Biological activity of diuretic factors on the anterior midgut of the blood-feeding bug, Rhodnius prolixus.

@article{TeBrugge2009BiologicalAO,
  title={Biological activity of diuretic factors on the anterior midgut of the blood-feeding bug, Rhodnius prolixus.},
  author={Victoria Te Brugge and Juan P. Ianowski and Ian Orchard},
  journal={General and comparative endocrinology},
  year={2009},
  volume={162 1},
  pages={
          105-12
        }
}
The neuropeptide CCHamide2 regulates diuresis in the Chagas disease vector Rhodnius prolixus
TLDR
The neuropeptide precursor CCHamide2 is involved in the regulation of the post-prandial diuresis in Rhodnius prolixus, the first report of a hormone presenting opposite effects in the two osmoregulatory organs in insects, probably reflecting the importance of a well-tuned diuretic process in hematophagous insects during different moments after the blood meal.
Identification of the elusive peptidergic diuretic hormone in the blood-feeding bug Rhodnius prolixus: a CRF-related peptide
TLDR
This study employed molecular techniques and mass spectrometry to determine the sequence of a native CRF-like peptide from R. prolixus (Rhopr DH) and confirmed the distribution and localization of RhoprDH using in situ hybridization and immunohistochemistry, and demonstrated its potent biological activity on both the anterior midgut and Malpighian tubules.
Fluid Secretion by Malpighian Tubules of Rhodnius prolixus: Neuroendocrine Control With New Insights From a Transcriptome Analysis
TLDR
Recent discoveries into the neuroendocrine control of the rapid post-prandial diuresis in R. prolixus are focused on in order to emphasize new insights from a transcriptome analysis of Malpighian tubules taken from unfed and fed bugs.
Anti-diuresis in the Blood-gorging Bug, Rhodnius prolixus: The Role of CAPA Peptides
TLDR
The findings suggest that numerous tissues are regulated by the CAPA, and serotonin-stimulated fluid secretion by MTs and fluid absorption by the anterior midgut are reduced by the anti-diuretic peptide, RhoprCAPA-α2.
Cardioacceleratory and myostimulatory activity of allatotropin in Triatoma infestans.
The neuropeptide RhoprCCHamide2 inhibits serotonin-stimulated transcellular Na+ transport across the anterior midgut of the vector of Chagas disease, Rhodnius prolixus.
TLDR
The results suggest that Na+ undergoes active transport via an apical amiloride- sensitive Na+ channel and a basolateral ouabain-sensitive Na+/K+-ATPase, while Cl- is transported through a passive paracellular pathway.
The antidiuretic neurohormone RhoprCAPA-2 downregulates fluid transport across the anterior midgut in the blood-feeding insect Rhodnius prolixus.
TLDR
It is hypothesized that the antidiuretic neurohormone RhoprCAPA-2 functions to coordinate the transport activity of the anterior midgut and Malpighian tubules so that the rate of fluid transport into the haemolymph by the anteriorMidgut matches the transport rate of MalPighian Tubules to maintain the volume and ion composition of haemarymph.
Functional proteomics of neuropeptidome dynamics during the feeding process of Rhodnius prolixus.
TLDR
This is the first report suggesting a role for NPLP1, involving the peptides processed from this precursor in the hormonal control of the production and/or release of saliva, in hematophagous insects.
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References

SHOWING 1-10 OF 43 REFERENCES
EXCRETION IN THE BLOOD-SUCKING BUG, RHODNIUS PROLIXUS STAL. II. THE NORMAL COURSE OF DIURESIS AND THE EFFECT OF TEMPERATURE.
  • S. Maddrell
  • Medicine, Biology
    The Journal of experimental biology
  • 1964
TLDR
Diuresis proceeds at a surprisingly constant rate and is shown to be a reflexion of the fact that the concentration of the diuretic hormone in the haemolymph at this time is always higher than that which causes the maximum response by the Malpighian tubules.
The distribution of a CRF-like diuretic peptide in the blood-feeding bug Rhodnius prolixus.
TLDR
The presence of the peptide in neurohaemal terminals of the CC and abdominal nerves that are distinct from serotonin-containing terminals indicates that the peptides is capable of being released into the haemolymph and that this release can be independent of the release of serotonin.
Amino acid sequence and biological activity of a calcitonin-like diuretic hormone (DH31) from Rhodnius prolixus
TLDR
Second messenger pathways in response to Rhopr/Dippu-DH31 increases the frequency of muscle contractions of both tissues and found no increase or decrease in cyclic adenosine monophosphate (cyclic AMP) content of the Malpighian tubules.
Serotonin: a coordinator of feeding-related physiological events in the blood-gorging bug, Rhodnius prolixus.
  • I. Orchard
  • Biology
    Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
  • 2006
Absorption of fluid from the anterior midgut in Rhodnius
Differential actions of diuretic factors on the Malpighian tubules of Rhodnius prolixus
TLDR
It is proposed that 5HT and a native CRF-related peptide similar to ZooneDH activate the same second messenger systems and ion transporters in the upper tubule cells and is utilized to maintain high rates of fluid secretion during the post-feeding diuresis and is additionally used at times when KCl reabsorption is unnecessary or detrimental.
Distribution of FMRFamide‐related peptides in the blood‐feeding bug Rhodnius prolixus
TLDR
The results suggest the existence of a number of FMRFamide‐related peptides in Rhodnius which may have roles in both central and peripheral transmission, may be released as neurohormones and may have endocrine functions in the gut.
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