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https://www.readbyqxmd.com/read/27911776/evaluating-early-warning-indicators-of-critical-transitions-in-natural-aquatic-ecosystems
#1
Alena Sonia Gsell, Ulrike Scharfenberger, Deniz Özkundakci, Annika Walters, Lars-Anders Hansson, Annette B G Janssen, Peeter Nõges, Philip C Reid, Daniel E Schindler, Ellen Van Donk, Vasilis Dakos, Rita Adrian
Ecosystems can show sudden and persistent changes in state despite only incremental changes in drivers. Such critical transitions are difficult to predict, because the state of the system often shows little change before the transition. Early-warning indicators (EWIs) are hypothesized to signal the loss of system resilience and have been shown to precede critical transitions in theoretical models, paleo-climate time series, and in laboratory as well as whole lake experiments. The generalizability of EWIs for detecting critical transitions in empirical time series of natural aquatic ecosystems remains largely untested, however...
November 22, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27907966/getting-rid-of-weakness-in-the-icu-an-updated-approach-to-the-acute-management-of-myasthenia-gravis-and-guillain-barr%C3%A3-syndrome
#2
Alexis A Lizarraga, Karlo J Lizarraga, Michael Benatar
After prompt diagnosis, severe myasthenia gravis and Guillain-Barré syndrome (GBS) usually require management in the intensive care unit. In the myasthenic patient, recognition of precipitating factors is paramount, and frequent monitoring of bulbar, upper airway, and/or respiratory muscle strength is needed to identify impending myasthenic crisis. Noninvasive ventilation can be attempted prior to intubation and mechanical ventilation in the setting of respiratory failure. Cholinesterase inhibitors should be discontinued, but resumed prior to extubation, and steroid dosage could be increased once the airway is secured...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27907094/continuous-descending-modulation-of-the-spinal-cord-revealed-by-functional-mri
#3
Patrick W Stroman, Rachael L Bosma, Andreea I Cotoi, Roxanne H Leung, Jennifer Kornelsen, Jane M Lawrence-Dewar, Caroline F Pukall, Roland Staud
Spontaneous variations in spinal cord activity may arise from regulation of any of a number of functions including sensory, motor, and autonomic control. Here, we use functional MRI (fMRI) of healthy participants to identify properties of blood oxygenation-level dependent (BOLD) variations in the spinal cord in response to knowledge that either a noxious stimulus is impending, or that no stimulus is to be expected. Expectation of a noxious stimulus, or no stimulus, is shown to have a significant effect on wide-spread BOLD signal variations in the spinal cord over the entire time period of the fMRI acquisition...
2016: PloS One
https://www.readbyqxmd.com/read/27907006/prediction-of-impending-type-1-diabetes-through-automated-dual-label-measurement-of-proinsulin-c-peptide-ratio
#4
Annelien Van Dalem, Simke Demeester, Eric V Balti, Bart Keymeulen, Pieter Gillard, Bruno Lapauw, Christophe De Block, Pascale Abrams, Eric Weber, Ilse Vermeulen, Pieter De Pauw, Daniël Pipeleers, Ilse Weets, Frans K Gorus
BACKGROUND: The hyperglycemic clamp test, the gold standard of beta cell function, predicts impending type 1 diabetes in islet autoantibody-positive individuals, but the latter may benefit from less invasive function tests such as the proinsulin:C-peptide ratio (PI:C). The present study aims to optimize precision of PI:C measurements by automating a dual-label trefoil-type time-resolved fluorescence immunoassay (TT-TRFIA), and to compare its diagnostic performance for predicting type 1 diabetes with that of clamp-derived C-peptide release...
2016: PloS One
https://www.readbyqxmd.com/read/27904730/intramedullary-nailing-for-pathological-fractures-of-the-proximal-humerus
#5
Eun-Seok Choi, Ilkyu Han, Hwan Seong Cho, In Woong Park, Jong Woong Park, Han-Soo Kim
BACKGROUND: Endoprosthetic reconstruction is widely applied for pathological fractures of the proximal humerus; however, functional impairment is usually unsatisfactory. The aims of the current study are to evaluate the reliability of interlocking intramedullary (IM) nailing with cement augmentation as a fixation method in proximal humeral lesions and to assess functional outcomes. METHODS: We reviewed 32 patients with pathological fractures of the proximal humerus who underwent interlocking IM nailing and cement augmentation...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27904524/integration-of-medical-therapy-and-mechanical-circulatory-support-in-the-management-of-acute-heart-failure
#6
Patrick Horn, Malte Kelm, Ralf Westenfeld
Acute heart failure is still characterized by poor prognosis with high mortality. Diagnosis is based on clinical symptoms and hemodynamic measurements. Early coronary revascularization in cardiogenic shock complicating myocardial infarction improves outcome. The further contemporary therapeutic options in the management of acute heart failure are limited to a merely symptomatic effect with relief of dyspnea, reduction of volume overload and improvement of hemodynamic parameters by vasodilators (in hypertension) or inotropic and vasopressor agents (in hypotension)...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27900149/video-analysis-of-concussion-injury-mechanism-in-under-18-rugby
#7
Sharief Hendricks, Sam O'Connor, Michael Lambert, James C Brown, Nicholas Burger, Sarah Mc Fie, Clint Readhead, Wayne Viljoen
BACKGROUND: Understanding the mechanism of injury is necessary for the development of effective injury prevention strategies. Video analysis of injuries provides valuable information on the playing situation and athlete-movement patterns, which can be used to formulate these strategies. Therefore, we conducted a video analysis of the mechanism of concussion injury in junior-level rugby union and compared it with a representative and matched non-injury sample. METHODS: Injury reports for 18 concussion events were collected from the 2011 to 2013 under-18 Craven Week tournaments...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27896144/clinical-decision-support-for-drug-related-events-moving-towards-better-prevention
#8
REVIEW
Sandra L Kane-Gill, Archita Achanta, John A Kellum, Steven M Handler
Clinical decision support (CDS) systems with automated alerts integrated into electronic medical records demonstrate efficacy for detecting medication errors (ME) and adverse drug events (ADEs). Critically ill patients are at increased risk for ME, ADEs and serious negative outcomes related to these events. Capitalizing on CDS to detect ME and prevent adverse drug related events has the potential to improve patient outcomes. The key to an effective medication safety surveillance system incorporating CDS is advancing the signals for alerts by using trajectory analyses to predict clinical events, instead of waiting for these events to occur...
November 4, 2016: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/27893151/anomalies-in-human-sex-determination-provide-unique-insights-into-the-complex-genetic-interactions-of-early-gonad-development
#9
REVIEW
Anu Bashamboo, Caroline Eozenou, Sandra Rojo, Ken McElreavey
Human sex-determination (SD) involves complex mutually antagonistic genetic interactions of testis- and ovary-determining pathways. For many years both male and female sex-determination was considered to be regulated by a linear cascade of pro-male and pro-female genes respectively, however it has become clear that male and female development is achieved through the repression of the alternative state. A gene determining the formation of a testis may function by repressing the female state and vice-versa. Uniquely in development, SD is achieved by suppression of the alternate fate and maintained in adulthood by a mutually antagonistic double-repressive pathway...
November 28, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27891734/impending-skin-necrosis-after-dermal-filler-injection-a-golden-time-for-first-aid-intervention
#10
Ji Yeon Hong, Joon Seok, Ga Ram Ahn, Yu-Jin Jang, Kapsok Li, Beom Joon Kim
Vascular compromise with impending skin necrosis is one of the most serious potential complications. Early recognition of vascular occlusion and swift and aggressive treatment are required to avoid any irreversible changes. However, initial symptoms of a vascular event are often dismissed as simple post-procedural discomfort. If more than 3 days pass after filler injection, crust formation is initiated over the erythematous base along with a rim of fibrous tissue. Due to the replacement of normal tissues by fibrous material, the healing process may result in scar formation in spite of debridement and aggressive dressing changes...
November 28, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27890677/time-course-of-organ-of-corti-degeneration-after-noise-exposure
#11
Barbara A Bohne, Melissa Kimlinger, Gary W Harding
From our permanent collection of plastic-embedded flat preparations of chinchilla cochleae, 22 controls and 199 ears from noise-exposed animals were used to determine when, postexposure, hair cell (HC) and supporting cell (SC) degeneration were completed. The exposed ears were divided into four groups based on exposure parameters: 0.5- or 4-kHz octave band of noise at moderate (M) or high (H) intensities. Postexposure survival ranged from < 1 h to 2.5 y. Ears fixed ≤ 0-12 h postexposure were called ‛acute‛...
November 24, 2016: Hearing Research
https://www.readbyqxmd.com/read/27885225/the-physical-signs-of-impending-dehydration-among-elderly-people-in-nursing-homes-the-association-with-axillary-skin-temperature-humidity-intraoral-moisture-content-and-salivary-components
#12
Mayumi Okuyama, Masumi Nishida
PURPOSE: The aim of the present study was to examine the association between impending dehydration among elderly people in nursing homes and physical signs, including the axillary skin temperature, humidity, intraoral moisture content, and salivary components. METHODS: The study included 78 elderly individuals who required long-term care in a nursing home (11 men and 67 women; average age, 86.6±7.3 years). The elderly subjects were classified in two groups according to their serum osmolality levels: those with levels between the upper limit reference value (292 mOsm/kg H2O) and the diagnostic reference value of dehydration (300 mOsm/kg H2O) were classified into the boundary zone group and those with levels of <292 mOsm/kg H2O were classified into the normal range group...
2016: Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
https://www.readbyqxmd.com/read/27871552/preoperative-depressed-mood-and-perioperative-heart-rate-variability-in-patients-with-hepatic-cancer
#13
Eun-Hee Kim, Jin-Hyoung Park, Sangmin M Lee, Mi-Sook Gwak, Gaab-Soo Kim, Myung-Hee Kim
STUDY OBJECTIVE: How perioperative heart rate variability (HRV) indices differ according to the anxiety or depressed mood of patients scheduled to undergo a major surgical procedure for cancer. DESIGN: Prospective observational study. SETTING: Operating room. PATIENTS: Forty-one male patients between 40 and 70 years of age with hepatocellular carcinoma were included in the final analysis. INTERVENTIONS: HRV was measured on the day before surgery (T1), impending anesthesia (T2), and after anesthetic induction (T3)...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27864799/primordial-prevention-of-cardiometabolic-risk-in-childhood
#14
Meryem A Tanrikulu, Mehmet Agirbasli, Gerald Berenson
Fetal life and childhood are important in the development of cardiometabolic risk and later clinical disease of atherosclerosis, hypertension and diabetes mellitus. Molecular and environmental conditions leading to cardiometabolic risk in early life bring us a challenge to develop effective prevention and intervention strategies to reduce cardiovascular (CV) risk in children and later disease. It is important that prevention strategies begin at an early age to reduce future CV morbidity and mortality. Pioneering work from longitudinal studies such as Bogalusa Heart Study (BHS), the Finnish Youth Study and other programs provide an awareness of the need for public and health services to begin primordial prevention...
November 19, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27861447/diagnostic-accuracy-of-neuromonitoring-for-identification-of-new-neurologic-deficits-in-pediatric-spinal-fusion-surgery
#15
Victor M Neira, Kamyar Ghaffari, Srinivas Bulusu, Paul J Moroz, James G Jarvis, Nicholas Barrowman, William Splinter
BACKGROUND: Intraoperative neuromonitoring (IONM) modalities, transcranial motor-evoked potentials (TcMEPs), and somatosensory-evoked potentials (SSEPs) are accepted methods to identify impending spinal cord injury during spinal fusion surgery. Debate exists over sensitivity and specificity of these modalities. Our purpose was to measure the incidence of new neurologic deficits (NNDs) and estimate sensitivity and specificity of IONM modalities. METHODS: Institutional Ethics Board approval was obtained to review charts of patients younger than 22 years undergoing scoliosis surgery from 2007 to 2014 retrospectively...
December 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27861147/arctigenin-inhibits-stat3-and-exhibits-anticancer-potential-in-human-triple-negative-breast-cancer-therapy
#16
Tingting Feng, Wei Cao, Wanxiang Shen, Liang Zhang, Xinsheng Gu, Yang Guo, Hsiang-I Tsai, Xuewen Liu, Jian Li, Jingxuan Zhang, Shan Li, Fuyun Wu, Ying Liu
Triple-negative breast cancers (TNBCs) are the most aggressive and hard-to-treat breast tumors with poor prognosis, and exploration for novel therapeutic drugs is impending. Arctigenin (Atn), a bioactive lignan isolated from seeds of Arctium lappa L, has been reported to inhibit many cancer types; however, the effect of Atn on TNBC remains unclear. In this study, we demonstrated that Atn decreased proliferation, and induced apoptosis in TNBC cells. Furthermore, we explored the underlying mechanism of Atn inhibition on TNBC cells...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27860509/the-natural-history-of-the-south-hills-crossbill-in-relation-to-its-impending-extinction
#17
Craig W Benkman
Increasingly, the species that we discover will be uncommon, area restricted, and vulnerable to extinction. I describe the natural history of a newly discovered seed-eating finch from the Rocky Mountain region, the South Hills crossbill (Loxia curvirostra complex). It relies on seeds in the closed cones of the fire-adapted Rocky Mountain lodgepole pine (Pinus contorta latifolia) and is found only in the higher elevations of two small mountain ranges in southern Idaho. Here crossbills and pine are engaged in a coevolutionary arms race...
December 2016: American Naturalist
https://www.readbyqxmd.com/read/27857914/continuous-renal-replacement-therapy-for-acute-renal-failure-in-patients-with-traumatic-brain-injury
#18
Chang-Yong Park, Hyun-Yong Choi, Nam-Kyu You, Tae Hoon Roh, Sook Jin Seo, Se-Hyuk Kim
OBJECTIVE: The purpose of this study was to investigate the impact of continuous renal replacement therapy (CRRT) on survival and relevant factors in patients who underwent CRRT after traumatic brain injury (TBI). METHODS: We retrospectively reviewed the laboratory, clinical, and radiological data of 29 patients who underwent CRRT among 1,190 TBI patients treated at our institution between April 2011 and June 2015. There were 20 men and 9 women, and the mean age was 60...
October 2016: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/27857494/osteofascial-compartment-pressure-measurement-in-closed-limb-injuries-whitesides-technique-revisited
#19
Rajendra Kumar Beniwal, Abhishek Bansal
INTRODUCTION: Regular monitoring of tissue compartmental pressures and hence a timely intervention in patients with impending compartment syndrome has been shown to prevent morbidity and permanent disability. MATERIAL AND METHODS: Intra-compartmental pressure in flexor compartment of forearm and various compartments of legs following recent trauma presenting within 6 h of injury was carried out in 30 subjects using Whitesides' technique and patients were classified into 3 categories for treatment purposes i...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27855644/febrile-illness-diagnostics-and-the-malaria-industrial-complex-a-socio-environmental-perspective
#20
Justin Stoler, Gordon A Awandare
BACKGROUND: Global prioritization of single-disease eradication programs over improvements to basic diagnostic capacity in the Global South have left the world unprepared for epidemics of chikungunya, Ebola, Zika, and whatever lies on the horizon. The medical establishment is slowly realizing that in many parts of sub-Saharan Africa (SSA), particularly urban areas, up to a third of patients suffering from acute fever do not receive a correct diagnosis of their infection. MAIN BODY: Malaria is the most common diagnosis for febrile patients in low-resource health care settings, and malaria misdiagnosis has soared due to the institutionalization of malaria as the primary febrile illness of SSA by international development organizations and national malaria control programs...
November 17, 2016: BMC Infectious Diseases
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