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https://www.readbyqxmd.com/read/28624505/deficiency-in-ep4-receptor-associated-protein-ameliorates-abnormal-anxiety-like-behavior-and-brain-inflammation-in-a-mouse-model-of-alzheimer-disease
#1
Risako Fujikawa, Sei Higuchi, Masato Nakatsuji, Mika Yasui, Taichi Ikedo, Manabu Nagata, Kosuke Hayashi, Masayuki Yokode, Manabu Minami
Microglia are thought to play key roles in the progression of Alzheimer disease (AD). Overactivated microglia produce proinflammatory cytokines, such as tumor necrosis factor-α, which appear to contribute to disease progression. Previously, we reported that prostaglandin E2 type 4 receptor-associated protein (EPRAP) promotes microglial activation. We crossed human amyloid precursor protein transgenic mice from strain J20(+/-) onto an EPRAP-deficient background to determine the role of EPRAP in AD. Behavioral tests were performed in 5-month-old male J20(+/-)EPRAP(+/+) and J20(+/-)EPRAP(-/-) mice...
June 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28614179/molecular-hydrogen-inhalation-attenuates-postoperative-cognitive-impairment-in-rats
#2
Yuchang Xin, Huiying Liu, Peng Zhang, Liuhui Chang, Keliang Xie
Postoperative cognitive decline is a major clinical problem with high morbidity and mortality after surgery. Many studies have found that molecular hydrogen (H2) has significant neuroprotection against acute and chronic neurological injury by regulating inflammation and apoptosis. In this study, we hypothesized that H2 treatment could ameliorate the development of cognitive impairment following surgery. Adult male rats were subjected to stabilized tibial fracture operation under anesthesia. Two percent of H2 was inhaled for 3 h beginning at 1 h after surgery...
June 13, 2017: Neuroreport
https://www.readbyqxmd.com/read/28612842/gastrointestinal-inflammation-by-gut-microbiota-disturbance-induces-memory-impairment-in-mice
#3
S-E Jang, S-M Lim, J-J Jeong, H-M Jang, H-J Lee, M J Han, D-H Kim
In this study, we tested our hypothesis regarding mechanistic cross-talk between gastrointestinal inflammation and memory loss in a mouse model. Intrarectal injection of the colitis inducer 2,4,6-trinitrobenzenesulfonic acid (TNBS) in mice caused colitis via activation of nuclear factor (NF)-κB and increase in membrane permeability. TNBS treatment increased fecal and blood levels of lipopolysaccharide (LPS) and the number of Enterobacteriaceae, particularly Escherichia coli (EC), in the gut microbiota composition, but significantly reduced the number of Lactobacillus johnsonii (LJ)...
June 14, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28583427/cyclooxygenase-2-inhibitors-differentially-attenuate-pentylenetetrazol-induced-seizures-and-increase-of-pro-and-anti-inflammatory-cytokine-levels-in-the-cerebral-cortex-and-hippocampus-of-mice
#4
Fernanda Rossatto Temp, Joseane Righes Marafiga, Laura Hautrive Milanesi, Thiago Duarte, Leonardo Magno Rambo, Micheli Mainardi Pillat, Carlos Fernando Mello
Seizures increase prostaglandin and cytokine levels in the brain. However, it remains to be determined whether cyclooxygenase-2 (COX-2) derived metabolites play a role in seizure-induced cytokine increase in the brain and whether anticonvulsant activity is shared by all COX-2 inhibitors. In this study we investigated whether three different COX-2 inhibitors alter pentylenetetrazol (PTZ)-induced seizures and increase of interleukin-1β (IL-1β), interleukin-6 (IL-6), interferon-γ (INF-γ), tumor necrosis factor-α (TNF-α) and interleukin-10 (IL-10) levels in the hippocampus and cerebral cortex of mice...
June 3, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28582770/the-protective-effect-of-epimedii-folium-and-curculiginis-rhizoma-on-alzheimer-s-disease-by-the-inhibitions-of-nf-%C3%AE%C2%BAb-mapk-pathway-and-nlrp3-inflammasome
#5
Zhou Lan, Guangjing Xie, Meng Wei, Ping Wang, Lvyi Chen
The purpose of the current study was to explore the effects of the water extracts of Epimedii Folium and Curculiginis Rhizoma (EX) on Aβ-induced Alzheimer's disease. Aβ1-42 was stereotaxically injected bilaterally into the dorsal hippocampus, and then the rats were orally received EX at the doses of 2 g/kg and 6 g/kg for 30 days. Behavior was monitored through Morris water maze test. The neuroprotective effect of EX were examined with methods of histochemistry and biochemistry. EX reduced the contents of pro-inflammatory cytokines tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and interleukin-6 (IL-6) in hippocampus and cortex...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28580377/optimization-of-curvilinear-needle-trajectories-for-transforamenal-hippocampotomy
#6
David B Comber, E Bryn Pitt, Hunter B Gilbert, Matthew W Powelson, Emily Matijevich, Joseph S Neimat, Robert J Webster, Eric J Barth
BACKGROUND: The recent development of MRI-guided laser-induced thermal therapy (LITT) offers a minimally invasive alternative to craniotomies performed for tumor resection or for amygdalohippocampectomy to control seizure disorders. Current LITT therapies rely on linear stereotactic trajectories that mandate twist-drill entry into the skull and potentially long approaches traversing healthy brain. The use of robotically-driven, telescoping, curved needles has the potential to reduce procedure invasiveness by tailoring trajectories to the curved shape of the ablated structure and by enabling access through natural orifices...
February 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28573601/gallic-acid-and-p-coumaric-acid-attenuate-type-2-diabetes-induced-neurodegeneration-in-rats
#7
Adel Abdel-Moneim, Ahmed I Yousef, Sanaa M Abd El-Twab, Eman S Abdel Reheim, Mohamed B Ashour
The brain of diabetics revealed deterioration in many regions, especially the hippocampus. Hence, the present study aimed to evaluate the effects of gallic acid and p-coumaric acid against the hippocampal neurodegeneration in type 2 diabetic rats. Adult male albino rats were randomly allocated into four groups: Group 1 served as control ones and others were induced with diabetes. Group 2 considered as diabetic, and groups 3 and 4 were further orally treated with gallic acid (20 mg/kg b.wt./day) and p-coumaric acid (40 mg/kg b...
June 2, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28567576/effect-of-a-trans-fatty-acid-enriched-diet-on-mitochondrial-inflammatory-and-oxidative-stress-parameters-in-the-cortex-and-hippocampus-of-wistar-rats
#8
Rafael Longhi, Roberto Farina Almeida, Leticia Ferreira Pettenuzzo, Débora Guerini Souza, Letiane Machado, André Quincozes-Santos, Diogo Onofre Souza
PURPOSE: Previously showed that dietary trans fatty acids (TFAs) may cause systemic inflammation and affect the central nervous system (CNS) in Wistar rats by increased levels of cytokines in the cerebrospinal fluid (CSF) and serum (Longhi et al. Eur J Nutr 56(3):1003-1016, 1). Here, we aimed to clarifying the impact of diets with different TFA concentrations on cerebral tissue, focusing on hippocampus and cortex and behavioral performance. METHODS: Wistar rats were fed either a normolipidic or a hyperlipidic diet for 90 days; diets had the same ingredients except for fat compositions, concentrations, and calories...
May 31, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28562667/therapeutic-silence-of-pleiotrophin-by-targeted-delivery-of-sirna-and-its-effect-on-the-inhibition-of-tumor-growth-and-metastasis
#9
Lisha Zha, Lichun He, Weidong Xie, Jin Cheng, Tong Li, Mona O Mohsen, Fan Lei, Federico Storni, Martin Bachmann, Hongquan Chen, Yaou Zhang
Pleiotrophin (PTN) is a secreted cytokine that is expressed in various cancer cell lines and human tumor such as colon cancer, lung cancer, gastric cancer and melanoma. It plays significant roles in angiogenesis, metastasis, differentiation and cell growth. The expression of PTN in the adult is limited to the hippocampus in an activity-dependent manner, making it a very attractive target for cancer therapy. RNA interference (RNAi) offers great potential as a new powerful therapeutic strategy based on its highly specific and efficient silencing of a target gene...
2017: PloS One
https://www.readbyqxmd.com/read/28549492/ginsenoside-rb1-attenuates-isoflurane-surgery-induced-cognitive-dysfunction-via-inhibiting-neuroinflammation-and-oxidative-stress
#10
Hui Hui Miao, Ye Zhang, Guan Nan Ding, Fang Xiao Hong, Peng Dong, Ming Tian
OBJECTIVE: Anesthetic isoflurane plus surgery has been reported to induce cognitive impairment. The underlying mechanism and targeted intervention remain largely to be determined. Ginsenoside Rb1 was reported to be neuroprotective. We therefore set out to determine whether ginsenoside Rb1 can attenuate isoflurane/surgery-induced cognitive dysfunction via inhibiting neuroinflammation and oxidative stress. METHODS: Five-months-old C57BL/6J female mice were treated with 1...
May 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28523794/mineralocorticoid-receptor-associates-with-pro-inflammatory-bias-in-hippocampus-of-spontaneously-hypertensive-rats
#11
María Elvira Brocca, Luciana Pietranera, Maria Meyer, Analia Lima, Paulina Roig, E Ronald de Kloet, Alejandro F De Nicola
Damage observed in the hippocampus of the adult spontaneously hypertensive rat (SHR) resembles the neuropathology of mineralocorticoid-induced hypertension, supporting a similar endocrine dysfunction in both entities. In this study we have tested the hypothesis that increased expression of the hippocampal mineralocorticoid receptor (MR) in SHR animals is associated with a prevalent expression of pro-inflammatory over anti-inflammatory factors. For this purpose we measured in hippocampus mRNA expression and immunoreactivity of the MR and the glucocorticoid receptor (GR) using qPCR and histochemistry...
May 18, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28523372/dietary-eicosapentaenoic-acid-normalizes-hippocampal-omega-3-and-6-polyunsaturated-fatty-acid-profile-attenuates-glial-activation-and-regulates-bdnf-function-in-a-rodent-model-of-neuroinflammation-induced-by-central-interleukin-1%C3%AE-administration
#12
Yilong Dong, Min Xu, Allan V Kalueff, Cai Song
PURPOSE: Interleukin (IL)-1β can activate glial cells to trigger neuroinflammation and neurodegeneration. Lower omega (n)-3 polyunsaturated fatty acids (PUFAs) and lower n-3/n-6 PUFA ratios occur in the brain of patients with Alzheimer's disease (AD). We have previously reported that an n-3 PUFA, eicosapentaenoic acid (EPA), can improve memory and attenuate neurodegeneration-like changes in animal models of AD. However, whether and how EPA modulates glial cell activity and functions remains unclear...
May 18, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28514831/hypericum-perforatum-extract-attenuates-behavioral-biochemical-and-neurochemical-abnormalities-in-aluminum-chloride-induced-alzheimer-s-disease-rats
#13
Zheng Cao, Fan Wang, Chunyu Xiu, Jian Zhang, Yanfei Li
Alzheimer's disease (AD) is a progressive and ultimately fatal neurodegenerative diseases. Aluminum, a neurotoxic metal, is considered as the pathological hallmark and contributing factor of AD. Hypericum perforatum extract (HPE) is a neuroprotective agent that can prevent neurodegenerative pathologies through antioxidants, anti-inflammatory and regulating neurotransmitter release in animal model of neuropathy. The present study aimed to identify the potential neuroprotective of HPE on AlCl3-induced AD rats...
July 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28507478/melatonin-regulates-the-aging-mouse-hippocampal-homeostasis-via-the-sirtuin1-foxo1-pathway
#14
Anorut Jenwitheesuk, Parichart Boontem, Prapimpun Wongchitrat, Jiraporn Tocharus, Sujira Mukda, Piyarat Govitrapong
Sirtuin1 (SIRT1) and forkhead box transcription factor O subfamily 1 (FOXO1) play vital roles in the maintenance of hippocampal neuronal homeostasis during aging. Our previous study showed that melatonin, a hormone mainly secreted by the pineal gland, restored the impaired memory of aged mice. Age-related neuronal energy deficits contribute to the pathogenesis of several neurodegenerative disorders. An attempt has been made to determine whether the effect of melatonin is mediated through the SIRT1-FOXO1 pathways...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28497109/hippocampal-tnf%C3%AE-signaling-contributes-to-seizure-generation-in-an-infection-induced-mouse-model-of-limbic-epilepsy
#15
Dipan C Patel, Glenna Wallis, E Jill Dahle, Pallavi B McElroy, Kyle E Thomson, Raymond J Tesi, David E Szymkowski, Peter J West, Roy M Smeal, Manisha Patel, Robert S Fujinami, H Steve White, Karen S Wilcox
Central nervous system infection can induce epilepsy that is often refractory to established antiseizure drugs. Previous studies in the Theiler's murine encephalomyelitis virus (TMEV)-induced mouse model of limbic epilepsy have demonstrated the importance of inflammation, especially that mediated by tumor necrosis factor-α (TNFα), in the development of acute seizures. TNFα modulates glutamate receptor trafficking via TNF receptor 1 (TNFR1) to cause increased excitatory synaptic transmission. Therefore, we hypothesized that an increase in TNFα signaling after TMEV infection might contribute to acute seizures...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28485779/effects-of-vitamin-b12-on-postoperative-cognitive-dysfunction-induced-by-isoflurane-anesthesia-in-rats
#16
H-Y Sha, J-B Zhao, M-X Sha, S-M Guo
OBJECTIVE: Postoperative cognitive dysfunction is a clinical syndrome associated with cognitive decline in patients after anesthesia. This study aimed to investigate the effect of VB12 (Vitamin B12), a kind of necessary micronutrients promoting the growth and development of the nervous system, on cognitive dysfunction induced by isoflurane anesthesia. MATERIALS AND METHODS: Eighteen-month-old rats were exposed to or were not exposed to 1.4% isoflurane for 2 h. Two hours before isoflurane exposure, rats in groups with VB12 were injected intramuscularly with VB12 at 10 or 20 μg...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28476689/pax6-interacts-with-iba1-and-shows-age-associated-alterations-in-brain-of-aging-mice
#17
Shashank Kumar Maurya, Rajnikant Mishra
The Pax6, a transcriptional regulator and multifunctional protein, has been found critical for neurogenesis, neuro-degeneration, mental retardation, neuroendocrine tumors, glioblastoma and astrocytomas. The age-associated alteration in the expression of Pax6 in neuron and glia has also been observed in the immunologically privileged brain. Therefore, it is presumed that Pax6 may modulate brain immunity by activation of microglia either directly interacting with genes or proteins of microglia or indirectly though inflammation associated with neurodegeneration...
May 3, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28469657/fermented-chinese-formula-shuan-tong-ling-attenuates-ischemic-stroke-by-inhibiting-inflammation-and-apoptosis
#18
Zhi-Gang Mei, Ling-Jing Tan, Jin-Feng Wang, Xiao-Li Li, Wei-Feng Huang, Hua-Jun Zhou
The fermented Chinese formula Shuan-Tong-Ling is composed of radix puerariae (Gegen), salvia miltiorrhiza (Danshen), radix curcuma (Jianghuang), hawthorn (Shanzha), salvia chinensis (Shijianchuan), sinapis alba (Baijiezi), astragalus (Huangqi), panax japonicas (Zhujieshen), atractylodes macrocephala koidz (Baizhu), radix paeoniae alba (Baishao), bupleurum (Chaihu), chrysanthemum (Juhua), rhizoma cyperi (Xiangfu) and gastrodin (Tianma), whose aqueous extract was fermented with lactobacillus, bacillus aceticus and saccharomycetes...
March 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28458992/effects-of-acute-toluene-toxicity-on-different-regions-of-rabbit-brain
#19
Mehmet Demır, Mustafa Cicek, Nadire Eser, Atila Yoldaş, Turgay Sısman
The acute phase effects of toluene on the brain have been investigated in this study using rabbit brain via histopathological, immunohistochemical, and biochemical methods. A total of 20 male rabbits were used as control and experimental groups. Moreover, nerve growth factor (NGF), tumor necrosis factor-alpha (TNF-alpha), dopamine (DA), and glial fibrillary acidic protein (GFAP) tests were performed in order to designate the severity of the biochemical damage. In the biochemical evaluation of the prefrontal cortex, hippocampus, hypothalamus, substantia nigra, and entorhinal cortex, the TNF-alpha levels in the brain were found to be significantly higher than in the control group...
2017: Analytical Cellular Pathology (Amsterdam)
https://www.readbyqxmd.com/read/28442944/immunohistochemical-localization-of-translationally-controlled-tumor-protein-in-axon-terminals-of-mouse-hippocampal-neurons
#20
Seong-Yeon Bae, Vadim Sheverdin, Jeehye Maeng, In Kyoon Lyoo, Pyung-Lim Han, Kyunglim Lee
Translationally controlled tumor protein (TCTP) is a cytosolic protein with microtubule stabilization and calcium-binding activities. TCTP is expressed in most organs including the nervous system. However, detailed distribution and functional significance of TCTP in the brain remain unexplored. In this study, we investigated the global and subcellular distributions of TCTP in the mouse brain. Immunohistochemical analyses with anti-TCTP revealed that TCTP was widely distributed in almost all regions of the brain including the cerebral cortex, thalamus, hypothalamus, hippocampus, and amygdala, wherein it was localized in axon tracts and axon terminals...
April 2017: Experimental Neurobiology
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