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https://www.readbyqxmd.com/read/28813416/large-turbulent-reservoirs-of-cold-molecular-gas-around-high-redshift-starburst-galaxies
#1
E Falgarone, M A Zwaan, B Godard, E Bergin, R J Ivison, P M Andreani, F Bournaud, R S Bussmann, D Elbaz, A Omont, I Oteo, F Walter
Starburst galaxies at the peak of cosmic star formation are among the most extreme star-forming engines in the Universe, producing stars over about 100 million years (ref. 2). The star-formation rates of these galaxies, which exceed 100 solar masses per year, require large reservoirs of cold molecular gas to be delivered to their cores, despite strong feedback from stars or active galactic nuclei. Consequently, starburst galaxies are ideal for studying the interplay between this feedback and the growth of a galaxy...
August 14, 2017: Nature
https://www.readbyqxmd.com/read/28807609/cspb-of-an-arctic-bacterium-polaribacter-irgensii-kopri-22228-confers-extraordinary-freeze-tolerance
#2
Youn Hong Jung, Yoo Kyung Lee, Hong Kum Lee, Kyunghee Lee, Hana Im
Freezing temperatures are a major challenge for life at the poles. Decreased membrane fluidity, uninvited secondary structure formation in nucleic acids, and protein cold-denaturation all occur at cold temperatures. Organisms adapted to polar regions possess distinct mechanisms that enable them to survive in extremely cold environments. Among the cold-induced proteins, cold shock protein (Csp) family proteins are the most prominent. A gene coding for a Csp-family protein, cspB, was cloned from an arctic bacterium, Polaribacter irgensii KOPRI 22228, and overexpression of cspB greatly increased the freeze-survival rates of Escherichia coli hosts, to a greater level than any previously reported Csp...
July 31, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28806748/temperature-effects-on-gene-expression-and-morphological-development-of-european-eel-anguilla-anguilla-larvae
#3
Sebastian N Politis, David Mazurais, Arianna Servili, Jose-Luis Zambonino-Infante, Joanna J Miest, Sune R Sørensen, Jonna Tomkiewicz, Ian A E Butts
Temperature is important for optimization of rearing conditions in aquaculture, especially during the critical early life history stages of fish. Here, we experimentally investigated the impact of temperature (16, 18, 20, 22 and 24°C) on thermally induced phenotypic variability, from larval hatch to first-feeding, and the linked expression of targeted genes [heat shock proteins (hsp), growth hormone (gh) and insulin-like growth factors (igf)] associated to larval performance of European eel, Anguilla anguilla...
2017: PloS One
https://www.readbyqxmd.com/read/28802985/clinical-analysis-of-48-h-emergency-department-visit-post-outpatient-extracorporeal-shock-wave-lithotripsy-for-urolithiasis
#4
Chin-Heng Lu, Junne-Yih Kuo, Tzu-Ping Lin, Yi-Hsiu Huang, Hsiao-Jen Chung, William J S Huang, Howard H H Wu, Yen-Hwa Chang, Alex T L Lin, Kuang-Kuo Chen
BACKGROUND: Patients suffering from renal or ureteral stones can undergo significant discomfort, even when timely diagnosed and treated. The aim of this study was to assess the risk factors and safety of outpatient Extracorporeal Shock Wave Lithotripsy (ESWL) in the management of patients with renal or ureteral stones. METHODS: In this study, our cohort consisted of 844 outpatients who underwent outpatient ESWL treated between February 2012 and November 2014 at Taipei Veterans General Hospital...
August 9, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28800848/cold-generation-of-smoke-flavour-by-the-first-phenolic-acid-decarboxylase-from-a-filamentous-ascomycete-isaria-farinosa
#5
Diana Linke, Stephanie J L Riemer, Silke Schimanski, Annabel Nieter, Ulrich Krings, Ralf G Berger
A decarboxylase (IfPAD) from the ascomycete Isaria farinosa converted ferulic acid to 4-vinylguaiacol (4-VG), a volatile which imparts the distinct "smoke flavor" of pyrolized wood. The activity was enhanced by adding (E)-ferulic acid to the culture medium and peaked with 3.6 U g(-1) mycelium (1 μmol 4-VG min(-1)). The coding sequence of 543 bp was translated into a 25 kDa protein with a homology of 91 % to putative phenolic acid decarboxylases of its teleomorph, Cordyceps militaris, and Beauveria bassiana, the anamorph of Cordyceps bassiana...
September 2017: Fungal Biology
https://www.readbyqxmd.com/read/28776104/heat-or-cold-priming-induced-cross-tolerance-to-abiotic-stresses-in-plants-key-regulators-and-possible-mechanisms
#6
REVIEW
Mohammad Anwar Hossain, Zhong-Guang Li, Tahsina Sharmin Hoque, David J Burritt, Masayuki Fujita, Sergi Munné-Bosch
Plants growing under field conditions are constantly exposed, either simultaneously or sequentially, to more than one abiotic stress factor. Plants have evolved sophisticated sensory systems to perceive a number of stress signals that allow them to activate the most adequate response to grow and survive in a given environment. Recently, cross-stress tolerance (i.e. tolerance to a second, strong stress after a different type of mild primary stress) has gained attention as a potential means of producing stress-resistant crops to aid with global food security...
August 4, 2017: Protoplasma
https://www.readbyqxmd.com/read/28774719/defective-methionine-metabolism-in-the-brain-after-repeated-blast-exposures-might-contribute-to-increased-oxidative-stress
#7
Peethambaran Arun, William B Rittase, Donna M Wilder, Ying Wang, Irene D Gist, Joseph B Long
Blast-induced traumatic brain injury (bTBI) is one of the major disabilities in Service Members returning from recent military operations. The neurobiological underpinnings of bTBI, which are associated with acute and chronic neuropathological and neurobehavioral deficits, are uncertain. Increased oxidative stress in the brain is reported to play a significant role promoting neuronal damage associated with both brain injury and neurodegenerative disorders. In this study, brains of rats exposed to repeated blasts in a shock tube underwent untargeted profiling of primary metabolism by automatic linear exchange/cold injection GC-TOF mass spectrometry and revealed acute and sub-acute disruptions in the metabolism of the essential amino acid methionine and associated antioxidants...
July 31, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28770030/the-complete-genome-sequence-of-the-cold-adapted-crude-oil-degrader-pedobacter-steynii-dx4
#8
Sijing Chang, Gaosen Zhang, Ximing Chen, Haozhi Long, Yilin Wang, Tuo Chen, Guangxiu Liu
Pedobacter steynii DX4 was isolated from the soil of Tibetan Plateau and it can use crude oil as sole carbon and energy source at 15 °C. The genome of Pedobacter steynii DX4 has been sequenced and served as basis for analysis its metabolic mechanism. It is the first genome of crude oil degrading strain in Pedobacter genus. The 6.58 Mb genome has an average G + C content of 41.31% and encodes 5464 genes. In addition, annotation revealed that Pedobacter steynii DX4 has cold shock proteins, abundant response regulators for cell motility, and enzymes involved in energy conversion and fatty acid metabolism...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28762448/comparison-of-warm-fluid-and-cold-fluid-resuscitation-during-uncontrolled-hemorrhagic-shock-model-in-rats
#9
Serkan Dilmen, Mehmet Eryılmaz, Salih Müjdat Balkan, Muhittin Serdar, Murat Durusu, Ali Osman Yıldırım, Sanem Aslıhan Dilmen
BACKGROUND: This study was designed to compare the effects of resuscitation with cold and warm fluid on survival time, rate and volume of hemorrhage, hemodynamics, hypothermia, coagulopathy, acid-base balance, hematocrit, lactate, and base deficit during uncontrolled hemorrhagic shock (HS) model in rats. METHODS: HS model was created with splenic vascular and parenchymal injury in 29 rats under ketamine and xylazine anesthesia. Thirty minutes after the hemorrhage, the rats were randomized to receive 14...
July 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28761115/hypothermia-prevents-retinal-damage-generated-by-optic-nerve-trauma-in-the-rat
#10
Manuel Rey-Funes, Ignacio M Larrayoz, Daniela S Contartese, Manuel Soliño, Anibal Sarotto, Martín Bustelo, Martín Bruno, Verónica B Dorfman, César F Loidl, Alfredo Martínez
Ocular and periocular traumatisms may result in loss of vision. Hypothermia provides a beneficial intervention for brain and heart conditions and, here, we study whether hypothermia can prevent retinal damage caused by traumatic neuropathy. Intraorbital optic nerve crush (IONC) or sham manipulation was applied to male rats. Some animals were subjected to hypothermia (8 °C) for 3 h following surgery. Thirty days later, animals were subjected to electroretinography and behavioral tests. IONC treatment resulted in amplitude reduction of the b-wave and oscillatory potentials of the electroretinogram, whereas the hypothermic treatment significantly (p < 0...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28754564/relationship-of-extreme-cold-weather-and-implantable-cardioverter-defibrillator-shocks
#11
Justin M Cloutier, Shuangbo Liu, Brett Hiebert, James W Tam, Colette M Seifer
Cold weather to 0°C has been implicated as a risk factor for ventricular arrhythmias and implantable cardioverter defibrillator (ICD) shocks. The effect of more extreme cold weather on the risk of ventricular arrhythmias and ICD shocks is unknown. We sought to describe the relationship between extreme cold weather and the risk of ICD shocks. We retrospectively identified patients seen at the Pacemaker and Defibrillator Clinic at St. Boniface Hospital in Winnipeg, Manitoba, Canada between 2010 and 2015 with an ICD shock...
June 28, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28742267/profiling-the-effects-of-short-time-course-cold-ischemia-on-tumor-protein-phosphorylation-using-a-bayesian-approach
#12
You Wu, Jeremy Gaskins, Maiying Kong, Susmita Datta
Phosphorylated proteins provide insight into tumor etiology and are used as diagnostic, prognostic, and therapeutic markers of complex diseases. However, pre-analytic variations, such as freezing delay after biopsy acquisition, often occur in real hospital settings and potentially lead to inaccurate results. The objective of this work is to develop statistical methodology to assess the stability of phosphorylated proteins under short-time cold ischemia. We consider a hierarchical model to determine if phosphorylation abundance of a protein at a particular phosphorylation site remains constant or not during cold ischemia...
July 25, 2017: Biometrics
https://www.readbyqxmd.com/read/28735974/characteristics-of-six-small-heat-shock-protein-genes-from-bactrocera-dorsalis-diverse-expression-under-conditions-of-thermal-stress-and-normal-growth
#13
Wei Dou, Yi Tian, Hong Liu, Yan Shi, Guy Smagghe, Jin-Jun Wang
To explore the functions of small heat shock proteins (sHsps) in relation to thermal stress and development in Bactrocera dorsalis (Hendel), one of the most economically important pest species attacking a wide range of fruits and vegetables, six full-length cDNAs of sHsp genes (BdHsp17.7, 18.4, 20.4, 20.6, 21.6 and 23.8) were cloned, and the expression patterns in different developmental stages and tissues, as well as in response to both thermal and 20-hydroxyecdysone (20E) exposures, were examined using real time quantitative PCR...
July 21, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28733934/draft-genome-sequence-of-the-deep-sea-bacterium-moritella-sp-jt01-and-identification-of-biotechnologically-relevant-genes
#14
Robert Cardoso de Freitas, Estácio Jussie Odisi, Chiaki Kato, Marcus Adonai Castro da Silva, André Oliveira de Souza Lima
Deep-sea bacteria can produce various biotechnologically relevant enzymes due to their adaptations to high pressures and low temperatures. To identify such enzymes, we have sequenced the genome of the polycaprolactone-degrading bacterium Moritella sp. JT01, isolated from sediment samples from Japan Trench (6957 m depth), using a Illumina HiSeq2000 sequencer (12.1 million paired-end reads) and CLC Genomics Workbench (version 6.5.1) for the assembly, resulting in a 4.83-Mb genome (42 scaffolds). The genome was annotated using Rapid Annotation using Subsystem Technology (RAST), Protein Homology/analogY Recognition Engine V 2...
July 22, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28733712/fertility-and-ploidy-of-gametes-of-allodiploid-and-allotriploid-loaches-produced-by-diploid-misgurnus-anguillicaudatus-females-and-paramisgurnus-dabryanus-males
#15
Songqian Huang, Xiaojuan Cao, Weimin Wang, Mona Nasr
Artificial and natural hybridization of dojo loach Misgurnus anguillicaudatus (2N = 50, DD for short) and large-scale loach Paramisgurnus dabryanus (2N = 48, PP for short) are well-grown. However, these hybrid loaches have not yet been examined for fertility and ploidy of gametes. Here, histological observations, artificial propagation, observations of embryonic development, larval morphology, and ploidy analyses were conducted to determine the fertility and ploidy of gametes of allodiploid (DP for short) and allotriploid (DDP for short) loaches, produced by DD females × PP males and induced from fertilized eggs of DD females × PP males by cold shock to prevent the second polar body release, respectively...
July 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28727798/cloning-and-expression-of-genes-encoding-heat-shock-proteins-in-liriomyza-trifolii-and-comparison-with-two-congener-leafminer-species
#16
Ya-Wen Chang, Jing-Yun Chen, Ming-Xing Lu, Yuan Gao, Zi-Hua Tian, Wei-Rong Gong, Chang-Sheng Dong, Yu-Zhou Du
The polyphagous agromyzid fly, Liriomyza trifolii, is a significant and important insect pest of ornamental and vegetable crops worldwide. The adaptation of insects to different environments is facilitated by heat shock proteins (HSPs), which play an important role in acclimation to thermal stress. In this study, we cloned and characterized five HSP-encoding genes of L. trifolii (Lthsp20, Lthsp40, Lthsp60, Lthsp70, and Lthsp90) and monitored their expression under different thermal stresses using real-time quantitative PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28724931/assessing-the-shock-state-of-the-lunar-highlands-implications-for-the-petrogenesis-and-chronology-of-crustal-anorthosites
#17
J F Pernet-Fisher, K H Joy, D J P Martin, K L Donaldson Hanna
Our understanding of the formation and evolution of the primary lunar crust is based on geochemical systematics from the lunar ferroan anorthosite (FAN) suite. Recently, much effort has been made to understand this suite's petrologic history to constrain the timing of crystallisation and to interpret FAN chemical diversity. We investigate the shock histories of lunar anorthosites by combining Optical Microscope (OM) 'cold' cathodoluminescence (CL)-imaging and Fourier Transform Infrared (FTIR) spectroscopy analyses...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28722776/esterified-trehalose-analogs-protect-mammalian-cells-from-heat-shock
#18
Jack T Bragg, Hannah K D'Ambrosio, Timothy J Smith, Caroline A Gorka, Faraz A Khan, Joshua T Rose, Andrew J Rouff, Terence S Fu, Brittany J Bisnett, Michael Boyce, Sudhir Khetan, Margot G Paulick
Trehalose is a disaccharide that is produced by many organisms to better enable them to survive environmental stresses, including heat, cold, desiccation, and reactive oxygen species. Mammalian cells do not naturally biosynthesize trehalose; however, when introduced into mammalian cells, trehalose provides protection from the damages associated with freezing and drying. One of the major difficulties in using trehalose as a cellular protectant for mammalian cells is the delivery of this disaccharide into the intracellular environment; mammalian cell membranes are impermeable to the hydrophilic sugar trehalose...
July 19, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28714602/genome-wide%C3%A2-identification-and-characterization%C3%A2-of%C3%A2-hsp-gene-superfamily-in-whitefly-bemisia-tabaci-and-expression-profiling%C3%A2-analysis%C3%A2-under-temperature-stress
#19
Xin-Ru Wang, Chao Wang, Fei-Xue Ban, Dan-Tong Zhu, Shu-Sheng Liu, Xiao-Wei Wang
Heat shock proteins (Hsp) are essential molecular chaperones that play important roles in the stress stimulation of insects. Bemisia tabaci, a phloem feeder and invasive species, can cause extensive crop damage through direct feeding and transmission of plant viruses. Here we employed comprehensive genomics approaches to identity HSP superfamily members in Middle East Asia Minor 1 whitefly genome. In total, we identified 26 Hsp genes, including 3 Hsp90, 17 Hsp70, 1 Hsp60 and 5 sHSP (small heat shock protein, sHSP) genes...
July 17, 2017: Insect Science
https://www.readbyqxmd.com/read/28714514/nuclear-expression-of-y-box-binding-1-is-important-for-resistance-to-chemotherapy-including-gemcitabine-in-tp53-mutated-bladder-cancer
#20
Takahisa Yamashita, Morihiro Higashi, Shuji Momose, Makoto Morozumi, Jun-Ichi Tamaru
The development and acquisition of multiple drug resistance in cancer cells remain a major obstacle in the treatment of bladder cancer. Nuclear translocation of Y box binding-1 (YB-1), which is a member of a family of DNA-binding proteins that contain a cold shock domain, plays a significant role in the acquisition of drug resistance by upregulating expression of the multidrug resistance-1 (MDR-1) gene product, p-glycoprotein. The tumor suppressor protein p53 is thought to be essential for nuclear translocation of YB-1...
August 2017: International Journal of Oncology
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