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https://www.readbyqxmd.com/read/27909008/trajectory-of-parvalbumin-cell-impairment-and-loss-of-cortical-inhibition-in-traumatic-brain-injury
#1
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/27908484/maintenance-fluid-therapy-isotonic-versus-hypotonic-solutions
#2
REVIEW
Bernie Hansen, Alessio Vigani
The goal of maintenance fluid therapy in small animals is to replace normal ongoing losses of water and salts when oral intake is withheld. Hospitalized dogs and cats may have multiple stimuli for antidiuretic hormone release that disrupt normal osmoregulation and predispose to water retention. Severe illness promotes retention of both sodium and water as edema. Commercially available fluids have electrolyte concentrations that are very different from dietary maintenance requirements, and potential consequences include development of hypoosmolality, edema, or both when excesses of water or sodium are administered...
November 28, 2016: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27905825/saliva-volatile-biomarkers-and-profiles
#3
Maciej Milanowski, Paweł Pomastowski, Tomasz Ligor, Bogusław Buszewski
Saliva is an aqueous fluid found in the oral cavity playing fundamental role in the preservation and maintenance of oral health. Apart from higher-molecular-weight constituents it contains volatile organic compounds (VOCs) that may origin from such sources as blood or be result of bacterial metabolism. They can also reach the oral fluid through dissolving of volatiles from breath and consumed foods. Some of them may serve as biomarkers of various diseases, such as dimethyl disulfide (halitosis), pyridine (periodontal disease) and trimethylamine (trimethylaminuria) or occupational exposure...
December 1, 2016: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/27904930/micrornas-in-bone-diseases
#4
REVIEW
L Gennari, S Bianciardi, D Merlotti
MicroRNAs are small, noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression, with an essential role in vertebrate development and different biological processes. This review highlights the recent advances in the function of miRNAs and their roles in bone remodeling and bone diseases. MicroRNAs (miRNAs) are a class of small (∼22 nt), noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression. They are essential for vertebrate development and play critical roles in different biological processes related to cell differentiation, activity, metabolism, and apoptosis...
November 30, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27904881/sfr1-a-tetrahymena-thermophila-sfi1-repeat-protein-modulates-the-production-of-cortical-row-basal-bodies
#5
Westley Heydeck, Alexander J Stemm-Wolf, Janin Knop, Christina C Poh, Mark Winey
Basal bodies are essential microtubule-based structures that template, anchor, and orient cilia at the cell surface. Cilia act primarily in the generation of directional fluid flow and sensory reception, both of which are utilized for a broad spectrum of cellular processes. Although basal bodies contribute to vital cell functions, the molecular contributors of their assembly and maintenance are poorly understood. Previous studies of the ciliate Tetrahymena thermophila revealed important roles for two centrin family members in basal body assembly, separation of new basal bodies, and stability...
November 2016: MSphere
https://www.readbyqxmd.com/read/27899724/working-memory-capacity-and-fluid-intelligence-maintenance-and-disengagement
#6
Zach Shipstead, Tyler L Harrison, Randall W Engle
Working memory capacity and fluid intelligence have been demonstrated to be strongly correlated traits. Typically, high working memory capacity is believed to facilitate reasoning through accurate maintenance of relevant information. In this article, we present a proposal reframing this issue, such that tests of working memory capacity and fluid intelligence are seen as measuring complementary processes that facilitate complex cognition. Respectively, these are the ability to maintain access to critical information and the ability to disengage from or block outdated information...
November 2016: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/27899683/validation-of-an-integrative-mathematical-model-of-dehydration-and-rehydration-in-virtual-humans
#7
W Andrew Pruett, John S Clemmer, Robert L Hester
Water homeostasis is one of the body's most critical tasks. Physical challenges to the body, including exercise and surgery, almost always coordinate with some change in water handling reflecting the changing needs of the body. Vasopressin is the most important hormone that contributes to short-term water homeostasis. By manipulating vascular tone and regulating water reabsorption in the collecting duct of the kidneys, vasopressin can mediate the retention or loss of fluids quickly. In this study, we validated HumMod, an integrative mathematical model of human physiology, against six different challenges to water homeostasis with special attention to the secretion of vasopressin and maintenance of electrolyte balance...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27896927/a-retrospective-review-of-anesthesia-and-perioperative-care-in-children-with-medium-chain-acyl-coa-dehydrogenase-deficiency
#8
Claire Allen, Russell Perkins, Bernd Schwahn
BACKGROUND: Medium-chain acyl-CoA dehydrogenase deficiency is the most common genetically determined disorder of mitochondrial fatty acid oxidation. Decompensation can result in hypoglycemia, seizures, coma, and death but may be prevented by ensuring glycogen stores do not become depleted. Perioperative care is of interest as surgery, fasting, and infection may all trigger decompensation and the safety of anesthetic agents has been questioned. Current guidelines from the British Inherited Metabolic Disease Group advise on administering fluid containing 10% glucose during the perioperative period...
November 29, 2016: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/27896266/in-vitro-bone-cell-models-impact-of-fluid-shear-stress-on-bone-formation
#9
REVIEW
Claudia Wittkowske, Gwendolen C Reilly, Damien Lacroix, Cecile M Perrault
This review describes the role of bone cells and their surrounding matrix in maintaining bone strength through the process of bone remodeling. Subsequently, this work focusses on how bone formation is guided by mechanical forces and fluid shear stress in particular. It has been demonstrated that mechanical stimulation is an important regulator of bone metabolism. Shear stress generated by interstitial fluid flow in the lacunar-canalicular network influences maintenance and healing of bone tissue. Fluid flow is primarily caused by compressive loading of bone as a result of physical activity...
2016: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/27895287/sudden-sensorineural-hearing-loss-is-there-a-connection-with-inner-ear-electrolytic-disorders-a-literature-review
#10
EDITORIAL
Andrea Ciorba, Virginia Corazzi, Chiara Bianchini, Claudia Aimoni, Henryk Skarzynski, Piotr Henryk Skarzynski, Stavros Hatzopoulos
Electrolytic disorders of the inner ear represent a model that could be implicated in partially explaining the pathogenesis of sudden sensorineural hearing loss (SSNHL). Different types of electrolytes and different inner-ear loci are involved in cochlear homeostasis physiologically, to ensure the maintenance of an ion-balanced cochlear environment allowing a normal hair cell function. It has been hypothesized that a sudden loss of endocochlear potential, due to a rapid disruption of the inner ear fluid osmolality, could be responsible for a deterioration of the hearing function caused by damaged hair cells...
December 2016: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/27894167/salinomycin-reduces-stemness-and-induces-apoptosis-on-human-ovarian-cancer-stem-cell
#11
Hyun Gyo Lee, So Jin Shin, Hye Won Chung, Sang Hoon Kwon, Soon Do Cha, Jin Eui Lee, Chi Heum Cho
OBJECTIVE: Cancer stem cells (CSCs) represent a subpopulation of undifferentiated tumorigenic cells thought to be responsible for tumor initiation, maintenance, drug resistance, and metastasis. The role of CSCs in drug resistance and relapse of cancers could significantly affect outcomes of ovarian cancer patient. Therefore, therapies that target CSCs could be a promising approach for ovarian cancer treatment. The antibiotic salinomycin has recently been shown to deplete CSCs. In this study, we evaluated the effect of salinomycin on ovarian cancer stem cells (OCSCs), both alone and in combination with paclitaxel (PTX)...
November 14, 2016: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/27886553/mechanical-stress-regulates-transport-in-a-compliant-3d-model-of-the-blood-brain-barrier
#12
Paul P Partyka, George A Godsey, John R Galie, Mary C Kosciuk, Nimish K Acharya, Robert G Nagele, Peter A Galie
Transport of fluid and solutes is tightly controlled within the brain, where vasculature exhibits a blood-brain barrier and there is no organized lymphatic network facilitating waste transport from the interstitial space. Here, using a compliant, three-dimensional co-culture model of the blood-brain barrier, we show that mechanical stimuli exerted by blood flow mediate both the permeability of the endothelial barrier and waste transport along the basement membrane. Application of both shear stress and cyclic strain facilitates tight junction formation in the endothelial monolayer, with and without the presence of astrocyte endfeet in the surrounding matrix...
November 17, 2016: Biomaterials
https://www.readbyqxmd.com/read/27882170/acute-encephalitis-with-refractory-repetitive-partial-seizures-a-case-report-and-literature-review
#13
Bin Zhang, Lin Wang
A male 46 year-old patient was admitted to the Emergency Intensive Care Unit of Qinghai Provincial People's Hospital (Xining, China) in December 2008 with complaints of a headache and fever that had lasted for three days. In addition, the patient had experienced two general convulsions accompanied with consciousness disorders for 7 h. Although the patient's clinical manifestations, laboratory tests and cerebrospinal fluid examinations were consistent with numerous features associated with acute encephalitis, the patient's clinical course was different to that of acute encephalitis, and the prognosis was poor...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881703/semaphorin-4c-protects-against-allergic-inflammation-requirement-of-regulatory-cd138-plasma-cells
#14
Di Xue, Gabriel N Kaufman, Marieme Dembele, Marianne Beland, Amir H Massoud, Barbara C Mindt, Ryan Fiter, Elizabeth D Fixman, James G Martin, Roland H Friedel, Maziar Divangahi, Jörg H Fritz, Bruce D Mazer
The regulatory properties of B cells have been studied in autoimmune diseases; however, their role in allergic diseases is poorly understood. We demonstrate that Semaphorin 4C (Sema4C), an axonal guidance molecule, plays a crucial role in B cell regulatory function. Mice deficient in Sema4C exhibited increased airway inflammation after allergen exposure, with massive eosinophilic lung infiltrates and increased Th2 cytokines. This phenotype was reproduced by mixed bone marrow chimeric mice with Sema4C deficient only in B cells, indicating that B lymphocytes were the key cells affected by the absence of Sema4C expression in allergic inflammation...
November 23, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27872138/micrornas-103-107-coordinately-regulate-macropinocytosis-and-autophagy
#15
Jong Kook Park, Han Peng, Julia Katsnelson, Wending Yang, Nihal Kaplan, Ying Dong, Joshua Z Rappoport, CongCong He, Robert M Lavker
Macropinocytosis, by which cells ingest large amounts of fluid, and autophagy, the lysosome-based catabolic process, involve vesicular biogenesis (early stage) and turnover (end stage). Much is known about early-stage events; however, our understanding of how the end stages of these processes are governed is incomplete. Here we demonstrate that the microRNA-103/107(miR-103/107) family, which is preferentially expressed in the stem cell-enriched limbal epithelium, coordinately regulates aspects of both these activities...
November 21, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27860181/methamphetamine-self-administration-reduces-alcohol-consumption-and-preference-in-alcohol-preferring-p-rats
#16
Madeline C Winkler, Emilee M Greager, Jacob Stafford, Ryan K Bachtell
Subclinical levels of polysubstance use are a prevalent and understudied phenomenon. Alcohol is a substance commonly co-used with other substances of other drug classes. These studies sought to determine the consumption effects of combining alcohol drinking and methamphetamine (MA) self-administration. Male alcohol-preferring P rats had continuous access to a two-bottle alcohol drinking procedure in the home cage. Control rats remained alcohol naïve. Rats were also surgically implanted with intra-jugular catheters and trained to self-administer saline (control) or MA in daily 2-hour sessions...
November 16, 2016: Addiction Biology
https://www.readbyqxmd.com/read/27848268/use-of-intravenous-fluids-solutions-a-narrative-review
#17
N El Gkotmi, C Kosmeri, T D Filippatos, M S Elisaf
OBJECTIVE: Intravenous fluids are broadly categorized into colloids and crystalloids. The aim of this review is to present under a clinical point of view the characteristics of intravenous fluids that make them more or less appropriate either for maintaining hydration when enteral intake is contraindicated or for treating hypovolemia. METHODS: We considered randomized trials and meta-analyses as well as narrative reviews evaluating the effects of colloids or crystalloids in patients with hypovolemia or as maintenance fluids published in PubMed and Cochrane databases...
November 16, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/27826207/psychosocial-predictors-of-nonadherence-to-medical-management-among-patients-on-maintenance-dialysis
#18
Fahad Dakheel Alosaimi, Mohammed Asiri, Saleh Alsuwayt, Tariq Alotaibi, Mohammed Bin Mugren, Abdulmalik Almufarrih, Saad Almodameg
BACKGROUND: A number of reports suggest a link between depression and nonadherence to recommended management for end-stage renal disease (ESRD) patients on maintenance dialysis. However, the relationship between nonadherence and other psychosocial factors have been inadequately examined. OBJECTIVES: To examine the prevalence of psychosocial factors including depression, anxiety, insecure attachment style, as well as cognitive impairment and their associations with adherence to recommended management of ESRD...
2016: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/27814606/regulation-and-function-of-renal-medullary-cyclooxygenase-2-during-high-salt-loading
#19
Tianxin Yang, Mi Liu
Prostaglandins (PGs) are important autocrine/paracrine regulators that contribute to sodium balance and blood pressure control. Along the nephron, the highest amount of PGE2 is found in the distal nephron, an important site for fine-tuning of urinary sodium and water excretion. Cylooxygenase-2 (COX-2) is abundantly expressed in the renal medulla and its expression along with urinary PGE2 excretion is highly induced by chronic salt loading. Factors involved in high salt-induced COX-2 expression in the renal medulla include the hypertonicity, fluid shear stress (FSS), and hypoxia-inducible factor-1 alpha (HIF-1 alpha)...
January 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/27813057/fluid-therapy-for-acute-bacterial-meningitis
#20
REVIEW
Ian K Maconochie, Soumyadeep Bhaumik
BACKGROUND: Acute bacterial meningitis remains a disease with high mortality and morbidity rates. However, with prompt and adequate antimicrobial and supportive treatment, the chances for survival have improved, especially among infants and children. Careful management of fluid and electrolyte balance is an important supportive therapy. Both over- and under-hydration are associated with adverse outcomes. This is the latest update of a review first published in 2005 and updated in 2008 and 2014...
November 4, 2016: Cochrane Database of Systematic Reviews
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