keyword
MENU ▼
Read by QxMD icon Read
search

Brain receptors

keyword
https://www.readbyqxmd.com/read/29684712/high-salt-intake-enhances-swim-stress-induced-pvn-vasopressin-cell-activation-and-active-stress-coping
#1
N C Mitchell, T L Gilman, L C Daws, G M Toney
PURPOSE: Stress contributes to many psychiatric disorders; however, responsivity to stressors can vary depending on previous or current stress exposure. Relatively innocuous heterotypic (differing in type) stressors can summate to result in exaggerated neuronal and behavioral responses. Here we investigated the ability of prior high dietary sodium chloride (salt) intake, a dehydrating osmotic stressor, to enhance neuronal and behavioral responses of mice to an acute psychogenic swim stress (SS)...
April 6, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29684590/a-synthetic-snake-venom-based-tripeptide-glu-val-trp-protects-pc12-cells-from-mpp-toxicity-by-activating-the-ngf-signaling-pathway
#2
Carolina P Bernardes, Neife A G Santos, Flavia M Sisti, Rafaela Scalco Ferreira, Norival A Santos-Filho, Adélia C O Cintra, Eduardo M Cilli, Suely V Sampaio, Antonio C Santos
Venom small peptides that target neurotrophin receptors might be beneficial in neurodegeneration, including Parkinsońs disease (PD). Their small size, ease of synthesis, structural stability and target selectivity make them important tools to overcome the limitations of endogenous neurotrophins as therapeutic agents. Additionally, they might be optimized to improve resistance to enzymatic degradation, bioavailability, potency and, mainly, lipophilicity, important to cross the blood brain barrier (BBB). Here, we evaluated the neuroprotective effects and mechanisms of the synthetic snake-venom-based peptide p-BTX-I (Glu-Val-Trp) in PC12 cells treated with MPP+ (1-methyl-4-phenylpyridinium), a dopaminergic neurotoxin that induces Parkinsonism in vivo...
April 20, 2018: Peptides
https://www.readbyqxmd.com/read/29684521/the-hypoxic-peri-arteriolar-glioma-stem-cell-niche-an-integrated-concept-of-five-types-of-niches-in-human-glioblastoma
#3
REVIEW
Diana A Aderetti, Vashendriya V V Hira, Remco J Molenaar, Cornelis J F van Noorden
Glioblastoma is the most lethal primary brain tumor and poor survival of glioblastoma patients is attributed to the presence of glioma stem cells (GSCs). These therapy-resistant, quiescent and pluripotent cells reside in GSC niches, which are specific microenvironments that protect GSCs against radiotherapy and chemotherapy. We previously showed the existence of hypoxic peri-arteriolar GSC niches in glioblastoma tumor samples. However, other studies have described peri-vascular niches, peri-hypoxic niches, peri-immune niches and extracellular matrix niches of GSCs...
April 20, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29684507/angiotensin-ii-type-1a-receptors-in-the-subfornical-organ-modulate-neuroinflammation-in-the-hypothalamic-paraventricular-nucleus-in-heart-failure-rats
#4
Yang Yu, Shun-Guang Wei, Robert M Weiss, Robert B Felder
Inflammation in the hypothalamic paraventricular nucleus (PVN) contributes to neurohumoral excitation and its adverse consequences in systolic heart failure (HF). The stimuli that trigger inflammation in the PVN in HF are not well understood. Angiotensin II (AngII) has pro-inflammatory effects, and circulating levels of AngII increase in HF. The subfornical organ (SFO), a circumventricular structure that lacks an effective blood-brain barrier and senses circulating AngII, contains PVN-projecting neurons. We hypothesized that activation of AngII type 1a receptors (AT1a R) in the SFO induces neuroinflammation downstream in the PVN...
April 20, 2018: Neuroscience
https://www.readbyqxmd.com/read/29684446/angiotensin-receptor-blocker-losartan-ameliorates-neuroinflammation-and-behavioral-consequences-of-lipopolysaccharide-injection
#5
Hossein Salmani, Mahmoud Hosseini, Farimah Beheshti, Yousef Baghcheghi, Hamid Reza Sadeghnia, Mohammad Soukhtanloo, Mohammad Naser Shafei, Majid Khazaei
AIMS: Neuroinflammation has a critical role in brain diseases. Angiotensin II (Ang II) is an important player in inflammation via stimulating of Ang II type 1 receptor (AT1R). In this study, the effects of losartan, an Ang II receptor blocker, on the brain inflammation, oxidative stress and behavioral consequences of lipopolysaccharide (LPS) injection were investigated. MAIN METHODS: Rats were intraperitoneally (i.p.) injected with 1 or 3 mg/kg losartan or saline for 24 continuous days...
April 20, 2018: Life Sciences
https://www.readbyqxmd.com/read/29684390/lack-of-dopamine-supersensitivity-in-rats-after-chronic-administration-of-blonanserin-comparison-with-haloperidol
#6
Takashi Hashimoto, Satoko Baba, Hiroko Ikeda, Yasunori Oda, Kenji Hashimoto, Isao Shimizu
Long-term treatment with antipsychotic drugs in patients with schizophrenia can lead to dopamine supersensitivity psychosis. It is reported that repeated administration of haloperidol caused dopamine supersensitivity in rats. Blonanserin is an atypical antipsychotic drug with high affinity for dopamine D2 , D3 and serotonin2A receptors. In this study, we investigated whether chronic administration of blonanserin leads to dopamine supersensitivity. Following oral treatment with blonanserin (0.78mg/kg) or haloperidol (1...
April 20, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29684234/systemic-treatment-options-for-brain-metastases-from-non-small-cell-lung-cancer
#7
REVIEW
Ajaz Bulbul, Patrick M Forde, Ayesha Murtuza, Brian Woodward, Hannah Yang, Ingmar Bastian, Parissa K Ferguson, Fernando Lopez-Diaz, David S Ettinger, Hatim Husain
Brain metastases are common in patients with non-small-cell lung cancer (NSCLC). Because of associated poor prognosis and limited specific treatment options, there is a real need for the development of medical therapies and strategies for affected patients. Novel compounds for epidermal growth factor receptor-dependent and anaplastic lymphoma kinase-dependent lung cancer have demonstrated blood-brain barrier permeability and have led to important improvements in central nervous system outcomes. Studies of targeted therapies for oncogene-driven tumors and of immunotherapies in patients with brain metastases have shown promise and, allied with novel radiation techniques, are driving a rapid evolution in treatment and prognosis for NSCLC brain metastases...
April 15, 2018: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/29683870/isosteviol-sodium-injection-improves-outcomes-by-modulating-tlrs-nf-%C3%AE%C2%BAb-dependent-inflammatory-responses-following-experimental-traumatic-brain-injury-in-rats
#8
Jie Zan, Hao Zhang, Min-Yi Lu, Hui-Min Beng, Kai-Lun Zhong, Xiao-Ou Sun, Wen Tan
Previous studies have shown that isosteviol sodium (STVNa) protects against permanent cerebral ischemia injury by inhibition of the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB)-mediated inflammatory responses. Overwhelming evidence shows that toll-like receptors (TLRs) are the upstream regulators of NF-κB. On the basis of the similarity of the pathology caused by traumatic brain injury (TBI) and stroke, we speculated that STVNa may have a therapeutic effect against TBI through regulation of the TLRs/NF-κB signaling-mediated inflammatory response...
April 20, 2018: Neuroreport
https://www.readbyqxmd.com/read/29683852/reversing-interferon-alpha-neurotoxicity-in-a-hiv-associated-neurocognitive-disorders-mouse-model
#9
Rajeth Koneru, Heather Bimonte-Nelson, Vincent Ciavatta, Woldeab Haile, Kate Elmore, Jennifer Ward, Leonard Maroun, William R Tyor
OBJECTIVE: Increased brain interferon-alpha (IFNα) is associated with neurodegenerative disorders, including HIV-associated neurocognitive disorders (HAND). HAND occurs in approximately 50% of individuals with HIV despite combined antiretroviral therapy (cART). Therefore, adjunctive therapies must be developed that prevent progression of mild forms of HAND to HIV-associated dementia. Increased IFNα in the CNS has been associated with HAND in patients and in a HAND mouse model. DESIGN AND METHODS: B18R binds IFNα and ameliorates HAND mouse brain histopathology (HIV encephalitis)...
April 19, 2018: AIDS
https://www.readbyqxmd.com/read/29682799/the-differences-between-glun2a-and-glun2b-signaling-in-the-brain
#10
REVIEW
Yongjun Sun, Yingge Xu, Xiaokun Cheng, Xi Chen, Yinghua Xie, Linan Zhang, Long Wang, Jie Hu, Zibin Gao
The N-methyl-d-aspartate (NMDA) receptor, a typical ionotropic glutamate receptor, is a crucial protein for maintaining brain function. GluN2A and GluN2B are the main types of NMDA receptor subunit in the adult forebrain. Studies have demonstrated that they play different roles in a number of pathophysiological processes. Although the underlying mechanism for this has not been clarified, the most fundamental reason may be the differences between the signaling pathways associated with GluN2A and GluN2B. With the aim of elucidating the reasons behind the diverse roles of these two subunits, we described the signaling differences between GluN2A and GluN2B from the aspects of C-terminus-associated molecules, effects on typical downstream signaling proteins, and metabotropic signaling...
April 22, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29682700/therapeutic-potential-of-a-combination-of-electroacupuncture-and-trkb-expressing-mesenchymal-stem-cells-for-ischemic-stroke
#11
Sung Min Ahn, Yu Ri Kim, Yong-Il Shin, Ki Tae Ha, Seo-Yeon Lee, Hwa Kyoung Shin, Byung Tae Choi
We prepared and grafted tropomyosin receptor kinase B (TrkB) gene-transfected mesenchymal stem cells (TrkB-MSCs) into the ischemic penumbra and investigated whether electroacupuncture (EA) treatment could promote functional recovery from ischemic stroke. For the behavioral test, TrkB-MSCs+EA resulted in significantly improved motor function compared to that obtained with MSCs+EA or TrkB-MSCs alone. At 30 days after middle cerebral artery occlusion (MCAO), the largest number of grafted MSCs was detected in the TrkB-MSC+EA group...
April 22, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29682629/triheteromeric-nmda-receptors-from-structure-to-synaptic-physiology
#12
David Stroebel, Mariano Casado, Pierre Paoletti
N-methyl-D-aspartate receptors (NMDARs) are glutamate-gated ion channels that play crucial roles in brain development and synaptic plasticity. They are also therapeutic targets of interest since their dysfunction is associated with multiple neurological and psychiatric disorders. In vivo , NMDARs exist as multiple subtypes that differ in their subunit composition, anatomical distribution, functional properties, as well as signaling capacities. While much is known about diheteromeric NMDARs composed of two GluN1 subunits and two identical GluN2 (or GluN3) subunits, the majority of native NMDARs are triheteromers containing two GluN1 and two different GluN2 (or a combination of GluN2 and GluN3)...
April 2018: Current Opinion in Physiology
https://www.readbyqxmd.com/read/29682548/electric-stimulation-of-ear-reduces-the-effect-of-toll-like-receptor-4-signaling-pathway-on-kainic-acid-induced-epileptic-seizures-in-rats
#13
En-Tzu Liao, Yi-Wen Lin, Chun-Ping Huang, Nou-Ying Tang, Ching-Liang Hsieh
Epilepsy is a common clinical syndrome with recurrent neuronal discharges in the temporal lobe, cerebral cortex, and hippocampus. Clinical antiepileptic medicines are often ineffective or of little benefit in 30% of epileptic patients and usually cause severe side effects. Emerging evidence indicates the crucial role of inflammatory mediators in epilepsy. The current study investigates the role of toll-like receptor 4 (TLR4) and its underlying mechanisms in kainic acid- (KA-) induced epileptic seizures in rats...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29681847/cholinergic-hypofunction-in-presbycusis-related-tinnitus-with-cognitive-function-impairment-emerging-hypotheses
#14
Qingwei Ruan, Zhuowei Yu, Weibin Zhang, Jian Ruan, Chunhui Liu, Ruxin Zhang
Presbycusis (age-related hearing loss) is a potential risk factor for tinnitus and cognitive deterioration, which result in poor life quality. Presbycusis-related tinnitus with cognitive impairment is a common phenotype in the elderly population. In these individuals, the central auditory system shows similar pathophysiological alterations as those observed in Alzheimer's disease (AD), including cholinergic hypofunction, epileptiform-like network synchronization, chronic inflammation, and reduced GABAergic inhibition and neural plasticity...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29681795/delta-opioid-receptor-signaling-promotes-resilience-to-stress-under-the-repeated-social-defeat-paradigm-in-mice
#15
Mathilde S Henry, Kanchan Bisht, Nathalie Vernoux, Louis Gendron, Angélica Torres-Berrio, Guy Drolet, Marie-Ève Tremblay
The adaptation to chronic stress is highly variable across individuals. Resilience to stress is a complex process recruiting various brain regions and neurotransmitter systems. The aim of this study was to investigate the involvement of endogenous opioid enkephalin (ENK) signaling in the development of stress resilience in mice. The translational model of repeated social defeat (RSD) stress was selected to mimic the unpredictable disruptions of daily life and induce resilience or vulnerability to stress. As in humans, adult C57BL/6J mice demonstrated a great variability in their response to stress under this paradigm...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29681474/ejaculation-induced-by-the-activation-of-crz-neurons-is-rewarding-to-drosophila-males
#16
Shir Zer-Krispil, Hila Zak, Lisha Shao, Shir Ben-Shaanan, Lea Tordjman, Assa Bentzur, Anat Shmueli, Galit Shohat-Ophir
The reward system is a collection of circuits that reinforce behaviors necessary for survival [1, 2]. Given the importance of reproduction for survival, actions that promote successful mating induce pleasurable feeling and are positively reinforced [3, 4]. This principle is conserved in Drosophila, where successful copulation is naturally rewarding to male flies, induces long-term appetitive memories [5], increases brain levels of neuropeptide F (NPF, the fly homolog of neuropeptide Y), and prevents ethanol, known otherwise as rewarding to flies [6, 7], from being rewarding [5]...
April 17, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29680784/silibinin-exerts-antidepressant-effects-by-improving-neurogenesis-through-bdnf-trkb-pathway
#17
Yan-Jiao Li, Yu-Jiao Li, Liu-Di Yang, Kun Zhang, Kai-Yin Zheng, Xin-Miao Wei, Qi Yang, Wen-Min Niu, Ming-Gao Zhao, Yu-Mei Wu
Classic antidepressants benefit depression patients partially by improving neurogenesis and/or brain-derived neurotrophic factor (BDNF)/TrkB pathway which were impaired in depression. In this study, we demonstrated that Silibinin (SLB), a polyphenolic flavanoid from Silybum marianum, ameliorated reserpinized mouse depressant-like behaviors. The antidepressants of SLB administration was associated with increased neural stem cells (NSCs) proliferation and further confirmed in BDNF/TrkB signaling transduction...
April 19, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29680698/effectiveness-of-memantine-on-depression-like-behavior-memory-deficits-and-brain-mrna-levels-of-bdnf-and-trkb-in-rats-subjected-to-repeated-unpredictable-stress
#18
Meysam Amidfar, Yong-Ku Kim, Ove Wiborg
BACKGROUND: Previous clinical and preclinical studies have indicated that the N-methyl-d-aspartate (NMDA) receptor antagonist, memantine, has neuroprotective properties as well as antidepressant effects. The present study was designed to examine behavioral and molecular effects of memantine administration in rats subjected to the repeated unpredictable stress (RUS) paradigm. METHODS: Rats were split into four groups at random including control + saline, control + memantine, stressed + saline and stressed + memantine...
December 20, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29680514/brain-blood-cerebrospinal-fluid-and-serum-biomarkers-in-schizophrenia
#19
REVIEW
Alireza Mohammadi, Ehsan Rashidi, Vahid Ghasem Amooeian
Over the last decade, finding a reliable biomarker for the early detection of schizophrenia (Scz) has been a topic of interest. The main goal of the current review is to provide a comprehensive view of the brain, blood, cerebrospinal fluid (CSF), and serum biomarkers of Scz disease. Imaging studies have demonstrated that the volumes of the corpus callosum, thalamus, hippocampal formation, subiculum, parahippocampal gyrus, superior temporal gyrus, prefrontal and orbitofrontal cortices, and amygdala-hippocampal complex were reduced in patients diagnosed with Scz...
April 13, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29680437/treatment-of-restless-legs-syndrome-willis-ekbom-disease-with-the-non-selective-ent1-ent2-inhibitor-dipyridamole-testing-the-adenosine-hypothesis
#20
Diego Garcia-Borreguero, Xavier Guitart, Celia Garcia Malo, Irene Cano-Pumarega, Juan José Granizo, Sergi Ferré
OBJECTIVES: Recent animal models of restless legs syndrome (RLS) suggest that brain iron deficiency is associated with a hypoadenosinergic state, with downregulation of adenosine A1 receptors (A1R) in the striatum and cortex. We hypothesized that an increase in extracellular adenosine induced by inhibitors of adenosine transporters, such as the non-selective ENT1/ENT2 inhibitor dipyridamole, would result in an improvement in RLS symptoms. METHODS: In a prospective two-month open-label, non-placebo controlled clinical trial, 15 untreated idiopathic RLS patients began treatment with 100 mg dipyridamole (with uptitration to 400 mg if necessary)...
May 2018: Sleep Medicine
keyword
keyword
11447
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"