Hirudin and Decorsins of the North American Medicinal Leech Macrobdella decora: Gene Structure Reveals Homology to Hirudins and Hirudin-Like Factors of Eurasian Medicinal Leeches

2019 ◽  
Vol 105 (3) ◽  
pp. 423 ◽  
Author(s):  
Christian Müller ◽  
Phil Lukas ◽  
Sarah Lemke ◽  
Jan-Peter Hildebrandt
Keyword(s):  
Gene Structure ◽  
North American ◽  
Medicinal Leech ◽  
The North ◽  
Macrobdella Decora ◽  
Medicinal Leeches

scholarly journals Salivary Transcriptome of the North American Medicinal Leech, Macrobdella decora

2010 ◽  
Vol 96 (6) ◽  
pp. 1211-1221 ◽  
Author(s):  
Gi-Sik Min ◽  
Indra Neil Sarkar ◽  
Mark E. Siddall
Keyword(s):  
North American ◽  
Medicinal Leech ◽  
The North ◽  
Macrobdella Decora

Twelve variable microsatellite loci for the North American medicinal leech, Macrobdella decora

2004 ◽  
Vol 4 (3) ◽  
pp. 491-493 ◽  
Author(s):  
REBECCA B. BUDINOFF ◽  
AIMEE M. SIDDALL ◽  
MARK E. SIDDALL
Keyword(s):  
North American ◽  
Microsatellite Loci ◽  
Medicinal Leech ◽  
The North ◽  
Macrobdella Decora

scholarly journals Novel Role for Aeromonas jandaei as a Digestive Tract Symbiont of the North American Medicinal Leech

2006 ◽  
Vol 73 (2) ◽  
pp. 655-658 ◽  
Author(s):  
Mark E. Siddall ◽  
Paul L. Worthen ◽  
Matthew Johnson ◽  
Joerg Graf
Keyword(s):  
Digestive Tract ◽  
Dna Sequences ◽  
North American ◽  
Geographic Area ◽  
Medicinal Leech ◽  
Gut Bacteria ◽  
Biochemical Tests ◽  
The North ◽  
Macrobdella Decora

ABSTRACT The gut bacteria of the North American medicinal leech, Macrobdella decora, were characterized. Biochemical tests and DNA sequences indicated that Aeromonas jandaei is the dominant culturable symbiont in leeches from a broad geographic area. In this work we identified a new habitat for A. jandaei, and here we suggest that there is unexpected specificity between leeches and Aeromonas species.

The distribution of putative neurosecretory cells in the central nervous system of the North American medicinal leech Macrobdella decora

1979 ◽  
Vol 57 (10) ◽  
pp. 1905-1914 ◽  
Author(s):  
Rodney A. Webb ◽  
I. Orchard
Keyword(s):  
Ventral Nerve Cord ◽  
Medicinal Leech ◽  
Neurosecretory Cells ◽  
Nerve Cells ◽  
Dense Granules ◽  
The North ◽  
Macrobdella Decora ◽  
Cell Groups ◽  
The Central Nervous System ◽  
Neurohemal Organs

Nerve cells that displayed a distinct Tyndall blue–white effect were observed in the supra- and sub-oesophageal ganglia, the ventral nerve cord ganglia, and the posterior ganglion of the Gnathobdellid leech Macrobdella decora. These cells formed four anatomically distinct groups in the supraoesophageal ganglion and occupied characteristic and analogous positions in the other ganglia. Light microscopy of these blue–white cells revealed histochemical properties not seen in other nerve cells. The perikarya of the four groups of blue–white cells in the supraoesophageal ganglion were examined with the electron microscope and found to contain large membrane-bounded electron-dense granules similar to those observed in proven neurosecretory cells. Tracts from two of these cell groups possibly form primitive neurohemal organs. A neurosecretory role for the blue–white cells is suggested.

Salt and Water Regulation in Macrobdella Decora (Hirudinea: Gnathobdelliformes) Under Osmotic Stress

1987 ◽  
Vol 131 (1) ◽  
pp. 337-349
Author(s):  
ANGELA WENNING
Keyword(s):  
Medicinal Leech ◽  
Central Canal ◽  
Urine Flow ◽  
Water Regulation ◽  
Transport Capacity ◽  
Artificial Blood ◽  
The North ◽  
Macrobdella Decora ◽  
External Salinity ◽  
Blood Meals

The anatomy, infrastructure and innervation of the nephridia of the North American leech, Macrobdella decora (Say), are described. The osmotic concentrations of blood, crop fluid and final urine, as well as urine flow under normal conditions, were found to be similar to those of the well-studied European medicinal leech, Hirudo medicinalis L. The capacity of the excretory system after changes in external salinity, and after salt and water loading with artificial blood meals, was investigated. In contrast to H. medicinalis, M. decora does not tolerate hypertonic environments and is less efficient in rapidly excreting excess salt and water. Three factors make salt and water regulation in M. decora different from that in H. medicinalis: a slower fluid resorption from the crop, a limited transport capacity of the primary urine-forming cells, and a lower rate of salt reabsorption in the central canal. Note: Dedicated to Professor Dr Ernst Florey on the occasion of his 60th birthday.

1588: The Bicalutamide Early Prostate Cancer Program: Findings of the North American Trial at 7.7 Years' Median Follow-Up

2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
North American ◽  
Early Prostate Cancer ◽  
The North ◽  
Cancer Program
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