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Heat prostration

Scott N Williamson, Isabel C Barrio, David S Hik, John A Gamon
Arctic warming is resulting in reduced snow cover and increased shrub growth, both of which have been associated with altered land surface-atmospheric feedback processes involving sensible heat flux, ground heat flux and biogeochemical cycling. Using field measurements, we show that two common Arctic shrub species (Betula glandulosa and Salix pulchra), which are largely responsible for shrub encroachment in tundra, differed markedly in albedo and that albedo of both species increased as growing season progressed when measured at their altitudinal limit...
November 2016: Global Change Biology
Junmei Chen, Chandra Thammina, Wei Li, Hao Yu, Huseyin Yer, Rania El-Tanbouly, Manon Marron, Lorenzo Katin-Grazzini, Yongqin Chen, John Inguagiato, Richard J McAvoy, Karl Guillard, Xian Zhang, Yi Li
Prostrate turf varieties are desirable because of their increased low mowing tolerance, heat resistance, traffic resistance and ground coverage compared with upright varieties. Mutation breeding may provide a powerful tool to create prostrate varieties, but there are no simple, straightforward methods to screen for such mutants. Elucidation of the molecular basis of the major 'green revolution' traits, dwarfism and semi-dwarfism, guided us to design a simple strategy for isolating dwarf mutants of perennial ryegrass (Lolium perenne L...
2016: Horticulture Research
Ursula Ladinig, Manuel Pramsohler, Ines Bauer, Sonja Zimmermann, Gilbert Neuner, Johanna Wagner
Strong solar irradiation in combination with still air and dry soil can cause prostrate high-mountain plants to heat up considerably and ultimately suffer heat damage. Such heat damage has been repeatedly shown for vegetative structures, but not for reproductive structures, which we expected to be particularly vulnerable to heat. Heat effects on cold-adapted plants may increase with rising global temperatures and the predicted increase in heat waves. We have tested the heat tolerance of reproductive versus vegetative shoots at different reproductive stages, comparing ten common plant species from different elevation belts in the European Alps...
April 2015: Oecologia
M J Quinn, D I Bannon, A M Jackovitz, T L Hanna, A A Shiflett, M S Johnson
The explosive 3-nitro-1,2,4-triazol-5-one (NTO) is an insensitive formulation developed to replace high energetics that are susceptible to accidental detonation from heat, shock, and impact. Although studies have shown NTO to be nontoxic at acute exposures, recent subacute and subchronic tests have demonstrated effects on testes and subsequent sperm production in rats. This study assessed endocrine disruption as a potential mechanism for these reproductive effects via the Hershberger and uterotrophic bioassays...
September 2014: International Journal of Toxicology
S Teichmann, V Turković, R Dörfelt
OBJECTIVE: Heatstroke is a life-threating emergency in dogs. The aim of this retrospective study was to analyse the sources of heat stroke in dogs, predisposing and prognostic factors, results of physical examination and clinical pathology as well as the course of this condition and appropriate treatment. MATERIAL AND METHODS: Patient histories of 12 dogs diagnosed with heat stroke over a 5.5-year period were analysed retrospectively. Normality was tested using the Kolmogrow-Smirnow Test and analysed using T-tests, the Chi-square test and the Mann-Whitney U-test...
2014: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
Hari Shanker Sharma, Dafin Fior Muresanu, Ranjana Patnaik, Adina Dora Stan, Vitalie Vacaras, Laura Perju-Dumbrav, Badisor Alexandru, Anca Buzoianu, Iulian Opincariu, Preeti Kumaran Menon, Aruna Sharma
The possibility that cerebrolysin, a mixture of several active fragments of neurotrophic factors and peptides induces neuroprotection following nanoparticles induced exacerbation of brain damage in heat stroke was examined in a rat model. For this purpose, the therapeutic efficacy of Cerebrolysin (2.5 or 5 ml/kg) recommended for stroke treatment was used in comparison with other drugs in standard doses recommended for such therapy in clinical situations e.g., levetiracetam (44 mg/kg), pregabalin (200 mg/kg), topiramate (40 mg/kg,i...
September 2011: Journal of Nanoscience and Nanotechnology
Hari Shanker Sharma, Syed F Ali, Z Ryan Tian, Saber M Hussain, John J Schlager, Per-Ove Sjöquist, Aruna Sharma, Dafin F Muresanu
The possibility that chronic exposure of nanoparticles may alter stress reaction and brain pathology following hyperthermia was examined in a rat model. Engineered nanoparticles from Ag or Cu (approximately equal to 50-60 nm) were administered (30 mg/kg, i.p.) once daily for 1 week in young male rats. On the 8th day these animals were subjected to 4 h heat stress at 38 degrees C in a BOD incubator. In these animals stress symptoms, blood-brain barrier (BBB) permeability, cognitive and motor functions and brain pathology were examined...
August 2009: Journal of Nanoscience and Nanotechnology
E Waaler
1. The S, R, and R(n) variants of the Shiga bacillus are equally toxic. 2. The effect of the toxin upon rabbits is the same, whether it is derived from filtrates of broth cultures (3 to 6 days old), or is obtained by autolysis of the killed bacteria, grown on agar surface. Rabbits show in both cases prostration, loss in weight, paralysis, and diarrhea. 3. When the toxin is heated to 80 degrees C. for 1 hour, its poisonous effect nearly disappears, but its immunizing ability is unaltered. This heated toxin induces a formation of antitoxin, which can protect against the unheated toxins...
January 1, 1936: Journal of Experimental Medicine
J W Jobling, W Petersen
1. Sera from which the protective lipoids (unsaturated fatty acids) have been removed are toxic for the homologous animal. 2. The toxicity is due to three factors: (a) an alteration in the mechanism of coagulation, with resulting intravascular coagulation; (b) the exposure of the native serum proteins; (c) the formation of toxic split products (primary proteoses) by autolysis. 3. A definite maximum of toxicity can be determined, with a final stage of atoxicity due to continued autolysis. 4. Hirudin and sodium citrate do not protect animals...
May 1, 1914: Journal of Experimental Medicine
No abstract text is available yet for this article.
May 1948: Southern Medical Journal
R O Schofield
No abstract text is available yet for this article.
August 1934: California and Western Medicine
Abeer K Al Ghumlas, Abdel Galil M Abdel Gader, Mansour F Hussein, Ahmed Al Haidary, James G White
Camels and many other desert animals are uniquely adapted to conserve water and other fluids in order to survive intense heat for long periods. Earlier studies have suggested that human platelets may be the trigger for the coagulopathy involved in heat prostration and stroke. The present study has compared the resistance of camel and human platelets to heat in order to see if they might help to protect camels from the effects of high body temperature for prolonged periods. The findings demonstrate that camel platelets are significantly less sensitive to heat than human platelets...
May 2008: Platelets
E Whitney, A P Roz, G A Rayner
Four strains of C. gapperi virus were isolated from 3 Clethrionomys gapperi and 47 strains of Microtus virus from 15 Microtus pennsylvanicus and 1 Mus musculus. One of the Microtus strains was isolated from a pool of 20 mites while the others were from rodent tissues. These agehts were insensitive to ether and sodium desoxycholate, withstood freezing at -70 C for 3 years and lyophilization without loss of titer, and were not killed when heated at 60 C for 1 hour. Their size as determined by filtration was less than 50 mg and greater than 20-35 mmicro...
January 1970: Journal of Wildlife Diseases
S A Borges, A V Fischer da Silva, A Majorka, D M Hooge, K R Cummings
Individually caged male Cobb broilers (24), 44 d of age, were used to evaluate effects of heat stress (1 d of data collection) and dietary electrolyte balance (DEB; Na + K - Cl, mEq/kg from 1 d of age). During summer rearing, mortality was variable, but DEB 240 improved growth, feed conversion ratio, water intake, and water:feed ratio vs. DEB 0. The temperature sequence for heat stress was 24 to 32 degrees C in 30 min, 32 to 36 degrees C in 30 min, 36 to 37 degrees C in 15 min, and 37 to 41 degrees C in 45 min...
September 2004: Poultry Science
No abstract text is available yet for this article.
November 1951: Pediatrics
Cystic fibrosis, a disease thought to be transmitted as a recessive genetic trait, is found as a disease in about one in 1,000 to one in 10,000 births. It involves all of the exocrine glands with presenting symptoms dependent upon the extent of involvement of any group of glands. Many aspects of the disease can be corrected by substitution therapy. This applies particularly to the use of animal pancreas for the steatorrhea and salt for prevention of heat prostration. Unfortunately, the obstructive pulmonary disease with secondary bronchial infections can only be treated symptomatically by the use of mucus thinning agents, postural drainage, and antibiotics...
April 1965: California Medicine
No abstract text is available yet for this article.
September 1961: Klinicheskaia Meditsina
No abstract text is available yet for this article.
May 1960: California Medicine
No abstract text is available yet for this article.
September 1953: Clinical Proceedings—Children's Hospital of the District of Columbia
I Harata
No abstract text is available yet for this article.
April 1970: Pennsylvania Medicine
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