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https://www.readbyqxmd.com/read/27931151/regulation-of-mitochondrial-function-and-glutamatergic-system-are-the-target-of-guanosine-effect-in-traumatic-brain-injury
#1
Fernando Dobrachinski, Rogério da Rosa Gerbatin, Glaubia Sartori, Naiane Ferreira Marques, Ana Paula Pegoraro Zemolin, Luiz Fernando Almeida Silva, Jeferson Luis Franco, Luiz Fernando Freire Royes, Michele Rechia Fighera, Félix Alexandre Antunes Soares
Traumatic brain injury (TBI) is a highly complex multi-factorial disorder. Experimental trauma involves primary and secondary injury cascades that underlie delayed neuronal dysfunction and death. Mitochondrial dysfunction and glutamatergic excitotoxicity are the most important mechanisms of damage. In order to be successful, pharmacologic intervention requires a multifaceted approach. Guanosine (GUO) is known for its neuromodulator effects in different models of brain pathology, which regulates the glutamatergic system...
December 8, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27931146/d-cycloserine-restores-experience-dependent-neuroplasticity-after-tbi-in-the-developing-rat-brain
#2
Naomi Sulit Sta Maria, Maxine Lane Reger, Yan Cai, Mary Anne Tezheart Mercado Baquing, Floyd Buen, Aditya Ponnaluri, David Hovda, Neil G Harris, Christopher C Giza
Traumatic brain injury (TBI) in children can cause persisting cognitive and behavioral dysfunction and inevitably raises concerns about lost potential in these injured youths. Lateral fluid percussion injury (FPI) in weanling rats pathologically affects hippocampal NMDAR- and AMPAR-mediated glutamatergic neurotransmission subacutely, within the first post-injury week. FPI to weanling rats has also been shown to impair enriched-environment (EE) induced enhancement of Morris water maze (MWM) learning and memory in adulthood...
December 8, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27923323/mild-hypothermia-promotes-pericontusion-neuronal-sprouting-via-suppressing-socs3-expression-after-moderate-traumatic-brain-injury
#3
Cheng-Cheng Zhao, Chuan-Fang Wang, Wei-Ping Li, Yong Lin, Qi-Lin Tang, Jun-Feng Feng, Qing Mao, Guo-Yi Gao, Jiyao Jiang
Mild therapeutic hypothermia is a candidate for the treatment of traumatic brain injury (TBI). However, the role of mild hypothermia in neuronal sprouting after TBI remains obscure. We used a fluid percussion injury (FPI) model to assess the effect of mild hypothermia on pericontusion neuronal sprouting after TBI in rats. Male Sprague Dawley rats underwent FPI or sham surgery, and then followed by mild hypothermia treatment (33°C) or normothermia treatment (37°C) for 3 hours. All the rats were sacrificed at 7 days after FPI...
December 6, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27912253/sex-and-age-differences-in-epinephrine-mechanisms-and-outcomes-after-brain-injury
#4
William M Armstead, John Riley, Monica S Vavilala
Traumatic brain injury (TBI) is the leading cause of injury related death in children, with boys and children under 4 years having particularly poor outcomes. Cerebral autoregulation is often impaired after TBI, contributing to poor outcome. Cerebral perfusion pressure can be normalized by use of vasoactive agents. The c-Jun-terminal kinase (JNK) isoform of mitogen activated protein kinase (MAPK) produces hemodynamic impairment after TBI, but less is known about its role in histopathology. We investigated whether epinephrine (EPI) age and sex dependently protected cerebral autoregulation and limited histopathology after TBI and the role of JNK in that outcome...
December 2, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27909008/trajectory-of-parvalbumin-cell-impairment-and-loss-of-cortical-inhibition-in-traumatic-brain-injury
#5
Tsung-Hsun Hsieh, Henry Hing Cheong Lee, Mustafa Qadir Hameed, Alvaro Pascual-Leone, Takao K Hensch, Alexander Rotenberg
Many neuropsychiatric symptoms that follow traumatic brain injury (TBI), including mood disorders, sleep disturbance, chronic pain, and posttraumatic epilepsy (PTE) are attributable to compromised cortical inhibition. However, the temporal trajectory of cortical inhibition loss and its underlying mechanisms are not known. Using paired-pulse transcranial magnetic stimulation (ppTMS) and immunohistochemistry, we tracked functional and cellular changes of cortical inhibitory network elements after fluid-percussion injury (FPI) in rats...
November 30, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27904554/effect-of-helicobacter-pylori-eradication-on-insulin-resistance-among-prediabetic-patients-a-pilot-study-and-single-blind-randomized-controlled-clinical-trial
#6
Ali Kachuei, Masoud Amini, Vahid Sebghatollahi, Awat Feizi, Pooria Hamedani, Bijan Iraj
BACKGROUND: Type II diabetes mellitus (T2DM) is the prevalent type of diabetes in the world. Prediabetic patients are the most probable group to get diabetes. Several studies have mentioned the role of inflammation in the incidence of diabetes. The origin of inflammation can be infection such as Helicobacter pylori (HP) infection. This study was designed to explore the effect of HP eradication on insulin resistance. MATERIALS AND METHODS: This single-blind randomized controlled clinical trial was conducted in 2014-2015...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27900611/couples-discontinuation-of-fertility-treatments-a-longitudinal-study-on-demographic-biomedical-and-psychosocial-risk-factors
#7
Juliana Pedro, Maria Pedro Sobral, Joana Mesquita-Guimarães, Carla Leal, Maria E Costa, Mariana V Martins
PURPOSE: This study aims to explore the role of infertility-psychosocial variables on treatment discontinuation after controlling for demographic and biomedical variables in couples seeking reimbursed fertility treatment. METHODS: A prospective study was conducted in 139 couples seeking fertility treatment. Between February 2010 and March 2011, participants completed measures of anxiety (STAI-State), depression (BDI-II), infertility-stress (FPI), and infertility coping strategies (COMPI-CSS)...
November 29, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27876251/-food-protein-induced-enterocolitis-syndrome-a-case-report-of-diarrhea-with-hypovolemic-shock-and-methemoglobinemia
#8
L Genere, N Pecciarini, N Peretti, F Villard, A Lachaux
We report on the case of a young infant with chronic diarrhea that worsened and turned into hypovolemic shock with methemoglobinemia. We underline and discuss the main features of food protein-induced enterocolitis syndrome (FPIES). FPIES is a non-IgE-mediated food allergy involving tumor necrosis factor-alpha (TNF-α). Many triggering foods exist but cow's milk, as in the case reported herein, is one of the most frequent. It can start early or be delayed and start around the average age of 5 months. Symptoms are nonspecific with diarrhea and vomiting, but in the presence of methemoglobinemia, the diagnosis must be seriously considered...
November 18, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/27864928/classification-of-porcine-cranial-fracture-patterns-using-a-fracture-printing-interface
#9
Feng Wei, Serhat Selçuk Bucak, Jennifer M Vollner, Todd W Fenton, Anil K Jain, Roger C Haut
Distinguishing between accidental and abusive head trauma in children can be difficult, as there is a lack of baseline data for pediatric cranial fracture patterns. A porcine head model has recently been developed and utilized in a series of studies to investigate the effects of impact energy level, surface type, and constraint condition on cranial fracture patterns. In the current study, an automated pattern recognition method, or a fracture printing interface (FPI), was developed to classify cranial fracture patterns that were associated with different impact scenarios documented in previous experiments...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27857404/influence-of-fiber-bending-on-wavelength-demodulation-of-fiber-optic-fabry-perot-interferometric-sensors
#10
Guigen Liu, Qiwen Sheng, Weilin Hou, Ming Han
In practical applications of fiber optic sensors based on Fabry-Perot interferometers (FPIs), the lead-in optical fiber often experiences dynamic or static bending due to environmental perturbations or limited installation space. Bending introduces wavelength-dependent losses to the sensors, which can cause erroneous readings for sensors based on wavelength demodulation interrogation. Here, we investigate the bending-induced wavelength shift (BIWS) to sensors based on FPIs. Partially explicit expressions of BIWSs for the reflection fringe peaks and valleys have been derived for sensors based on low-finesse FPI...
November 14, 2016: Optics Express
https://www.readbyqxmd.com/read/27853685/what-s-preventing-us-to-get-more-attraction-the-fear-of-aesthetic-surgery
#11
Mona Leitermann, Klaus Hoffmann, Erich Kasten
BACKGROUND: Nowadays, with the help of cosmetic surgery almost every woman and man can achieve a highly attractive appearance. The question is, why so many people do not take advantage of these opportunities? This pilot-study investigates individual attitudes of people towards aesthetic plastic surgery. METHODS: A questionnaire was developed which combined self-developed items for a measurement of attitudes towards plastic surgery. In addition, items of the "Freiburger Personality Inventory" (FPI-R) were used...
September 2016: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/27843068/cow-s-milk-protein-is-often-tolerated-by-children-with-oat-induced-fpies
#12
Madhavi Kapoor, J Andrew Bird
No abstract text is available yet for this article.
November 11, 2016: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/27832588/secreted-effectors-encoded-within-and-outside-of-the-francisella-pathogenicity-island-promote-intramacrophage-growth
#13
Aria Eshraghi, Jungyun Kim, Alexandra C Walls, Hannah E Ledvina, Cheryl N Miller, Kathryn M Ramsey, John C Whitney, Matthew C Radey, S Brook Peterson, Brittany R Ruhland, Bao Q Tran, Young Ah Goo, David R Goodlett, Simon L Dove, Jean Celli, David Veesler, Joseph D Mougous
The intracellular bacterial pathogen Francisella tularensis causes tularemia, a zoonosis that can be fatal. The type VI secretion system (T6SS) encoded by the Francisella pathogenicity island (FPI) is critical for the virulence of this organism. Existing studies suggest that the complete repertoire of T6SS effectors delivered to host cells is encoded by the FPI. Using a proteome-wide approach, we discovered that the FPI-encoded T6SS exports at least three effectors encoded outside of the island. These proteins share features with virulence determinants of other pathogens, and we provide evidence that they can contribute to intramacrophage growth...
November 9, 2016: Cell Host & Microbe
https://www.readbyqxmd.com/read/27830989/a-mutagenesis-based-approach-identifies-amino-acids-in-the-n-terminal-part-of-francisella-tularensis-igle-that-critically-control-type-vi-system-mediated-secretion
#14
Jeanette E Bröms, Lena Meyer, Anders Sjöstedt
The Gram-negative bacterium Francisella tularensis is the etiological agent of the zoonotic disease tularemia. Its life cycle is characterized by an ability to survive within phagocytic cells through phagosomal escape and replication in the cytosol, ultimately causing inflammasome activation and host cell death. Required for these processes is the Francisella pathogenicity island (FPI), which encodes a Type VI secretion system (T6SS) that is active during intracellular infection. In this study, we analyzed the role of the FPI-component IglE, a lipoprotein which we previously have shown to be secreted in a T6SS-dependent manner...
November 10, 2016: Virulence
https://www.readbyqxmd.com/read/27830534/guanosine-protects-against-traumatic-brain-injury-induced-functional-impairments-and-neuronal-loss-by-modulating-excitotoxicity-mitochondrial-dysfunction-and-inflammation
#15
Rogério da Rosa Gerbatin, Gustavo Cassol, Fernando Dobrachinski, Ana Paula O Ferreira, Caroline B Quines, Iuri D Della Pace, Guilherme L Busanello, Jessié M Gutierres, Cristina W Nogueira, Mauro S Oliveira, Félix A Soares, Vera M Morsch, Michele R Fighera, Luiz Fernando F Royes
Traumatic brain injury (TBI) is one of the most common types of brain injuries that cause death or persistent neurological disturbances in survivors. Most of the promising experimental drugs were not effective in clinical trials; therefore, the development of TBI drugs represents a huge unmet need. Guanosine, an endogenous neuroprotective nucleoside, has not been evaluated in TBI to the best of our knowledge. Therefore, the present study evaluated the effect of guanosine on TBI-induced neurological damage. Our findings showed that a single dose of guanosine (7...
November 9, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27822741/isolated-brain-trauma-in-cats-triggers-rapid-onset-of-hypovolemia
#16
Peter Bentzer, Per-Olof Grände
BACKGROUND: Hemodynamic instability responsive to fluid resuscitation is common after a traumatic brain injury (TBI), also in the absence of systemic hemorrhage. The present study tests if an isolated severe TBI induces a decrease in plasma volume (PV). METHODS: The study was performed in three groups of anesthetized and tracheostomized male cats (n = 21). In one group (n = 8), the cats were prepared with a cranial borehole (10 mm i.d) used to expose the brain to a fluid percussion brain injury (FPI) (1...
November 7, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27805702/high-resolution-large-dynamic-range-fiber-optic-thermometer-with-cascaded-fabry-perot-cavities
#17
Guigen Liu, Qiwen Sheng, Weilin Hou, Ming Han
The paradox between a large dynamic range and a high resolution commonly exists in nearly all kinds of sensors. Here, we propose a fiber-optic thermometer based on dual Fabry-Perot interferometers (FPIs) made from the same material (silicon), but with different cavity lengths, which enables unambiguous recognition of the dense fringes associated with the thick FPI over the free-spectral range determined by the thin FPI. Therefore, the sensor combines the large dynamic range of the thin FPI and the high resolution of the thick FPI...
November 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27801825/a-clinical-trial-about-a-food-supplement-containing-%C3%AE-lipoic-acid-on-oxidative-stress-markers-in-type-2-diabetic-patients
#18
Giuseppe Derosa, Angela D'Angelo, Davide Romano, Pamela Maffioli
The aim of this study was to evaluate the effect of a food supplement containing α-lipoic acid and of a placebo on glyco-metabolic control and on oxidative stress markers in type 2 diabetics. We randomized 105 diabetics to either a supplementation containing 600 mg of α-lipoic acid, 165 mg of L-carnosin, 7.5 mg of zinc, and vitamins of group B, or a placebo, for three months. We evaluated body mass index, fasting plasma glucose (FPG), post-prandial-glucose (PPG), glycated hemoglobin (HbA1c), fasting plasma insulin (FPI), HOMA-index (HOMA-IR), lipid profile, high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA)...
October 28, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27772540/altered-hippocampal-neurogenesis-during-the-first-7-days-after-a-fluid-percussion-traumatic-brain-injury
#19
Lee A Shapiro
Traumatic brain injury (TBI) is a devastating disorder, causing negative outcomes in millions of people each year. Despite the alarming numbers of brain injuries, and the long-term detrimental outcomes that can be associate with TBI, treatment options are lacking. Extensive investigation is underway, in hopes of identifying effective treatment strategies. Among the most state-of-the-art strategies is cell replacement therapy. TBI is a seemingly good candidate for cell replacement studies, because there is often neuron loss...
October 21, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27746815/disproportionately-elevated-proinsulin-levels-as-an-early-indicator-of-%C3%AE-cell-dysfunction-in-nondiabetic-offspring-of-chinese-diabetic-patients
#20
Ming Li, Dan Feng, Kui Zhang, Shan Gao, Juming Lu
Objective. To study the characteristics of β-cell dysfunction and insulin resistance (IR) in the first-degree relatives (FDRs) of T2DM in Chinese population and to examine the usefulness of proinsulin (PI) for evaluating β-cell dysfunction. Methods. 229 subjects of nondiabetic FDRs, 71 newly diagnosed T2DM, and 114 with normal glucose tolerance (NGT) but not FDRs (NGT-non-FDRs) were verified by a 2-hour oral glucose tolerance test. Specific insulin (SI) and PI were measured by highly sensitive ELISA. Results...
2016: International Journal of Endocrinology
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