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https://www.readbyqxmd.com/read/28634425/a-transcriptional-regulatory-role-for-the-membrane-type-1-matrix-metalloproteinase-in-carcinogen-induced-inflammasome-gene-expression
#1
Samuel Sheehy, Borhane Annabi
Signal-transducing functions driven by the cytoplasmic domain of membrane type-1 matrix metalloproteinase (MT1-MMP) are believed to regulate many inflammation-associated cancer cell functions including migration, proliferation, and survival. Aside from upregulation of the inflammation biomarker cyclooxygenase-2 (COX-2) expression, MT1-MMP's role in relaying intracellular signals triggered by extracellular pro-inflammatory cues remains poorly understood. Here, we triggered inflammation in HT1080 fibrosarcoma cells with phorbol-12-myristate-13-acetate (PMA), an inducer of COX-2 and of MT1-MMP...
2017: Gene Regulation and Systems Biology
https://www.readbyqxmd.com/read/28632160/the-protease-inhibitor-ci2c-gene-induced-by-bird-cherry-oat-aphid-in-barley-inhibits-green-peach-aphid-fecundity-in-transgenic-arabidopsis
#2
Aleksandra Losvik, Lisa Beste, Sara Mehrabi, Lisbeth Jonsson
Aphids are phloem feeders that cause large damage globally as pest insects. They induce a variety of responses in the host plant, but not much is known about which responses are promoting or inhibiting aphid performance. Here, we investigated whether one of the responses induced in barley by the cereal aphid, bird cherry-oat aphid (Rhopalosiphum padi L.) affects aphid performance in the model plant Arabidopsis thaliana L. A barley cDNA encoding the protease inhibitor CI2c was expressed in A. thaliana and aphid performance was studied using the generalist green peach aphid (Myzus persicae Sulzer)...
June 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28628666/the-effector-avrrxo1-phosphorylates-nad-in-planta
#3
Teja Shidore, Corey D Broeckling, Jay S Kirkwood, John J Long, Jiamin Miao, Bingyu Zhao, Jan E Leach, Lindsay R Triplett
Gram-negative bacterial pathogens of plants and animals employ type III secreted effectors to suppress innate immunity. Most characterized effectors work through modification of host proteins or transcriptional regulators, although a few are known to modify small molecule targets. The Xanthomonas type III secreted avirulence factor AvrRxo1 is a structural homolog of the zeta toxin family of sugar-nucleotide kinases that suppresses bacterial growth. AvrRxo1 was recently reported to phosphorylate the central metabolite and signaling molecule NAD in vitro, suggesting that the effector might enhance bacterial virulence on plants through manipulation of primary metabolic pathways...
June 19, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28626186/reversible-cerebral-vasoconstriction-syndrome-presenting-with-transient-global-amnesia
#4
Kenji Isahaya, Kensuke Shinohara, Masashi Akamatu, Takahiro Shimizu, Kenzo Sakurai, Makoto Shiraishi, Hisanao Akiyama, Yasuhiro Hasegawa
A 65-year-old man who had been diagnosed with transient global amnesia (TGA) 15 years previously was admitted to hospital with complaints of amnesia and headache. His symptoms improved on day-2. The initial brain MRI and electroencephalography findings were normal. He was diagnosed with a recurrence of TGA and discharged. However, he returned with right leg weakness and complained of a thunderclap headache. MRI demonstrated subarachnoid hemorrhage and multifocal segmental narrowing of the left posterior cerebral artery (PCA) and large intracranial arteries, and he was diagnosed with reversible cerebral vasoconstriction syndrome (RCVS)...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28626050/admission-brain-cortical-volume-an-independent-determinant-of-poststroke-cognitive-vulnerability
#5
Sharmila Sagnier, Gwenaëlle Catheline, Bixente Dilharreguy, Fanny Munsch, Antoine Bigourdan, Mathilde Poli, Sabrina Debruxelles, Stéphane Olindo, Pauline Renou, François Rouanet, Vincent Dousset, Thomas Tourdias, Igor Sibon
BACKGROUND AND PURPOSE: Several markers of poststroke cognitive impairment have been reported. The role of brain cortical volume remains uncertain. The aim of this study was to evaluate the influence of brain cortical volume on cognitive outcomes using a voxel-based morphometry approach in subjects without prestroke dementia. METHODS: Ischemic stroke patients were prospectively recruited 24 to 72 hours post-stroke (M0). Cognition was evaluated at M0, 3 months, and 1 year (M12) using the Montreal Cognitive Assessment, the Isaacs set test, and the Zazzo's cancellation task...
June 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28624878/a-combination-of-three-repurposed-drugs-administered-at-reperfusion-as-a-promising-therapy-for-postischemic-brain-injury
#6
I-Chen Yu, Ping-Chang Kuo, Jui-Hung Yen, Hallel C Paraiso, Eric T Curfman, Benecia C Hong-Goka, Robert D Sweazey, Fen-Lei Chang
Cerebral ischemia leads to multifaceted injury to the brain. A polytherapeutic drug that can be administered immediately after reperfusion may increase protection to the brain by simultaneously targeting multiple deleterious cascades. This study evaluated efficacy of the combination of three clinically approved drugs: lamotrigine, minocycline, and lovastatin, using two mouse models: global and focal cerebral ischemia induced by transient occlusion of the common carotid arteries or the middle cerebral artery, respectively...
June 17, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28619942/seasonal-water-storage-stress-modulation-and-california-seismicity
#7
Christopher W Johnson, Yuning Fu, Roland Bürgmann
Establishing what controls the timing of earthquakes is fundamental to understanding the nature of the earthquake cycle and critical to determining time-dependent earthquake hazard. Seasonal loading provides a natural laboratory to explore the crustal response to a quantifiable transient force. In California, water storage deforms the crust as snow and water accumulates during the wet winter months. We used 9 years of global positioning system (GPS) vertical deformation time series to constrain models of monthly hydrospheric loading and the resulting stress changes on fault planes of small earthquakes...
June 16, 2017: Science
https://www.readbyqxmd.com/read/28618080/electrocatalytic-mechanism-involving-michaelis-menten-kinetics-at-the-preparative-scale-theory-and-applicability-to-photocurrents-from-photosynthetic-algae-suspension-with-quinones
#8
Guillaume Longatte, Manon Guille-Collignon, Frédéric Lemaître
In the past years, many strategies were implemented to take benefits from oxygenic photosynthesis to harvest photosynthetic electrons and produce a significant photocurrent. Therefore, electrochemical tools were considered and globally relied on the electron transfer(s) between the photosynthetic chain and a collecting electrode. In this context, we recently reported the implementation of an electrochemical set-up at the preparative scale to produce photocurrents from a Chlamydomonas reinhardtii algae suspension with an appropriate mediator (2,6-DCBQ) and a carbon gauze as the working electrode...
June 15, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28612401/safety-and-effectiveness-of-collagenase-clostridium-histolyticum-cch-xiapex-%C3%A2-in-the-treatment-of-peyronie-s-disease-using-a-new-modified-shortened-protocol
#9
Amr Abdel Raheem, Marco Capece, Odunayo Kalejaiye, Tarek Abdel-Raheem, Marco Falcone, Mark Johnson, Oliver George Ralph, Giulio Garaffa, Andrew Nim Christopher, David John Ralph
OBJECTIVES: To evaluate the efficacy and safety of collagenase clostridium histolyticum (CCH) (Xiapex(®) , Xiaflex(®) ) in the treatment of Peyronie's disease (PD) using a new modified treatment protocol which aims at reducing the number of injections needed and reducing patient visits, thus reducing the cost and duration of treatment. PATIENTS AND METHODS: A prospective study of 53 patients with PD who had treatment with CCH at a single center using a new modified protocol...
June 14, 2017: BJU International
https://www.readbyqxmd.com/read/28612156/reduction-of-sr-ca-2-leak-and-arrhythmogenic-cellular-correlates-by-smp-114-a-novel-camkii-inhibitor-with-oral-bioavailability
#10
Stefan Neef, Christian Mann, Anne Zwenger, Nataliya Dybkova, Lars S Maier
Sarcoplasmic reticulum (SR) Ca(2+) leak induced by Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is centrally involved in atrial and ventricular arrhythmogenesis as well as heart failure remodeling. Consequently, treating SR Ca(2+) leak has been proposed as a novel therapeutic paradigm, but compounds for use in humans are lacking. SMP-114 ("Rimacalib") is a novel, orally available CaMKII inhibitor developed for human use that has already entered clinical phase II trials to treat rheumatoid arthritis...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28611653/familial-retinal-arteriolar-tortuosity-with-acute-hippocampal-infarction
#11
Tae Hee Kim, Sonia Lee, Su Jin Lim
PURPOSE: To report a case of familial retinal arteriolar tortuosity with acute hippocampal infarction. METHOD: Single-patient case report. RESULTS: A 50-year-old woman presented with blurred vision and was found to have cataract, retinal hemorrhages, and tortuous retinal arterioles in both eyes. Similar findings of tortuous retinal arterioles were observed in her daughter and son. In her past history of 6 years prior to the visit, she had been diagnosed with transient global amnesia after brain magnetic resonance imaging, which showed hippocampal infarction and multiple chronic ischemic lesions in the periventricular and subcortical white matter...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28611310/chronic-inflammation-and-apoptosis-propagate-in-ischemic-cerebellum-and-heart-of-non-human-primates
#12
Sandra A Acosta, Sherwin Mashkouri, Diana Nwokoye, Jea Y Lee, Cesar V Borlongan
The major pathological consequences of cerebral ischemia are characterized by neurological deficits commonly ascribed to the infarcted tissue and its surrounding region, however, brain areas, as well as peripheral organs, distal from the original injury may manifest as subtle disease sequelae that can increase the risks of co-morbidities complicating the disease symptoms. To evaluate the vulnerability of the cerebellum and the heart to secondary injuries in the late stage of transient global ischemia (TGI) model in non-human primates (NHP), brain and heart tissues were collected at six months post-TGI...
June 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28602122/transcriptome-wide-analyses-of-human-neonatal-articular-cartilage-and-human-mesenchymal-stem-cells-hmscs-derived-cartilage-provide-a-new-molecular-target-for-evaluating-engineered-cartilage
#13
Rodrigo Alfonso Somoza, Diego Correa, Ivan Labat, Hal Sternberg, Megan E Forrest, Ahmad M Khalil, Michael D West, Paul J Tesar, Arnold I Caplan
Cellular differentiation comprises a progressive, multistep program that drives cells to fabricate a tissue with specific and site distinctive structural and functional properties. Cartilage constitutes one of the potential differentiation lineages that Mesenchymal Stem Cells (MSCs) can follow under the guidance of specific bioactive agents. Single agents such as TGF-β and BMP2 in unchanging culture conditions have been historically used to induce in vitro chondrogenic differentiation of MSCs. Despite the expression of traditional chondrogenic biomarkers such as type II collagen and aggrecan, the resulting tissue represents a transient cartilage rather than an in vivo articular cartilage (AC), differing significantly in structure, chemical composition, cellular phenotypes, and mechanical properties...
June 10, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28600157/multichannel-sleep-spindle-detection-using-sparse-low-rank-optimization
#14
Ankit Parekh, Ivan W Selesnick, Ricardo S Osorio, Andrew W Varga, David M Rapoport, Indu Ayappa
BACKGROUND: Automated single-channel spindle detectors, for human sleep EEG, are blind to the presence of spindles in other recorded channels unlike visual annotation by a human expert. NEW METHOD: We propose a multichannel spindle detection method that aims to detect global and local spindle activity in human sleep EEG. Using a non-linear signal model, which assumes the input EEG to be the sum of a transient and an oscillatory component, we propose a multichannel transient separation algorithm...
June 6, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28599085/exploring-the-putative-role-of-trpv1-dependent-cgrp-release-in-remote-hind-preconditioning-induced-cardioprotection
#15
Puneet Kaur Randhawa, Amteshwar Singh Jaggi
Remote ischemic preconditioning (RIPC) is a phenomenon whereby transient non-lethal ischemia and reperfusion episodes confer protection against prolonged ischemia-reperfusion-induced injury. However, the underlying intracellular signaling has not been extensively explored. The present study aims to inspect the putative involvement of TRPV1 -dependent CGRP release in mediating remote hind limb preconditioning-induced cardioprotection. In the present study, remote hind limb preconditioning stimulus was delivered (4 consecutive episodes of 5 minutes of ischemia-reperfusion) using a blood pressure cuff tied at the inguinal level of the rat...
June 9, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28591484/safety-and-efficacy-of-gamma-knife-radiosurgery-in-hypothalamic-hamartomas-with-severe-epilepsies-a-prospective-trial-in-48-patients-and-review-of-the-literature
#16
Jean Régis, Medhi Lagmari, Romain Carron, Motohiro Hayashi, Aileen McGonigal, Géraldine Daquin, Nathalie Villeneuve, Virginie Laguitton, Fabrice Bartolomei, Patrick Chauvel
Epilepsies associated with hypothalamic hamartomas (HHs) are frequently drug resistant with severe psychiatric and cognitive comorbidities. We performed a prospective trial to evaluate the safety and efficacy of Gamma Knife radiosurgery (GKS). Between October 1999 and October 2007, a total of 57 patients were investigated, included and treated by GKS in Timone University Hospital. Preoperative workup and 3-year postoperative evaluation consisted of seizure diary, neuropsychological, psychiatric, endocrinologic, visual field, and visual acuity examinations...
June 2017: Epilepsia
https://www.readbyqxmd.com/read/28586126/significance-of-oliguria-in-critically-ill-patients-with-chronic-liver-disease
#17
Roland Amathieu, Ali Al-Khafaji, Florentina E Sileanu, Emily Foldes, Rebecca DeSensi, Ibtesam Hilmi, John A Kellum
Clinical guidelines recommend using Kidney Disease Improving Global Outcomes (KDIGO) criteria for the diagnosis and classification of acute kidney injury (AKI) in patients with chronic liver disease (CLD). Concerns have been raised about the use of urine output (UO) criteria in CLD. We examined the significance of oliguria meeting the urine output criteria for AKI (AKI-UO) and examined its association with clinical outcomes in CLD patients. Using an eight-year clinical database from a large university medical center, 3458 patients with CLD were identified...
June 6, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28586018/transient-cerebral-ischemia-induces-albumin-expression-in-microglia-only-in-the-ca1-region-of-the-gerbil-hippocampus
#18
Joon Ha Park, Jin-A Park, Ji Hyeon Ahn, Yang Hee Kim, Il Jun Kang, Moo-Ho Won, Choong-Hyun Lee
Albumin, the most abundant plasma protein, is known to exhibit a neuroprotective effect in animal models of focal and global cerebral ischemia. In the present study, the expression and immunoreactivity of albumin was examined in the hippocampus following 5 min of transient cerebral ischemia in gerbils. Albumin immunoreactivity was observed in microglia of the CA1 hippocampal region 2 days post‑ischemic insult, and it was significantly increased at 4 days following ischemia-reperfusion. In addition, at 4 days post‑ischemic insult, albumin‑immunoreactive microglia were abundant in the stratum pyramidale of the CA1 region...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28585937/nitrogen-cost-minimization-is-promoted-by-structural-changes-in-the-transcriptome-of-n-deprived-prochlorococcus-cells
#19
Robert W Read, Paul M Berube, Steven J Biller, Iva Neveux, Andres Cubillos-Ruiz, Sallie W Chisholm, Joseph J Grzymski
Prochlorococcus is a globally abundant marine cyanobacterium with many adaptations that reduce cellular nutrient requirements, facilitating growth in its nutrient-poor environment. One such genomic adaptation is the preferential utilization of amino acids containing fewer N-atoms, which minimizes cellular nitrogen requirements. We predicted that transcriptional regulation might further reduce cellular N budgets during transient N limitation. To explore this, we compared transcription start sites (TSSs) in Prochlorococcus MED4 under N-deprived and N-replete conditions...
June 6, 2017: ISME Journal
https://www.readbyqxmd.com/read/28584311/takotsubo-cardiomyopathy-in-the-case-of-72-year-old-teacher-after-work-related-psychological-stress-evolution-of-left-ventricular-longitudinal-strain-delayed-but-complete-recovery-in-automated-function-imaging-afi
#20
Karina Wierzbowska-Drabik, Andrzej Marcinkiewicz, Piotr Hamala, Ewa Trzos, Piotr Lipiec, Małgorzata Kurpesa, Radosław Kręcki, Michał Plewka, Jarosław D Kasprzak
Takotsubo cardiomyopathy (TC) is related to a transient systolic dysfunction of left ventricle (LV), accompanied by clinical and electrocardiographic symptoms of myocardial ischemia in the absence of hemodynamically significant coronary artery disease. Takotsubo cardiomyopathy is usually provoked by a psychologically or/and physically stressful event which may be related to occupational activities. Although visually assessed evolution of LV function is well documented, the data concerning strain changes is sparse and various patterns of deformation abnormalities are suggested...
March 23, 2017: International Journal of Occupational Medicine and Environmental Health
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