Higher plants produce both high mo1 wt (in the range of 70,000-110,000) and LMW (in the range of 15,000-30,000) HSPs in response to heat-stress conditions. During periods of heat stress, plant cells produce an abundance of LMW HSPs that are encoded by gene families (Vierling, 1991). The physiological function of these proteins remains obscure, but the evolutionary conservation of this response ...

Acute temperature stress in animals results in increases in heat shock proteins (HSPs) and stress hormones. There is evidence that stress hormones influence the magnitude of the heat shock response; however, their role is equivocal. To determine whether and how stress hormones may affect the heat shock response, we capitalized on two lines of rainbow trout specifically bred for their high (HR) ...

Extracts of mistletoe (Viscum album) are intensively used in complementary medicine, but their mechanisms are not fully understood in most cases, and the effects on metabolism have not been investigated in detail. However, some biologically active natural products are well known to provoke unexpected cellular responses. They reduce overexpression of heat shock proteins (Hsps) in cancer ce...

Environmentally relevant stressors alter the memory-forming process in Lymnaea following operant conditioning of aerial respiration. One such stressor is heat. Previously, we found that following a 1 h heat shock, long-term memory (LTM) formation was enhanced. We also had shown that the heat stressor activates at least two heat shock proteins (HSPs): HSP40 and HSP70. Here, we tested two hypothe...

We compare the properties and activation of heat-shock transcription factor (HSF1) and the synthesis of a major family of heat-shock proteins (HSP70) in lizard species inhabiting ecological niches with strikingly different thermal parameters. Under normal non-heat-shock conditions, all desert-dwelling lizard species studied so far differ from a northern, non-desert species (Lacerta vivipara) in...

KEY WORDS heat shock proteins, Chlamydia trachomatis, immunity eat shock proteins (hsps) are among the most abundant proteins in nature and are highly conserved amongst both eucaryotes and procary-otes. The heat shock response is an important survival mechanism that safeguards the cell or microbe from conditions of stress. The response is triggered transcriptionally and results in the productio...

Varieties of proteins are induced in livestock when exposed to environmental stress, among them heat shock (HSPs). HSPs that provide antioxidant protection cells as well thermotolerance. They function chaperones, helping fold, unfold, and refold stress-denatured proteins. Further, represent one the most important physiological parameters for thermotolerance livestock. This review aims highlight...

KEY WORDS heat shock proteins, Chlamydia trachomatis, immunity eat shock proteins (hsps) are among the most abundant proteins in nature and are highly conserved amongst both eucaryotes and procary-otes. The heat shock response is an important survival mechanism that safeguards the cell or microbe from conditions of stress. The response is triggered transcriptionally and results in the productio...

The function of one or more heat shock proteins (HSPs) may be to confer protection of cells against thermal damage. We examined the induction kinetics of thermotolerance and the synthesis of HSPs in murine tumor models. Squamous cell carcinomas (SCC VII/SF) or radiation-induced fibrosarcomas (RIF) were implanted in the flanks of C3H mice. These flank tumors were first exposed to an elevated tem...