Altered heat nociception in cockroach Periplaneta americana L. exposed to capsaicin

Altered heat nociception in cockroach Periplaneta americana L. exposed to capsaicin

Some natural alkaloids, e.g. capsaicin and camphor, are known to induce a desensitization state, causing insensitivity to pain or noxious temperatures in mammals by acting on TRP receptors. Our research, for the first time, demonstrated that a phenomenon of pharmacological blockade of heat sensitivity may operate in American cockroach, Periplaneta americana (L.). We studied the escape reaction ...

Cholesterol turnover in the American cockroach, Periplaneta americana (L.).

The Odorous Attractant of the American Cockroach, Periplaneta Americana (l.)

1. Procedures have been developed for studying quantitatively the response of the male American cockroach to the odorous attractant of the female. 2. The percentage of male roaches responding to extracts of the attractant of the female has been found to vary with the log of the concentration of the attractant throughout a wide range. 3. Adaptation to the olfactory stimulus has been demonstrated...

Modulation by octopamine of olfactory responses to nonpheromone odorants in the cockroach, Periplaneta americana L.

Olfactory receptor cells in insects are modulated by neurohormones. Recordings from cockroach olfactory sensilla showed that a subset of sensory neurons increase their responses to selected nonpheromone odorants after octopamine application. With octopamine application, recordings demonstrated increased firing rates by the short but not the long alcohol-sensitive sensilla to the nonpheromone vo...

In Silico Identification of Potential American Cockroach (Periplaneta americana) Allergens

BACKGROUND Cockroaches have been recognized as a powerful indoor allergen. Cockroach allergy can be a major factor in serious asthma and nasal allergy. Bioinformatics tools have been developed to identify potential allergens. The present study was conducted to identify potential allergens in Periplaneta americana (Linnaeus). METHODS The study focused on the identification of potential allerge...