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https://www.readbyqxmd.com/read/29342113/mitochondria-oxidative-stress-and-the-kynurenine-system-with-a-focus-on-ageing-and-neuroprotection
#1
REVIEW
Katalin Sas, Elza Szabó, László Vécsei
In this review, the potential causes of ageing are discussed. We seek to gain insight into the main physiological functions of mitochondria and discuss alterations in their function and the genome, which are supposed to be the central mechanisms in senescence. We conclude by presenting the potential modulating role of the kynurenine pathway in the ageing processes. Mitochondrial dynamics are supposed to have important physiological roles in maintaining cell homeostasis. During ageing, a decrease in mitochondrial dynamics was reported, potentially compromising the function of mitochondria...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341893/targeting-bdnf-modulation-by-plant-glycosides-as-a-novel-therapeutic-strategy-in-the-treatment-of-depression
#2
REVIEW
Haroon Khan, Surriya Amin, Seema Patel
Current therapies in clinical practice face strong criticism regarding their efficacy, and side effects, which forced the neuro-researchers to discover novel agents with different mechanistic insights. Glycosides are naturally-occurring plant secondary metabolites with significant medicinal potential and clinical scope as antidepressant. The aim of this review is to focus on the antidepressant effects of glycosides in preclinical studies, with an emphasis on the possible mechanisms. The literature search revealed that only a few phytoglycosides have been evaluated for their relevance in depression alleviation...
January 13, 2018: Life Sciences
https://www.readbyqxmd.com/read/29341803/licorice-pretreatment-protects-against-brain-damage-induced-by-middle-cerebral-artery-occlusion-in-mice
#3
Chiyeon Lim, Sehyun Lim, Byoungho Lee, Buyeo Kim, Suin Cho
Licorice is extracted from the roots of plants in the Glycyrrhiza genus, especially Glycyrrhiza uralensis in China and Korea. It has several pharmacological activities, including neuro-protective, anti-fungal, and anti-cariogenic effects. Ischemia/reperfusion-induced brain injury is a leading cause of adult disability and death; thus, the identification of anti-apoptotic, neuro-protective therapeutic agents is viewed as an attractive drug development strategy. Infarct volumes and the expression of several apoptosis-related proteins, including Bcl-xL, Bcl-2, caspase-8, and caspase-9, were evaluated by western blotting in the brains of mice subjected to middle cerebral artery occlusion (MCAO)...
January 17, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29341414/post-translational-incorporation-of-3-4-dihydroxyphenylalanine-into-the-c-terminus-of-%C3%AE-tubulin-in-living-cells
#4
Yanela M Dentesano, Yanina Ditamo, Cristian Hansen, Carlos A Arce, C Gastón Bisig
The C-terminal tyrosine (Tyr) of the α-tubulin chain is subjected to post-translational removal and re-addition in a process termed the "detyrosination/tyrosination cycle". We showed in previous studies using soluble rat brain extracts that L-3,4-dihydroxyphenylalanine (L-Dopa) is incorporated into the same site as Tyr. We now demonstrate that L-Dopa incorporation into tubulin also occurs in living cells. We detected such incorporation by determining the "tyrosination state" of tubulin before and after incubation of cells in the presence of L-Dopa...
January 17, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29340286/cancer-imaging-phenomics-toolkit-quantitative-imaging-analytics-for-precision-diagnostics-and-predictive-modeling-of-clinical-outcome
#5
Christos Davatzikos, Saima Rathore, Spyridon Bakas, Sarthak Pati, Mark Bergman, Ratheesh Kalarot, Patmaa Sridharan, Aimilia Gastounioti, Nariman Jahani, Eric Cohen, Hamed Akbari, Birkan Tunc, Jimit Doshi, Drew Parker, Michael Hsieh, Aristeidis Sotiras, Hongming Li, Yangming Ou, Robert K Doot, Michel Bilello, Yong Fan, Russell T Shinohara, Paul Yushkevich, Ragini Verma, Despina Kontos
The growth of multiparametric imaging protocols has paved the way for quantitative imaging phenotypes that predict treatment response and clinical outcome, reflect underlying cancer molecular characteristics and spatiotemporal heterogeneity, and can guide personalized treatment planning. This growth has underlined the need for efficient quantitative analytics to derive high-dimensional imaging signatures of diagnostic and predictive value in this emerging era of integrated precision diagnostics. This paper presents cancer imaging phenomics toolkit (CaPTk), a new and dynamically growing software platform for analysis of radiographic images of cancer, currently focusing on brain, breast, and lung cancer...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29339258/relationship-between-very-early-brain-structure-and-neuromotor-neurological-and-neurobehavioral-function-in-infants-born-31%C3%A2-weeks-gestational-age
#6
Joanne M George, Simona Fiori, Jurgen Fripp, Kerstin Pannek, Andrea Guzzetta, Michael David, Robert S Ware, Stephen E Rose, Paul B Colditz, Roslyn N Boyd
AIM: This study aimed to examine associations between structural MRI and concurrent motor, neurological and neurobehavioral measures at 30-32 weeks postmenstrual age (PMA; 'Early'), and at term equivalent age ('Term'). METHOD: In this prospective cohort study, infants underwent Early MRI (n = 119; 73 male; median 32 weeks 1 day PMA) and Term MRI (n = 102; 61 male; median 40 weeks 4 days PMA) at 3 T. Structural images were scored generating white matter (WM), cortical gray matter, deep gray matter, cerebellar and global brain abnormality scores...
January 13, 2018: Early Human Development
https://www.readbyqxmd.com/read/29336875/systems-pharmacology-dissection-of-the-anti-stroke-mechanism-for-the-chinese-traditional-medicine-xing-nao-jing
#7
Yuhua Chen, Yue Sun, Wende Li, Hong Wei, Tianlin Long, Hua Li, Quanhua Xu, Wei Liu
Xing-Nao-Jing (XNJ) is a well-known injection that has been extensively applied in clinical treatment of stroke in China. However, the underlying mechanism of clinical administration of XNJ in stroke remains unclear. In this study, a systems pharmacology strategy based on pharmacokinetic and pharmacodynamics data was applied to analyze the pharmacological effect of XNJ on stroke. Sixteen active compounds were filtered from XNJ through Drug-likeness (DL) and Brain-blood-barrier (BBB) evaluations. Ninety-four potential targets of these active components were identified by SysDT and SEA...
December 20, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29336125/association-of-chronic-subjective-tinnitus-with-neuro-cognitive-performance
#8
Sunita Gudwani, Sanjay K Munjal, Naresh K Panda, Adarsh Kohli
INTRODUCTION: Chronic subjective tinnitus is associated with cognitive disruptions affecting perception, thinking, language, reasoning, problem solving, memory, visual tasks (reading) and attention. OBJECTIVE: To evaluate existence of any association between tinnitus parameters and neuropsychological performance to explain cognitive processing. MATERIALS AND METHODS: Study design was prospective, consisting 25 patients with idiopathic chronic subjective tinnitus and gave informed consent before planning their treatment...
December 1, 2017: International Tinnitus Journal
https://www.readbyqxmd.com/read/29335006/genetic-dissection-of-the-neuro-glio-vascular-machinery-in-the-adult-brain
#9
Gregory W Kirschen, Rachel Kéry, Hanxiao Liu, Afrinash Ahamad, Liang Chen, Wendy Akmentin, Ramya Kumar, Joel Levine, Qiaojie Xiong, Shaoyu Ge
The adult brain actively controls its metabolic homeostasis via the circulatory system at the blood brain barrier interface. The mechanisms underlying the functional coupling from neuron to vessel remain poorly understood. Here, we established a novel method to genetically isolate the individual components of this coupling machinery using a combination of viral vectors. We first discovered a surprising non-uniformity of the glio-vascular structure in different brain regions. We carried out a viral injection screen and found that intravenous Canine Adenovirus 2 (CAV2) preferentially targeted perivascular astrocytes throughout the adult brain, with sparing of the hippocampal hilus from infection...
January 15, 2018: Molecular Brain
https://www.readbyqxmd.com/read/29333681/myotropic-activity-and-immuno-localization-of-selected-neuropeptides-of-the-burying-beetle-nicrophorus-vespilloides-coleoptera-silphidae
#10
Arkadiusz Urbański, Jan Lubawy, Paweł Marciniak, Grzegorz Rosiński
Burying beetles (Nicrophorus sp.) are necrophagous insects with developed parental care. Genome of Nicrophorus vespilloides has been recently sequenced, which makes them interesting model organism in behavioural ecology. However, we know very little about their physiology, including the functioning of their neuro-endocrine system. In this study, one of the physiological activities of proctolin, myosuppressin (Nicve-MS), myoinhibitory peptide (Trica-MIP-5) and the short neuropeptide F (Nicve-sNPF) in N. vespilloides have been investigated...
January 15, 2018: Insect Science
https://www.readbyqxmd.com/read/29333521/nanomaterials-for-convection-enhanced-delivery-of-agents-to-treat-brain-tumors
#11
Young-Eun Seo, Tom Bu, W Mark Saltzman
Nanomaterials represent a promising and versatile platform for the delivery of therapeutics to the brain. Treatment of brain tumors has been a long-standing challenge in the field of neuro-oncology. The current standard of care - a multimodal approach of surgery, radiation and chemotherapy - yields only a modest therapeutic benefit for patients with malignant gliomas. A major obstacle for treatment is the failure to achieve sufficient delivery of therapeutics at the tumor site. Recent advances in local drug delivery techniques, along with the development of highly effective brain-penetrating nanocarriers, have significantly improved treatment and imaging of brain tumors in preclinical studies...
December 2017: Current Opinion in Biomedical Engineering
https://www.readbyqxmd.com/read/29332604/the-effect-of-an-adenosine-a2a-agonist-on-intra-tumoral-concentrations-of-temozolomide-in-patients-with-recurrent-glioblastoma
#12
Sadhana Jackson, Jon Weingart, Edjah K Nduom, Thura T Harfi, Richard T George, Dorothea McAreavey, Xiaobu Ye, Nicole M Anders, Cody Peer, William D Figg, Mark Gilbert, Michelle A Rudek, Stuart A Grossman
BACKGROUND: The blood-brain barrier (BBB) severely limits the entry of systemically administered drugs including chemotherapy to the brain. In rodents, regadenoson activation of adenosine A2A receptors causes transient BBB disruption and increased drug concentrations in normal brain. This study was conducted to evaluate if activation of A2A receptors would increase intra-tumoral temozolomide concentrations in patients with glioblastoma. METHODS: Patients scheduled for a clinically indicated surgery for recurrent glioblastoma were eligible...
January 15, 2018: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/29327203/loss-of-cx43-mediated-functional-gap-junction-communication-in-meningeal-fibroblasts-following-mouse-hepatitis-virus-infection
#13
Abhishek Bose, Rahul Basu, Mahua Maulik, Jayasri Das Sarma
Mouse hepatitis virus (MHV) infection causes meningoencephalitis by disrupting the neuro-glial and glial-pial homeostasis. Recent studies suggest that MHV infection alters gap junction protein connexin 43 (Cx43)-mediated intercellular communication in brain and primary cultured astrocytes. In addition to astrocytes, meningeal fibroblasts also express high levels of Cx43. Fibroblasts in the meninges together with the basal lamina and the astrocyte endfeet forms the glial limitans superficialis as part of the blood-brain barrier (BBB)...
January 11, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29322004/thoughts-modulate-the-expression-of-inflammatory-genes-and-may-improve-the-coronary-blood-flow-in-patients-after-a-myocardial-infarction
#14
Carlo Dal Lin, Mariela Marinova, Giorgio Rubino, Elisabetta Gola, Alessandra Brocca, Giorgia Pantano, Laura Brugnolo, Cristiano Sarais, Umberto Cucchini, Biancarosa Volpe, Chiara Cavalli, Maura Bellio, Emilia Fiorello, Sofia Scali, Mario Plebani, Sabino Iliceto, Francesco Tona
Background: Mental stress is one of the main risk factors for cardiovascular disease. Meditation and music listening are two techniques that are able to counteract it through the activation of specific brain areas, eliciting the so-called Relaxing Response (RR). Epidemiological evidence reveals that the RR practice has a beneficial prognostic impact on patients after myocardial infarction. We aimed to study the possible molecular mechanisms of RR underlying these findings. Methods: We enrolled 30 consecutive patients after myocardial infarction and 10 healthy controls...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29321652/innate-ifn-%C3%AE-ameliorates-experimental-autoimmune-encephalomyelitis-and-promotes-myeloid-expansion-and-pdl-1-expression
#15
Madeleine P J White, Gill Webster, Faith Leonard, Anne Camille La Flamme
The innate immune system plays a central role in the immune-mediated pathology of multiple sclerosis, and is a therapeutic target for progressive disease. Recently, it has been demonstrated that MIS416, a novel immunomodulatory microparticle that activates NOD-2 and TLR-9-signaling, has disease-modifying activity in multiple sclerosis models. This activity is dependent on innate IFN-γ; however, the precise immune regulatory mechanisms amplified by MIS416 have not previously been determined. Using the experimental autoimmune encephalomyelitis model, MIS416 treatment was associated with IFN-γ-dependant expansion of Treg number and increased suppressive function; however, these cells did not account for disease reduction...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318974/-understanding-the-role-of-hypoxia-inducible-factor-during-neurodegeneration-for-new-therapeutics-opportunities
#16
Amalia Merelli, Julio Cesar Garcia Rodriguez, Jaume Folch, Marcelo R Regueiro, Antoni Camins, Lazarowski Alberto
Neurodegeneration (NDG) is linked with the progressive loss of neural function with intellectual and/or motor impairment. Several diseases affecting older individuals, including Alzheimer's disease, Amyotrophic Lateral Sclerosis, Huntington's disease, Parkinson's disease, stroke, Multiple Sclerosis and many others, are the most relevant disorders associated with NDG. Since other pathologies such as refractory epilepsy, brain infections, or hereditary diseases such as "neurodegeneration with brain iron accumulation", also lead to chronic brain inflammation with loss of neural cells, NDG can be said to affect all ages...
January 10, 2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29318718/regional-cerebral-tissue-oxygen-saturation-changes-following-blood-transfusion-in-neuro-intensive-care-unit-patients%C3%A2-%C3%A2-a-pilot-observational-study
#17
R Muthuchellappan, N A Shaikh, R M Surve, U R S Ganne, M Philip
BACKGROUND: Although central venous oxygen saturation (ScvO2 ) is used to decide on red blood cell (RBC) transfusion, whether its improvement is associated with parallel improvement in cerebral oxygenation is not adequately studied. This study looked at changes in regional cerebral tissue oxygen saturation (rSO2 ) following RBC transfusion in neuro-intensive care unit (ICU) patients. METHODS: In this prospective observational pilot study, rSO2 was measured in adult neuro-ICU patients before RBC transfusion, at the end and at 6, 12, 18 and 24 h after RBC transfusion...
January 10, 2018: Transfusion Medicine
https://www.readbyqxmd.com/read/29307662/moringa-oleifera-phytochemicals-protect-the-brain-against-experimental-nicotine-induced-neurobehavioral-disturbances-and-cerebellar-degeneration
#18
Gabriel Olaiya Omotoso, Ismail Temitayo Gbadamosi, Olayemi Joseph Olajide, Shakirat Opeyemi Dada-Habeeb, Tolulope Timothy Arogundade, Emmanuel Olusola Yawson
Nicotine is a neuro-stimulant that has been implicated in the pathophysiology of many brain diseases. The need to prevent or alleviate the resulting dysfunction is therefore paramount, which has also given way to the use of medicinal plants in the management of brain conditions. This study was designed to determine the histomorphological and neurobehavioural changes in the cerebellum of Wistar rats following nicotine insult and how such injuries respond to Moringa intervention. Twenty-four adult male Wistar rats were divided into 4 groups...
January 4, 2018: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/29307441/critical-analysis-of-reference-studies-on-the-toxicokinetics-of-aluminum-based-adjuvants
#19
REVIEW
Jean-Daniel Masson, Guillemette Crépeaux, François-Jérôme Authier, Christopher Exley, Romain K Gherardi
We reviewed the three toxicokinetic reference studies commonly used to suggest that aluminum (Al)-based adjuvants are innocuous. A single experimental study was carried out using isotopic 26Al (Flarend et al., Vaccine, 1997). This study used aluminum salts resembling those used in vaccines but ignored adjuvant uptake by cells that was not fully documented at the time. It was conducted over a short period of time (28days) and used only two rabbits per adjuvant. At the endpoint, Al elimination in the urine accounted for 6% for Al hydroxide and 22% for Al phosphate, both results being incompatible with rapid elimination of vaccine-derived Al in urine...
December 28, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29304919/cranial-tumor-surgical-outcomes-at-a-high-volume-academic-referral-center
#20
Desmond A Brown, Benjamin T Himes, Brittny T Major, Benjamin F Mundell, Ravi Kumar, Bruce Kall, Fredric B Meyer, Michael J Link, Bruce E Pollock, John D Atkinson, Jamie J Van Gompel, W Richard Marsh, Giuseppe Lanzino, Mohamad Bydon, Ian F Parney
OBJECTIVE: To determine adverse event rates for adult cranial neuro-oncologic surgeries performed at a high-volume quaternary academic center and assess the impact of resident participation on perioperative complication rates. PATIENTS AND METHODS: All adult patients undergoing neurosurgical intervention for an intracranial neoplastic lesion between January 1, 2009, and December 31, 2013, were included. Cases were categorized as biopsy, extra-axial/skull base, intra-axial, or transsphenoidal...
January 2018: Mayo Clinic Proceedings
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