geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Identical cellular distribution of all abundant neuropeptides in the major abdominal neurohemal system of an insect (Periplaneta americana)


, : Identical cellular distribution of all abundant neuropeptides in the major abdominal neurohemal system of an insect (Periplaneta americana). Journal of Comparative Neurology 452(3): 264-275

The median neurosecretory cells in abdominal ganglia of insects synthesize a number of putative hormones, which are abundant in the abdominal perisympathetic organs (PSOs). The peptide inventory of these prominent neurohemal release sites is best investigated in the American cockroach and strongly differs from that of head/thoracic neurohemal organs. In this study, we found a complete colocalization of all abundant neuropeptides in this hormonal system, including periviscerokinin-1 and -2, pyrokinin-5, YLSamide, VEAacid, and SKNacid. The first immunoreactive cells were detected on day 18 of embryonic development and already contained the complete set of peptides. By using antisera against the above-mentioned peptides, the development of this neurohormonal system could be studied and is described in detail. Subsequent electron microscopic immunogold stainings in PSO preparations revealed the costorage of PSO peptides in a single vesicle species. Surprisingly, all these peptides were found in axons containing clear vesicles, whereas all axons with dense core vesicles were totally devoid of immunoreactivity. Unlike the axons with dense core vesicles, immunostained axons ramify in the centre of the PSO but exhibit only rare morphological signs of exocytosis. Instead, putative release sites of the clear vesicle-containing axons were detected peripherally to the PSOs, namely, on the hyperneural muscle.

US$19.90

PMID: 12353222

DOI: 10.1002/cne.10382


Other references

Kim, H.; Hur, M.; Moon, H-Won.; Park, C.Min.; Cho, J-Hee.; Park, K.Sik.; Lee, K.; Chang, S., 2012: Pre- and post-transfusion testing for hepatitis B virus surface antigen and antibody in blood recipients: a single-institution experience in an area of high endemicity. Hepatitis B remains the most common transfusion-transmitted viral infection. We explored the current status of pre-transfusion screening and post-transfusion follow-up testing for hepatitis B virus (HBV) surface antigen (HBsAg) and antibodies (ant...

Frigerio, M.; Mazzali, C.; Paganoni, A.Maria.; Ieva, F.; Barbieri, P.; Maistrello, M.; Agostoni, O.; Masella, C.; Scalvini, S., 2017: Trends in heart failure hospitalizations, patient characteristics, in-hospital and 1-year mortality: A population study, from 2000 to 2012 in Lombardy. This study was undertaken to evaluate trends in heat failure hospitalizations (HFHs) and 1-year mortality of HFH in Lombardy, the largest Italian region, from 2000 to 2012. Hospital discharge forms with HF-related ICD-9 CM codes collected from 200...

Rasmussen, E., 1984: Tulips as annuals and biennials. Meddelelse Statens planteavlsforsog, 86(1798)

Kimpinski J.; Platt H.W., 1983: Washing of potatoes to remove nematodes and to observe effect on storage rot diseases. Washing of potatoes in the laboratory indicated that only a few 2nd-stage juveniles of the clover-cyst nematode, Heterodera trifolii, were present in soil on the surface of potato tubers. No mature dead females, or cysts were detected. About 90% o...

Swaisgood, Ronald R., 2006: What can captive breeding do for conservation and what can behavior research do for captive breeding?. How can we justify confining animals in small enclosures, often far removed from many salient features of the animal's natural environment? This question speaks to concerns of animal welfare, and I see it as a challenge to behaviorists and ma...

Woisard, A.; Fazakerley, G.V., 1986: Ultrapolymorphic DNA: B, A, Z, and Z* conformations of poly(dA-dC).poly(dG-dT). The synthetic polynucleotide poly(dA-dC).poly(dG-dT) at low ionic strength is shown to undergo conformational changes in the presence of [tris(2-aminoethyl)amine]zinc(II) chloride (ZnN4). At 100 microM ZnN4, circular dichroism and 31P NMR spectra...

Frolov, A.K., 1983: Chromosome changes in the blood lymphocytes compared to the strength of the immunity in parotitis virus infection and vaccination. Alterations of chromosomes in T-lymphocytes of peripheral blood reflected their participation in immune reactions. The associative index of acrocentric chromosomes in T-lymphocytes depended on their proliferative and migratory activity in the orga...

Nawaz, S.; Hashizumi, T.L.; Markham, N.E.; Shroyer, A.L.; Shroyer, K.R., 1997: Telomerase expression in human breast cancer with and without lymph node metastases. Telomerase is a ribonucleoprotein enzyme that synthesizes telomeric DNA onto the ends of chromosomes, thereby preventing the replication-dependent shortening of these ends. Telomerase activity is detected in a wide range of cancers of various tiss...

Bouchet, R.L., 1952: The use of sodium 2,4-dichlorophenoxyacetate and ammonium dini-trophenate as selective herbicides for vegetable and flower crops. The following recommendations are based on 5 years' practical trials at the Experimental Station of La Dargoire, France. For weeding carrots and other vegetables of slow germination, ammonium dinitrophenate should be used as a pre-emergence s...

Mehnert, A., 2015: In Process Citation. Psychotherapie, Psychosomatik, Medizinische Psychologie 65(12): 486-487