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None freezing cold injury

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https://www.readbyqxmd.com/read/26643089/cold-hardening-during-long-term-acclimation-in-a-freeze-tolerant-woolly-bear-caterpillar-pyrrharctia-isabella
#1
Shu-Xia Yi, Richard E Lee
The banded woolly bear caterpillar, Pyrrharctia isabella (Lepidoptera: Erebidae), overwinters in leaf litter and survives freezing under natural conditions. Following 18 weeks of cold acclimation at 5°C, all caterpillars could survive 1 week of continuous freezing at -20°C or seven cycles of freezing-thawing at -20°C, but none survived freezing at -80°C. Field-collected caterpillars had a temperature of crystallization of -7.7±0.5°C that decreased significantly to -9.5±0.6°C after 12 weeks of acclimation at 5°C...
January 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/22080028/survival-of-artificially-inoculated-escherichia-coli-and-salmonella-typhimurium-on-the-surface-of-raw-poultry-products-subjected-to-crust-freezing
#2
B D Chaves, I Y Han, P L Dawson, J K Northcutt
Escherichia coli and Salmonella spp. are ubiquitous in the poultry production environment, and hence, their transmission to poultry products is of concern. Industry has widely used freezing as a strategy to halt pathogen growth, and more recently, crust freezing has been suggested as a means to improve mechanical operations, quality, and safety of poultry products. The purpose of this study was to evaluate the effect of crust freezing on the survival of Escherichia coli and Salmonella Typhimurium that were artificially inoculated on the surface of raw poultry products with or without adhering skin...
December 2011: Poultry Science
https://www.readbyqxmd.com/read/19203934/acclimation-to-short-term-low-temperatures-in-two-eucalyptus-globulus-clones-with-contrasting-drought-resistance
#3
F Costa E Silva, A Shvaleva, F Broetto, M F Ortuño, M L Rodrigues, M H Almeida, M M Chaves, J S Pereira
We tested the hypothesis that Eucalyptus globulus Labill. genotypes that are more resistant to dry environments might also exhibit higher cold tolerances than drought-sensitive plants. The effect of low temperatures was evaluated in acclimated and unacclimated ramets of a drought-resistant clone (CN5) and a drought-sensitive clone (ST51) of E. globulus. We studied the plants' response via leaf gas exchanges, leaf water and osmotic potentials, concentrations of soluble sugars, several antioxidant enzymes and leaf electrolyte leakage...
January 2009: Tree Physiology
https://www.readbyqxmd.com/read/16626678/rapid-cold-hardening-increases-membrane-fluidity-and-cold-tolerance-of-insect-cells
#4
Richard E Lee, Krishnan Damodaran, Shu-Xia Yi, Gary A Lorigan
The rapid cold-hardening (RCH) response not only confers dramatic protection against cold-shock (non-freezing) injury, but also "instantaneously" enhances organismal performance. Since cold-shock injury is associated with damage to the cell membrane, we investigated the relationship between RCH and changes in cold tolerance and membrane fluidity at the cellular level. None of the adult flies (Sarcophaga bullata) in the cold-shocked treatment group survived direct transfer to -8 degrees C for 2 h; in contrast, 64...
June 2006: Cryobiology
https://www.readbyqxmd.com/read/12514975/immediate-treatment-of-frostbite-using-rapid-rewarming-in-tea-decoction-followed-by-combined-therapy-of-pentoxifylline-aspirin-vitamin-c
#5
S S Purkayastha, G Bhaumik, S K S Chauhan, P K Banerjee, W Selvamurthy
BACKGROUND & OBJECTIVES: Frostbite, the severest form of cold injury is a serious medical problem for our Armed Forces operating in the snow bound areas at high altitude. Effects of treatment by rapid rewarming in tea decoction followed by combined therapy of pentoxifylline, aspirin and vitamin C were evaluated in amelioration of tissue damage due to experimentally induced frostbite in rats. METHODS: Experiments were conducted in 2 groups (25 each) of albino rats (control i...
July 2002: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/11577720/improvement-of-freezing-tolerance-in-transgenic-tobacco-leaves-by-expressing-the-hic6-gene
#6
K Honjoh, H Shimizu, N Nagaishi, H Matsumoto, K Suga, T Miyamoto, M Iio, S Hatano
A cryoprotective protein, HIC6, was expressed transgenically in tobacco, a cold-sensitive plant, and the localization of the protein within the cell as well as freezing tolerance of the transgenic tobacco was investigated. For constitutive expression of HIC6 in tobacco, its corresponding gene was subcloned into pBI121. Through the transformation with pBI121/hiC6, fifteen transgenic tobacco lines were acquired, out of which twelve lines expressed the HIC6 protein. None of the transgenic tobacco lines, however, showed significant differences in freezing tolerance from the control plants (wild-type and transformed with pBI121) at -1, -3, and -4 degrees C, with the exception that their freezing temperature was -2 degrees C...
August 2001: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/11419357/findings-from-a-simulated-disabled-submarine-survival-trial
#7
C M House, J R House, E H Oakley
Eleven volunteer submariners were exposed to simulated disabled submarine conditions for a maximum of 7 days to determine if the limited clothing and rations provided in escape compartments would compromise survival prospects. Daily rations were 0.568 liters of water (none on Day 1) and 100 g of barley sugar. The subjects wore working rig and the liner from the Mark 10 submarine escape and immersion equipment throughout, and slept in the outer dry suit. Air temperature fell from 22 degrees to 4.4 degrees C over 2 days and then remained at 4...
2000: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/7976665/proposed-toxic-oxidant-inhibitors-fail-to-reduce-brain-edema
#8
K D Judy, G B Bulkley, B E Hedlund, D M Long
Toxic oxidants (oxygen free radicals) have been implicated in the formation of brain edema from ischemia-reperfusion injury or tumor growth. We investigated the ability of an iron chelator, a calcium channel blocker, and a xanthine oxidase inhibitor to reduce formation of brain edema following a cold lesion in cats. The agents were given independently of each other in an attempt to inhibit the Haber-Weiss reaction, prevent Ca++ modulated uncoupling of oxidative phosphorylation, and inhibit the generation of toxic oxidants via xanthine oxidase, respectively...
1994: Acta Neurochirurgica. Supplementum
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