various subpopulations of lumbar dorsal root ganglia neurons in adult rats treated with monosodium glutamate 谷氨酸单钠处理成年大鼠腰背根神经节神经元不同亚群周围卫星神经胶质中谷氨酰胺合成酶的免疫反应性。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-13 DOI: 10.1016/j.jchemneu.2023.102347
Aleksandra Krawczyk, Sylwia Mozel, Karol Rycerz, Jadwiga Jaworska-Adamu, Marcin Bartłomiej Arciszewski
{"title":"Immunoreactivity of glutamine synthetase in satellite glia around various subpopulations of lumbar dorsal root ganglia neurons in adult rats treated with monosodium glutamate","authors":"Aleksandra Krawczyk,&nbsp;Sylwia Mozel,&nbsp;Karol Rycerz,&nbsp;Jadwiga Jaworska-Adamu,&nbsp;Marcin Bartłomiej Arciszewski","doi":"10.1016/j.jchemneu.2023.102347","DOIUrl":"10.1016/j.jchemneu.2023.102347","url":null,"abstract":"<div><p>Satellite glial cells (SGCs), involved inter alia in glutamate (Glu) metabolism, form a glial sheath around sensory neurons of dorsal root ganglia (DRGs). SGCs show a presence of glutamine synthetase (GS) which transform uptaken Glu into glutamine (Gln). In DRGs, this aminoacid is used mainly by small neurons which are able to synthetize substance P (SP) that play a crucial role in nociception. The aim of the study was to define the influence of monosodium glutamate (MSG) on GS immunoreactivity in satellite glia around various subpopulations of neurons including SP immunopositive cells in DRGs of adult rats. The studies were carried out on lumbar DRGs slides in rats which received subcutaneous injection of saline solution (control group) or 4 g/kg b. w. of MSG (MSG group). Immunofluorescence reactions were conducted with use of anti-GS and anti-SP antibodies. Administration of MSG to adult rats increased the GS immunoexpression in SGCs. In rats receiving MSG, a number of small neurons with GS-immunopositive glial sheath was not altered when compared to control individuals, whereas there was a statistically significant increase of GS immunoexpression in SGCs around large and medium neurons. Moreover, in these animals, a statistically significant increase in the number of small SP-positive neurons with GS-positive glial sheath was observed. SP is responsible for transmission of pain, thus the obtained results may be useful for further research concerning the roles of glia in nociceptive pathway regulation.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"134 ","pages":"Article 102347"},"PeriodicalIF":2.8,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41202161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ginsenoside Rg2 alleviates neurovascular damage in 3xTg-AD mice with Alzheimer's disease through the MAPK-ERK pathway 人参皂苷Rg2通过MAPK-ERK途径减轻患有阿尔茨海默病的3xTg AD小鼠的神经血管损伤。
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-05 DOI: 10.1016/j.jchemneu.2023.102346
Xiaojun Ye , Sen Shao , Yanbo Wang , Wenwen Su
{"title":"Ginsenoside Rg2 alleviates neurovascular damage in 3xTg-AD mice with Alzheimer's disease through the MAPK-ERK pathway","authors":"Xiaojun Ye ,&nbsp;Sen Shao ,&nbsp;Yanbo Wang ,&nbsp;Wenwen Su","doi":"10.1016/j.jchemneu.2023.102346","DOIUrl":"10.1016/j.jchemneu.2023.102346","url":null,"abstract":"<div><p>Alzheimer's disease (AD) is the most common form of dementia, and ginsenoside Rg2 (Rg2) is proven to inhibit AD’s progression. This study investigates the potential benefits of Rg2 treatment on 3xTg-AD mice. Following 6 weeks of gavage treatment, Rg2-treated 3xTg-AD mice exhibited improved spatial recognition memory behaviors, regional cerebral blood flow, and histopathological injury of the hippocampus, which were observed through a Y-maze test, laser Doppler flowmetry, and hematoxylin-eosin staining. Additionally, Rg2 treatment caused a decrease in the levels of amyloid beta 25–35, TNF-α, IL-1β, and IL-6, as measured by enzyme-linked immunosorbent assay, as well as a reduction in mRNA levels of IL-1β and IL-6 in 3xTg-AD mouse brains using quantitative real-time PCR. In particular, NeuN and CD31 levels were inhibited and GFAP level was elevated in 3xTg-AD mice that were observed through immunofluorescence, and these levels were all antagonized by Rg2, suggesting the effects of Rg2 on neurovascular damage, astrocyte activation, and neuronal loss. Furthermore, Western blot and qRT-PCR assays showed that Rg2 blocked the expression of ICAM-1 and VCAM-1 in 3xTg-AD mice. By Western blot, the ratios of p-ERK/ERK and p-MAPK/MAPK in 3xTg-AD mice were upregulated by Rg2 treatment, suggesting the neuroprotective effects of Rg2 may be related to the MAPK-ERK pathway. In summary, this study demonstrated the potential of Rg2 to improve AD and provided a scientific basis for research on the biological mechanism of AD and the development of Rg2.</p></div>","PeriodicalId":15324,"journal":{"name":"Journal of chemical neuroanatomy","volume":"133 ","pages":"Article 102346"},"PeriodicalIF":2.8,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41129926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aripiprazole attenuates the medial prefrontal cortex morphological and biochemical alterations in rats with neonatal ventral hippocampus lesion 阿立哌唑可减轻新生海马腹侧病变大鼠内侧前额叶皮层形态学和生化改变
IF 2.8 4区 医学
Journal of chemical neuroanatomy Pub Date : 2023-10-01 DOI: 10.1016/j.jchemneu.2023.102316
Gabriel D. Flores-Gómez , David Javier Apam-Castillejos , Ismael Juárez-Díaz , Estefania Fuentes-Medel , Alfonso Díaz , Hiram Tendilla-Beltrán , Gonzalo Flores
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引用次数: 1
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