نتایج جستجو برای: defensive enzymes
تعداد نتایج: 133837 فیلتر نتایج به سال:
Defensive behaviors reflect underlying emotion states, such as fear. The hypothalamus plays a role in such behaviors, but prevailing textbook views depict it as an effector of upstream emotion centers, such as the amygdala, rather than as an emotion center itself. We used optogenetic manipulations to probe the function of a specific hypothalamic cell type that mediates innate defensive response...
Parasites are designed by evolution to invade the host and survive in its organism until they are ready to reproduce. Parasites release a variety of molecules that help them to penetrate the defensive barriers and avoid the immune attack of the host. In this respect, particularly interesting are enzymes and their inhibitors secreted by the parasites. Serine-, aspartic-, cysteine-, and metallopr...
Glandular chemical defence relying on the action of salicylaldehyde is characteristic for Chrysomela leaf beetle larvae. The salicylaldehyde precursor salicin, sequestered from salicaceous host plants, is deglucosylated and the aglycon further oxidized by a salicyl alcohol oxidase (SAO) to the respective aldehyde. SAOs, key enzymes in salicin-based glandular chemical defence, were previously id...
BACKGROUND Defensive medicine is becoming more frequent behaviour and has an impact on the economic 'health' of national healthcare systems. AIM The aim of this study was to clarify the impact of defensive medicine on gastroenterological practices in Lombardy. METHODS Gastroenterologists attending the Lombardy Annual Gastroenterological Conference received a questionnaire based on multiple ...
The ability of animals to respond to life-threatening stimuli is essential for survival. Although vision provides one of the major sensory inputs for detecting threats across animal species, the circuitry underlying defensive responses to visual stimuli remains poorly defined. Here, we investigate the circuitry underlying innate defensive behaviours elicited by predator-like visual stimuli in m...
UNLABELLED The central amygdala (CeA) has a key role in learning and expression of defensive responses. Recent studies indicate that somatostatin-expressing (SOM(+)) neurons in the lateral division of the CeA (CeL) are essential for the acquisition and recall of conditioned freezing behavior, which has been used as an index of defensive response in laboratory animals during Pavlovian fear condi...
Parasites are designed by evolution to invade the host and survive in its organism until they are ready to reproduce. Parasites release a variety of molecules that help them to penetrate the defensive barriers and avoid the immune attack of the host. In this respect, particularly interesting are enzymes and their inhibitors secreted by the parasites. Serine-, aspartic-, cysteine-, and metallopr...
The above oath is what every physician is bound to follow, but what happens in real practice is quite alarming. The so-called divine profession has lost its glory due to the intrusion of an evil namely ‘defensive medicine.’ Defensive medicine in simple words is departing from normal medical practice as a safeguard from litigation. It occurs when a medical practitioner performs treatment or proc...
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