The red cells of patients with chronic hemolytic anemia due to cold agglutinins are agglutinated by antiglobulin serum in a nongamma reaction due to the coating of beta-globulins, C'4 and C'3. The red cells of such patients are abnormally resistant to C' hemolysis by cold agglutinin. Normal red cells can be made equally resistant to C' hemolysis by incubation with cold agglutinin and normal ser...

F OUR trials were conducted with boar spermatozoa to determine the effects of dilution rate, seminal plasma content and extender composition on susceptibility to cold shock and the development of resistance to cold during 30 C incubation. Acrosome morphology and sperm motility were used to assess damage by cold shock. The susceptibility of boar spermatozoa to cold shock increased as the dilutio...

Reconfiguration of the metabolome is a key component involved in the acclimation to cold in plants; however, few studies have been devoted to the analysis of the overall metabolite changes after cold storage of fruits prior to consumption. Here, metabolite profiling of six peach varieties with differential susceptibility to develop mealiness, a chilling-injury (CI) symptom, was performed. Accor...

Thermal environments can influence many fitness-related traits including life span. Here, we assess whether longevity in Drosophila melanogaster can experimentally evolve as a correlated response to cold-stress selection, and whether genotype-by-temperature and sex-by-temperature interactions are significant components of variation in life span. Three replicated S lines were cold-stress selecte...

13 There is increasing interest in comparing species of related organisms for their susceptibility 14 to thermal extremes in order to evaluate potential vulnerability to climate change. 15 Comparisons are typically undertaken on individuals collected from the field with or without 16 a period of acclimation. However this approach does not allow the potential contributions of 17 environmental an...

Hardy plants can maintain their normal physiological metabolism in cold winter and against the cold weather by regulating themselves. Around this natural phenomenon, a large number of researchers conducted researches on cold resistance of hardy plants and the mechanism of cold resistance respectively from the point of cell membrane structure and characteristics, physiological metabolism, growth...

BAT-controlled thermogenic activity is thought to be required for its capacity to prevent the development of insulin resistance. This hypothesis predicts that mediators of thermogenesis may help prevent diet-induced insulin resistance. We report that the mitochondrial fusion protein Mitofusin 2 (Mfn2) in BAT is essential for cold-stimulated thermogenesis, but promotes insulin resistance in obes...

Accumulated evidence has revealed the mitigation effects of exogenous melatonin on cold stress in plants. In this study, to investigate defensive roles banana under stress, we researched influences chlorophyll fluorescence parameters, antioxidant defense indexes and expression levels cold-responsive genes cold-stressed ‘Brazil’ seedlings. Results showed that 100 ?M achieved best cold-resistance...

Arabidopsis thaliana (L.) Heynh. has been described as a freezing-tolerant species based on freezing-resistance assays. Nonetheless, this type of experiment does not discriminate between freezing-tolerance and freezing-avoidance mechanisms. The purpose of this paper was to determine which of these two freezing-resistance mechanisms is responsible for freezing resistance in A. thaliana. This was...