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https://www.readbyqxmd.com/read/29341883/title-brain-region-specific-molecular-responses-to-maternal-separation-and-social-defeat-stress-in-mice
#1
Benjamin D Sachs, Ha L Tran, Emily Folse, Marc G Caron
The association between stress and mental illness has been well documented, but the molecular consequences of repeated exposure to stress have not been completely identified. The present study sought to elucidate the combinatorial effects of early life maternal separation stress and adult social defeat stress on alterations in signal transduction and gene expression that have been previously implicated in susceptibility to psychosocial stress. Molecular analyses were performed in the prelimbic/infralimbic cortex, amygdala, and nucleus accumbens, three brain regions that have been suggested to play critical roles in determining stress responses...
January 13, 2018: Neuroscience
https://www.readbyqxmd.com/read/29340736/risk-factors-for-early-infection-following-hemiarthroplasty-in-elderly-patients-with-a-femoral-neck-fracture
#2
Dirk Zajonz, Alexander Brand, Christian Lycke, Orkun Özkurtul, Jan Theopold, Ulrich J A Spiegl, Andreas Roth, Christoph Josten, Johannes K M Fakler
PURPOSE: Periprosthetic joint infections (PJI) after hemiarthroplasty for geriatric femoral neck fractures are a devastating complication that results in serious morbidity and increased mortality. Identifying risk factors associated with early infection after HA for hip fractures may offer an opportunity to address and prevent this complication in many patients. The aim of this study was to evaluate preoperative risk factors for early PJI after HA in hip fracture patients. METHODS: From January 2010 to December 2015, 312 femoral neck fractures (AO/OTA 31-B) in 305 patients were included in this single-center, retrospective study...
January 16, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29339763/glucocorticoid-receptor-gr%C3%AE-regulates-glucocorticoid-induced-ocular-hypertension-in-mice
#3
Gaurang C Patel, Yang Liu, J Cameron Millar, Abbot F Clark
Prolonged glucocorticoid (GC) therapy can cause GC-induced ocular hypertension (OHT), which if left untreated progresses to iatrogenic glaucoma and permanent vision loss. The alternatively spliced isoform of glucocorticoid receptor GRβ acts as dominant negative regulator of GR activity, and it has been shown that overexpressing GRβ in trabecular meshwork (TM) cells inhibits GC-induced glaucomatous damage in TM cells. The purpose of this study was to use viral vectors to selectively overexpress the GRβ isoform in the TM of mouse eyes treated with GCs, to precisely dissect the role of GRβ in regulating steroid responsiveness...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339422/the-role-of-angiopoietin-like-protein-4-in-phenylephrine-induced-cardiomyocyte-hypertrophy
#4
Yu Sun, Yi Li, Chen Liu, Ruicong Xue, Bin Dong, Huiling Huang, Longyun Peng, Jun Liu, Yugang Dong
Angiopoietin-like protein 4 (ANGPTL4) is a multifunctional secreted protein that can be induced by fasting, hypoxia and glucocorticoids. ANGPTL4 has been associated with a variety of diseases, however, the role of ANGPTL4 in cardiac hypertrophy remains poorly understood. In our study, we aimed to explore the effect of ANGPTL4 on phenylephrine (PE)-induced cardiomyocyte hypertrophy. Our results showed that knockdown of ANGPTL4 expression significantly exacerbated cardiomyocyte hypertrophy, as demonstrated by increased hypertrophic marker expression, including ANP and cell surface area...
January 16, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29339091/an-energetic-view-of-stress-focus-on-mitochondria
#5
REVIEW
Martin Picard, Bruce S McEwen, Elissa Epel, Carmen Sandi
Energy is required to sustain life and enable stress adaptation. At the cellular level, energy is largely derived from mitochondria - unique multifunctional organelles with their own genome. Four main elements connect mitochondria to stress: 1) Energy is required at the molecular, (epi)genetic, cellular, organ, and systemic levels to sustain components of stress responses; 2) Glucocorticoids and other steroid hormones are produced and metabolized by mitochondria; 3) Reciprocally, mitochondria functionally respond to neuroendocrine and metabolic stress mediators; and 4) Experimentally manipulating mitochondrial functions alters physiological and behavioral responses to psychological stress...
January 12, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29338843/current-status-of-animal-models-of-posttraumatic-stress-disorder-behavioral-and-biological-phenotypes-and-future-challenges-in-improving-translation
#6
REVIEW
Jessica Deslauriers, Mate Toth, Andre Der-Avakian, Victoria B Risbrough
Increasing predictability of animal models of posttraumatic stress disorder (PTSD) has required active collaboration between clinical and preclinical scientists. Modeling PTSD is challenging, as it is a heterogeneous disorder with ≥20 symptoms. Clinical research increasingly utilizes objective biological measures (e.g., imaging, peripheral biomarkers) or nonverbal behaviors and/or physiological responses to complement verbally reported symptoms. This shift toward more-objectively measurable phenotypes enables refinement of current animal models of PTSD, and it supports the incorporation of homologous measures across species...
November 20, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29337990/clustering-gene-expression-time-series-data-using-an-infinite-gaussian-process-mixture-model
#7
Ian C McDowell, Dinesh Manandhar, Christopher M Vockley, Amy K Schmid, Timothy E Reddy, Barbara E Engelhardt
Transcriptome-wide time series expression profiling is used to characterize the cellular response to environmental perturbations. The first step to analyzing transcriptional response data is often to cluster genes with similar responses. Here, we present a nonparametric model-based method, Dirichlet process Gaussian process mixture model (DPGP), which jointly models cluster number with a Dirichlet process and temporal dependencies with Gaussian processes. We demonstrate the accuracy of DPGP in comparison to state-of-the-art approaches using hundreds of simulated data sets...
January 16, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29337441/-allergology-and-clinical-immunology
#8
Yann Coattrenec, Thomas Harr, Carlo Chizzolini, Peter Jandus
Hereditary angioedema (HA) is a disabling and potentially fatal condition. The management of HA includes treatment of acute attacks, short-term prophylaxis to prevent an attack, and long-term prophylaxis to minimize the frequency and severity of recurrent attacks. In this article, we will present new therapeutic alternatives for long term prophylaxis. Glucocorticoids (GC) usage leads to a number of severe side-effects. In giant cell arteritis, the use of tocilizumab in conjunction with low doses of GC reduces the number of relapses...
January 10, 2018: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29337227/juvenile-social-defeat-stress-exposure-persistently-impairs-social-behaviors-and-neurogenesis
#9
Akihiro Mouri, Mayu Ukai, Mizuki Uchida, Sho Hasegawa, Masayuki Taniguchi, Takahiro Ito, Hirotake Hida, Akira Yoshimi, Kiyofumi Yamada, Shohko Kunimoto, Norio Ozaki, Toshitaka Nabeshima, Yukihiro Noda
Adverse juvenile experiences, including physical abuse, often have negative health consequences later in life. We investigated the influence of social defeat stress exposure as juveniles on neuropsychological behaviors, and the causal role of glucocorticoids in abnormal behaviors and impairment of neurogenesis in mice exposed to the stress. The juvenile (24-day-old) and adult (70-day-old) male C57BL/6J mice were exposed to social defeat stress induced by an aggressive ICR mouse. Social defeat stress exposure as juveniles, even for 1 day, induced persistent social avoidance to the unfamiliar ICR mouse in the social interaction test, but that was not observed in mice exposed to the stress as adults...
January 11, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29337149/just-the-frax-management-of-glucocorticoid-induced-osteoporosis
#10
Beth Wallace, Kenneth G Saag, Jeffrey R Curtis, Akbar K Waljee
No abstract text is available yet for this article.
January 11, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29335791/behavior-of-c-reactive-protein-in-association-with-surgery-of-facial-fracture-and-the-influence-of-dexamethasone
#11
Johanna Snäll, Jyrki Törnwall, Anna Liisa Suominen, Hanna Thorén
PURPOSE: To clarify pre- and postoperative C-reactive protein (CRP) levels in patients with facial fractures and to investigate the influence of perioperatively administered dexamethasone on postoperative CRP levels. PATIENTS AND METHODS: Facial fracture patients were randomized to receive perioperatively a total dose of 30 mg of dexamethasone (Oradexon®), whereas patients in the control group received no glucocorticoid. The analysis included patients who had CRP measured pre- and postoperatively...
January 16, 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29335423/evaluation-of-the-effects-of-space-allowance-on-measures-of-animal-welfare-in-laboratory-mice
#12
Jeremy D Bailoo, Eimear Murphy, Justin A Varholick, Janja Novak, Rupert Palme, Hanno Würbel
We studied how space allowance affects measures of animal welfare in mice by systematically varying group size and cage type across three levels each in both males and females of two strains of mice (C57BL/6ByJ and BALB/cByJ; n = 216 cages, a total of 1152 mice). This allowed us to disentangle the effects of total floor area, group size, stocking density, and individual space allocation on a broad range of measures of welfare, including growth (food and water intake, body mass); stress physiology (glucocorticoid metabolites in faecal boli); emotionality (open field behaviour); brain function (recurrent perseveration in a two-choice guessing task); and home-cage behaviour (activity, stereotypic behaviour)...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335343/association-between-glucocorticoid-exposure-and-healthcare-expenditures-for-potential-glucocorticoid-related-adverse-events-in-patients-with-rheumatoid-arthritis
#13
Jennie H Best, Amanda M Kong, Gregory M Lenhart, Khaled Sarsour, Marni Stott-Miller, Yong Hwang
OBJECTIVE: Oral glucocorticoid (OGC) use for rheumatoid arthritis (RA) is debated because of the adverse event (AE) profile of OGC. We evaluated the associations between cumulative doses of OGC and potential OGC-related AE, and quantified the associated healthcare expenditures. METHODS: Using the MarketScan databases, patients ≥ 18 years old who have RA with continuous enrollment from January 1 to December 31, 2012 (baseline), and from January 1 to December 31, 2013 (evaluation period), were identified...
January 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29334786/acute-on-chronic-liver-failure-in-chronic-hepatitis-b-an-update
#14
Rui-Hong Zhao, Yu Shi, Hong Zhao, Wei Wu, Ji-Fang Sheng
Acute-on-chronic liver failure is a common pattern of end-stage liver disease in clinical practice and occurs frequently in patients with chronic hepatitis B or HBV-related cirrhosis. New progress in recent years leads to a better understanding of this disease. Areas covered: This review updates the current comprehensive knowledge about HBV-ACLF from epidemiological studies, experimental studies, and clinical studies and provide new insights into the definition, diagnostic criteria, epidemiology, nature history, pathogenesis, treatment and prognostication of HBV-ACLF...
January 16, 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29334750/-remission-of-steroid-resistant-stills-disease-treated-with-anakinra-evidenced-by-fdg-pet-ct-examination-case-report
#15
Zdeněk Adam, Jana Skřičková, Milan Krtička, Zdeněk Řehák, Renata Koukalová, Andrea Šprláková, Marta Krejčí, Luděk Pour, Zdenka Adamová, Eva Pourová, Zdeněk Král
After elimination of infectious causes, neoplastic causes and the systemic autoimmune disease of connective tissue, a patient with high fevers over 39 °C was diagnosed with Stills disease. High doses of prednisone led to resolution of symptoms, however after reducing the doses of prednisone to 15 mg, high fevers over 39 °C returned, as well as joint pains. The high doses of prednisone led to decompensation of diabetes mellitus even with 4 daily insulin dosages. Therefore it was proceeded to regular subcutaneous administration of anakinra once a day...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29334747/-drug-induced-tendon-injury
#16
Štefan Alušík, Zoltán Paluch
Tendon injury belongs to the less known side effects of some drugs, reported until recently only for glucocorticoids and fluoroquinolones. To date, some other classes of drugs such as statins, aromatase inhibitors, anabolic steroids, potentially causing tendon injury, have been added to the list. The authors discuss the most common clinical presentations, diagnosis, and management as well as latest experimental data regarding this issue. The most often, the Achilles tendon is affected, however, nearly every tendon of the entire body may be affected...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29334337/durable-responses-in-refractory-autoimmune-hemolytic-anemia-with-alemtuzumab
#17
Renee K McAlister, Mahsa S Talbott, Nishitha M Reddy
Autoimmune hemolytic anemia occurs due to an interaction of IgG antibodies with protein antigens expressed on red blood corpuscles. Glucocorticoids are the mainstay of treatment for autoimmune hemolytic anemia. For patients not responding to initial therapy, other agents such as rituximab, immunosuppressive therapy, or splenectomy are considered. When refractory to these treatment options, alemtuzumab is an alternative agent. However, long-term outcomes of patients supporting its use are lacking. We present three patients with refractory autoimmune hemolytic anemia treated with alemtuzumab...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29332823/a-combination-of-computational-experimental-study-on-metal-organic-frameworks-mil-53-al-as-sorbent-for-simultaneous-determination-of-estrogens-and-glucocorticoids-in-water-and-urine-samples-by-dispersive-micro-solid-phase-extraction-coupled-to-uplc-ms-ms
#18
Guihua Gao, Sijia Li, Shuo Li, Yudan Wang, Pan Zhao, Xiangyu Zhang, Xiaohong Hou
In this work, computational and experimental methods were used to study the adsorption of estrogens and glucocorticoids on metal-organic frameworks (MOFs). Computer-aided molecular simulation was applied to predict the adsorption of eight analytes on four MOFs (MIL-101(Cr), MIL-100(Fe), MIL-53(Al), and UiO-66(Zr)) by examining molecular interactions and calculating free binding energies. Subsequently, the four water-stable MOFs were synthesized and evaluated as adsorbents for the target hormones in aqueous solution...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29332515/vasoplegia-in-patients-with-sepsis-and-septic-shock-pathways-and-mechanisms
#19
A-M Burgdorff, M Bucher, J Schumann
Sepsis is one of the most frequent causes of death among patients in intensive care units. Many therapeutic strategies have been assessed without the desired success rates. A key risk factor for death is hypotension due to vasodilatation with vascular hyposensitivity. However, the pathways underlying this process remain unclear. Endotoxemia induces inflammatory mediators, and this is followed by vasoplegia and decreased cardiac contractility. Although inhibition of these mediators diminishes mortality rates in animal models, this phenomenon has not been confirmed in humans...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29332199/analysis-of-the-data-on-pregnancy-and-lactation-provided-by-patient-information-leaflets-of-anti-rheumatic-drugs-in-argentina
#20
Miguel Ormaza Sabando, Maira Arias Saavedra, Gabriel Sequeira, Eduardo Kerzberg
To analyse the level of consistency and updating of the information on pregnancy and lactation provided by patient information leaflets (PILs) of the antirheumatic drugs approved in Argentina. Inconsistencies between the 2016 EULAR Task Force recommendations on the use of anti-rheumatic drugs during pregnancy and lactation and the information provided by PILs of the same drugs approved in Argentina were analysed along with inconsistencies within the PILs of different registered trademarks of these drugs. Eighty-eight PILs of 32 drugs were analysed...
January 13, 2018: Rheumatology International
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