Feeding inhibition by neuropeptide Y

Article Abstract:

Neuropeptide Y interacts with OB protein or signalling processes which depend on OB protein and regulate body energy through their effect on feeding responses. OB protein in the lateral ventricle suppresses downstream signal transduction and changes the binding of exogenous neuropeptide Y to its receptors. These receptors are important for feeding. Mice without neuropeptide Y respond to peripheral OB protein. Disruption of this interaction may lead to obesity and non-insulin-dependent diabetes mellitus.

Analysis, Physiological aspects, Leptin, Ingestion, Neuropeptide Y

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Inhibition of oxytocin receptor function by direct binding of progesterone

Article Abstract:

Pregnancy maintenance in animals relies on the steroid hormone progesterone (P4), which maintains uterine inactivity by reducing uterine sensitivity to the uterotonic peptide hormone oxytocin. A new study reveals that P4's effect on uterine sensitivity to oxytocin involves a non-genomic action on the uterine oxytocin receptor, which belongs to the G-protein-coupled receptor family. This is the first evidence of a functional interaction between a G-protein linked member and a steroid.

Research, Steroid hormones, Steroid receptors, Progesterone, Oxytocin, Progesterone receptors

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Feeding by manidibular raking in a snake: The tiny threadsnake has a unique way of devouring ants before they can strike back

Article Abstract:

Threadsnakes are found to have a unique feeding mechanism in which the tooth-bearing elements of the lower jaw can rotate in and out of the mouth, pulling prey into the oesophagus. 'Mandibular raking' enables the threadsnakes to transport prey quickly; and it may be related to its hazardous foraging strategy, where they invade ant nests tenaciously defended by worker ants.

Behavior, Blind snakes

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