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https://www.readbyqxmd.com/read/28644831/inflammatory-and-vascular-placental-lesions-are-associated-with-neonatal-amplitude-integrated-eeg-recording-in-early-premature-neonates
#1
Dorit Paz-Levy, Letizia Schreiber, Offer Erez, Sharon Goshen, Justin Richardson, VIadimir Drunov, Orna Staretz Chacham, Eilon Shany
INTRODUCTION: Placental histologic examination can assist in revealing the mechanism leading to preterm birth. Accumulating evidence suggests an association between intrauterine pathological processes, morbidity and mortality of premature infants, and their long term outcome. Neonatal brain activity is increasingly monitored in neonatal intensive care units by amplitude integrated EEG (aEEG) and indices of background activity and sleep cycling patterns were correlated with long term outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28615430/characterization-of-patients-with-longstanding-idiopathic-rem-sleep-behavior-disorder
#2
Alex Iranzo, Ambra Stefani, Monica Serradell, Maria Jose Martí, Francisco Lomeña, Philipp Mahlknecht, Heike Stockner, Carles Gaig, Ana Fernández-Arcos, Werner Poewe, Eduard Tolosa, Birgit Högl, Joan Santamaria
OBJECTIVE: To evaluate the presence of prodromal markers of Parkinson disease (PD) in patients with longstanding idiopathic REM sleep behavior disorder (IRBD), a small subgroup of individuals with IRBD with long-term follow-up thought not to be at risk of developing PD. METHODS: Demographic, clinical, and neuroimaging markers of PD were evaluated in 20 patients with polysomnographic-confirmed long-standing IRBD and in 32 matched controls. RESULTS: Patients were 16 men and 4 women with mean age of 72...
June 14, 2017: Neurology
https://www.readbyqxmd.com/read/28584132/transposon-mutagenesis-identifies-chromatin-modifiers-cooperating-with-ras-in-thyroid-tumorigenesis-and-detects-atxn7-as-a-cancer-gene
#3
Cristina Montero-Conde, Luis J Leandro-Garcia, Xu Chen, Gisele Oler, Sergio Ruiz-Llorente, Mabel Ryder, Iñigo Landa, Francisco Sanchez-Vega, Konnor La, Ronald A Ghossein, Dean F Bajorin, Jeffrey A Knauf, Jesse D Riordan, Adam J Dupuy, James A Fagin
Oncogenic RAS mutations are present in 15-30% of thyroid carcinomas. Endogenous expression of mutant Ras is insufficient to initiate thyroid tumorigenesis in murine models, indicating that additional genetic alterations are required. We used Sleeping Beauty (SB) transposon mutagenesis to identify events that cooperate with Hras(G12V) in thyroid tumor development. Random genomic integration of SB transposons primarily generated loss-of-function events that significantly increased thyroid tumor penetrance in Tpo-Cre/homozygous FR-Hras(G12V) mice...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28502444/nonalcoholic-fatty-liver-disease-in-children-hepatic-and-extrahepatic-complications
#4
REVIEW
Praveen Kumar Conjeevaram Selvakumar, Mohammad Nasser Kabbany, Valerio Nobili, Naim Alkhouri
Nonalcoholic fatty liver disease (NAFLD) is considered the hepatic manifestation of metabolic syndrome and has become the most common form of chronic liver disease in children and adolescents. The histologic spectrum of NAFLD is broad ranging, from the relatively benign form of simple steatosis to the aggressive form of nonalcoholic steatohepatitis, eventually leading to fibrosis and cirrhosis. NAFLD has also been recognized as an independent risk factor for extrahepatic complications, such as cardiovascular disease, type 2 diabetes mellitus, sleep disorders, and osteoporosis...
June 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/28456608/chronic-intermittent-hypoxia-worsens-bleomycin-induced-lung-fibrosis-in-rats
#5
Rudolf K Braun, Oleg Broytman, Felix M Braun, Jacqueline A Brinkman, Andrew Clithero, Dhruvangkumar Modi, David F Pegelow, Marlowe Eldridge, Mihaela Teodorescu
Obstructive sleep apnea (OSA) has been linked to increased mortality in pulmonary fibrosis. Its key feature, chronic intermittent hypoxia (CIH), can lead to oxidative stress and inflammation, known to lead to fibrotic pathology in other organs. We tested the effects of CIH in an animal model of bleomycin-induced lung fibrosis. Sprague Dawley rats were instilled intratracheally with bleomycin (Blm) or saline (Sal), and exposed to CIH or normal air (Norm) for 9 or 30 days. Pulmonary function was tested and lungs were harvested for histological and molecular analyses...
April 27, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28445233/preclinical-models-for-translational-sarcoma-research
#6
Rainer Hamacher, Sebastian Bauer
PURPOSE OF REVIEW: Sarcoma is a basket term for mesenchymal tumors for which more than 75 genetically and histologically distinct subtypes are recognized. Therapeutic progress has largely been achieved with classical chemotherapeutic drugs that were tested in empirical clinical trials. However, outcome in metastatic patients remains poor and with few exceptions numerous trials have failed or only provided limited improvement in recent years. RECENT FINDINGS: Given the genomic heterogeneity, preclinical model systems will be indispensable to identify new molecular targets and to prioritize drugs and drug combinations...
July 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/28429245/assessing-pruritus-in-hidradenitis-suppurativa-a-cross-sectional-study
#7
Allard R J V Vossen, Annelien Schoenmakers, Kelsey R van Straalen, Errol P Prens, Hessel H van der Zee
BACKGROUND: Pruritus is still a forgotten aspect of hidradenitis suppurativa (HS) and, to date, has never been adequately studied. OBJECTIVE: The aim of this study was to determine the prevalence, and explore the characteristics, of pruritus in a well-defined cohort of HS patients. SETTING: An academic hospital-based cross-sectional study in The Netherlands. METHODS: A numerical rating scale (NRS, 0-10) was used to determine the prevalence of HS-related itch (NRS score ≥3)...
April 20, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28362813/a-novel-adjustable-automated-system-for-inducing-chronic-intermittent-hypoxia-in-mice
#8
Dora Polšek, Marcel Bago, Marija Živaljić, Ivana Rosenzweig, Zsombor Lacza, Srećko Gajović
BACKGROUND: Sleep apnea is a chronic, widely underdiagnosed condition characterized by disruption of sleep architecture and intermittent hypoxia due to short cessations of breathing. It is a major independent risk factor for myocardial infarction, congestive heart failure and stroke as well as one of the rare modifiable risk factors for Alzheimer's Dementia. Reliable animal disease models are needed to understand the link between sleep apnea and the various clinically linked disorders...
2017: PloS One
https://www.readbyqxmd.com/read/28336172/curcuma-longa-linn-extract-and-curcumin-protect-cyp-2e1-enzymatic-activity-against-mercuric-chloride-induced-hepatotoxicity-and-oxidative-stress-a-protective-approach
#9
Deepmala Joshi, Deepak Kumar Mittal, Sangeeta Shukla, Sunil Kumar Srivastav, Vaibhav A Dixit
The present investigation has been conducted to evaluate the therapeutic potential of Curcuma longa (200mgkg(-1), po) and curcumin (80mgkg(-1), po) for their hepatoprotective efficacy against mercuric chloride (HgCl2: 12μmolkg(-1), ip; once only) hepatotoxicity. The HgCl2 administration altered various biochemical parameters, including transaminases, alkaline phosphatase, lactate dehydrogenase, bilirubin, gamma-glutamyl transferase, triglycerides and cholesterol contents with a concomitant decline in protein and albumin concentration in serum which were restored towards control by therapy of Curcuma longa or curcumin...
March 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28328536/neurotransmission-systems-in-parkinson-s-disease
#10
Hossein Sanjari Moghaddam, Ameneh Zare-Shahabadi, Farzaneh Rahmani, Nima Rezaei
Parkinson's disease (PD) is histologically characterized by the accumulation of α-synuclein particles, known as Lewy bodies. The second most common neurodegenerative disorder, PD is widely known because of the typical motor manifestations of active tremor, rigidity, and postural instability, while several prodromal non-motor symptoms including REM sleep behavior disorders, depression, autonomic disturbances, and cognitive decline are being more extensively recognized. Motor symptoms most commonly arise from synucleinopathy of nigrostriatal pathway...
March 22, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28316781/dyspnea-and-dysphagia-associated-to-hypopharyngeal-fibrolipoma-a-case-report
#11
Marco A Mendez Saenz, Vicente J Villagomez Ortiz, Mario Jesús Jr Villegas González, Baltazar Gonzalez Andrade, Miguel Angel Liñan Arce, German A Soto-Galindo, José Luis Treviño González
Fibrolipomas are benign lesions conformed by fat and connective tissue, classified as histologic variants of lipomas. They are rarely located in the head and neck and represent less than 0.6% of the benign tumors of the larynx and hypopharynx. Their clinical presentation depends on its location and size. We present the case of a 51-year-old male patient who reported progressive dyspnea, dysphagia and obstructive sleep symptoms with a duration of 3 months, without apparent cause. A pharyngolaryngeal fiberoptic endoscopy showed a smooth, rounded mass in the posterior wall of the hypopharynx, partially obstructing the laryngeal vestibule, creating a valve effect...
April 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28177712/investigating-human-skeletal-muscle-physiology-with-unilateral-exercise-models-when-one-limb-is-more-powerful-than-two
#12
Martin J MacInnis, Chris McGlory, Martin J Gibala, Stuart M Phillips
Direct sampling of human skeletal muscle using the needle biopsy technique can facilitate insight into the biochemical and histological responses resulting from changes in exercise or feeding. However, the muscle biopsy procedure is invasive, and analyses are often expensive, which places pragmatic restraints on sample sizes. The unilateral exercise model can serve to increase statistical power and reduce the time and cost of a study. With this approach, 2 limbs of a participant are randomized to 1 of 2 treatments that can be applied almost concurrently or sequentially depending on the nature of the intervention...
January 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28156163/post-infarct-sleep-disruption-and-its-relation-to-cardiac-remodeling-in-a-rat-model-of-myocardial-infarction
#13
Marjan Aghajani, Mahdieh Faghihi, Alireza Imani, Mohammad Reza Vaez Mahdavi, Abbas Shakoori, Tayebeh Rastegar, Hoda Parsa, Saman Mehrabi, Fatemeh Moradi, Ehsan Kazemi Moghaddam
Sleep disruption after myocardial infarction (MI) by affecting ubiquitin-proteasome system (UPS) is thought to contribute to myocardial remodeling and progressive worsening of cardiac function. The aim of current study was to test the hypothesis about the increased risk of developing heart failure due to experience of sleep restriction (SR) after MI. Male Wistar rats (n = 40) were randomly assigned to four experimental groups: (1) Sham, (2) MI, (3) MI and SR (MI + SR) (4) Sham and SR (Sham + SR). MI was induced by permanent ligation of left anterior descending coronary artery...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28060373/small-round-blue-cell-tumors-of-the-sinonasal-tract-a-differential-diagnosis-approach
#14
Lester Dr Thompson
One of the most challenging diagnostic categories within tumors of the sinonasal tract is the small round blue cell tumors. Biopsies are usually small and limited, resulting in considerable diagnostic difficulty for practicing surgical pathologists. These tumors share several overlapping histologic and immunophenotypic findings while also showing considerable variation within and between cases. Specific tumor site of origin, imaging findings, and clinical findings must be combined with the histology and pertinent ancillary studies if the correct diagnosis is to be reached...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28057852/endothelin-1-and-et-receptors-impair-left-ventricular-function-by-mediated-coronary-arteries-dysfunction-in-chronic-intermittent-hypoxia-rats
#15
Jin-Wei Wang, Ai-Ying Li, Qiu-Hong Guo, Ya-Jing Guo, James W Weiss, En-Sheng Ji
Obstructive sleep apnea (OSA) results in cardiac dysfunction and vascular endothelium injury. Chronic intermittent hypoxia (CIH), the main characteristic of OSAS, is considered to be mainly responsible for cardiovascular system impairment. This study is aimed to evaluate the role of endothelin-1(ET-1) system in coronary injury and cardiac dysfunction in CIH rats. In our study, Sprague-Dawley rats were exposed to CIH (FiO2 9% for 1.5 min, repeated every 3 min for 8 h/d, 7 days/week for 3 weeks). After 3 weeks, the left ventricular developed pressure (LVDP) and coronary resistance (CR) were measured with the langendorff mode in isolated hearts...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/27982683/the-in-vivo-effects-of-adenine-induced-chronic-kidney-disease-on-some-renal-and-hepatic-function-and-cyp450-metabolizing-enzymes
#16
M Al Za'abi, A Shalaby, P Manoj, B H Ali
Adenine-induced model of chronic kidney disease (CKD) is a widely used model especially in studies testing novel nephroprotective agents. We investigated the effects of adenine-induced CKD in rats on the activities of some xenobiotic metabolizing enzymes in liver and kidneys, and on some in vivo indicators of drug metabolism (viz pentobarbitone sleeping time, and plasma concentration of theophylline 90 min post administration). CKD was induced by orally feeding adenine (0.25 % w/w) for 35 days. Adenine induced all the characteristics of CKD, which was confirmed by biochemical and histological findings...
May 4, 2017: Physiological Research
https://www.readbyqxmd.com/read/27842547/health-related-quality-of-life-in-patients-with-barrett-s-esophagus
#17
Chi-Yang Chang, Lukas Jyuhn-Hsiarn Lee, Jung-Der Wang, Ching-Tai Lee, Chi-Ming Tai, Tao-Qian Tang, Jaw-Town Lin
BACKGROUND: Gastroesophageal reflux disease (GERD) has become a major health problem globally, affecting patients' health-related quality of life (HRQOL). Barrett's esophagus (BE) is a precancerous lesion associated with GERD. BE patients might not only suffer from HRQOL losses by GERD but also face psychological distress due to the increased risk of developing cancer. However, the majority of patients in Asia have shorter BE segment which is different from the West. This study aimed to determine whether the HRQOL in BE patients were worse than in healthy referents in Taiwan...
November 14, 2016: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/27832434/monitoring-of-venus-transgenic-cell-migration-during-pregnancy-in-non-transgenic-rabbits
#18
N Lipták, O I Hoffmann, A Kerekes, G Iski, D Ernszt, K Kvell, L Hiripi, Z Bősze
Cell transfer between mother and fetus were demonstrated previously in several species which possess haemochorial placenta (e.g. in humans, mice, rats, etc.). Here we report the assessment of fetal and maternal microchimerism in non-transgenic (non-TG) New Zealand white rabbits which were pregnant with transgenic (TG) fetuses and in non-TG newborns of TG does. The TG construct, including the Venus fluorophore cDNA driven by a ubiquitous cytomegalovirus enhancer, chicken ß-actin promoter (CAGGS), was previously integrated into the rabbit genome by Sleeping Beauty transposon system...
April 2017: Transgenic Research
https://www.readbyqxmd.com/read/27731822/effect-of-calcium-hypochlorite-and-chloramine-on-blood-biochemistry-and-sodium-pentobarbital-induced-sleeping-time-in-mice
#19
Sidra Ishaq, Muhammad Adil Rasheed, Muhammad Ashraf, Imran Altaf, Saima Rehmat, Ghulam Fatima
Disinfectants are chemical agents used to eradicate, deactivate or kill microorganisms. Chemical disinfectants especially chlorine compound are extensively used for water sanitization. Among these calcium hypochlorite and chloramines are commonly used now a day. Large number of chemical compounds, drugs and endogenous substances are metabolized by hepatic enzymes known as cytochrome P450 enzyme system. Many chemicals are capable of enzyme induction. Enzyme induction may change the metabolism of other drugs and endogenous substances which may alter the plasma concentration of these chemicals...
September 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27688824/soluble-receptor-for-advanced-glycation-end-product-ameliorates-chronic-intermittent-hypoxia-induced-renal-injury-inflammation-and-apoptosis-via-p38-jnk-signaling-pathways
#20
Xu Wu, Wenyu Gu, Huan Lu, Chengying Liu, Biyun Yu, Hui Xu, Yaodong Tang, Shanqun Li, Jian Zhou, Chuan Shao
Obstructive sleep apnea (OSA) associated chronic kidney disease is mainly caused by chronic intermittent hypoxia (CIH) triggered tissue damage. Receptor for advanced glycation end product (RAGE) and its ligand high mobility group box 1 (HMGB1) are expressed on renal cells and mediate inflammatory responses in OSA-related diseases. To determine their roles in CIH-induced renal injury, soluble RAGE (sRAGE), the RAGE neutralizing antibody, was intravenously administered in a CIH model. We also evaluated the effect of sRAGE on inflammation and apoptosis...
2016: Oxidative Medicine and Cellular Longevity
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