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1-20 of 32
Keywords: Hirudo medicinalis
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Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2008) 211 (4): 630–641.
Published: 15 February 2008
... observed in human occipital cortex during visual stimulation. Proc. Natl. Acad. Sci. USA 98 , 9391 -9395. Dickinson, M. H. and Lent, C. M. (1984). Feeding behavior of the medicinal leech, Hirudo medicinalis L. J. Comp. Physiol. A 154 , 449 -455. Dierkes, P. W., Hochstrate, P. and Schlue, W...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2006) 209 (9): 1746–1756.
Published: 1 May 2006
...Kevin M. Crisp; Karen A. Mesce SUMMARY The biological mechanisms of behavioral selection, as it relates to locomotion, are far from understood, even in relatively simple invertebrate animals. In the medicinal leech, Hirudo medicinalis , the decision to swim is distributed across populations of swim...
Journal Articles
Andrea Cornford, William B. Kristan, III, Sierra Malnove, William B. Kristan, Jr, Kathleen A. French
Journal:
Journal of Experimental Biology
J Exp Biol (2006) 209 (3): 493–503.
Published: 1 February 2006
... for correspondence (e-mail: [email protected]) 12 12 2005 © The Company of Biologists Limited 2006 2006 annelid anterior brain central nervous system cephalic brain Hirudo medicinalis leech subesophageal ganglion A centralized nervous system with a cephalic concentration of neurons...
Journal Articles
A cephalic projection neuron involved in locomotion is dye coupled to the dopaminergic neural network in the medicinal leech
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Journal:
Journal of Experimental Biology
J Exp Biol (2004) 207 (26): 4535–4542.
Published: 15 December 2004
...Kevin M. Crisp; Karen A. Mesce SUMMARY It is widely appreciated that the selection and modulation of locomotor circuits are dependent on the actions of higher-order projection neurons. In the leech, Hirudo medicinalis, locomotion is modulated by a number of cephalic projection neurons that descend...
Journal Articles
Effects of extracellular purines on ion transport across the integument of Hirudo medicinalis
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Journal:
Journal of Experimental Biology
J Exp Biol (2002) 205 (17): 2705–2713.
Published: 1 September 2002
... the dorsal integument of the leech Hirudo medicinalis , and we have established a model of Na + uptake. In the present study, we investigated the effect of long-term acclimation on transintegumental ion transport by adapting leeches to high-salinity conditions. We dissected segments of dorsal integument...
Journal Articles
Regulation of Na + transport across leech skin by peptide hormones and neurotransmitters
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Journal:
Journal of Experimental Biology
J Exp Biol (2001) 204 (8): 1509–1517.
Published: 15 April 2001
...Helga Milde; Wolf-Michael Weber; Michel Salzet; Wolfgang Clauss ABSTRACT An increase in intracellular cyclic AMP concentration stimulates transepithelial Na + transport across the skin of the leech Hirudo medicinalis , but it is unclear how cytosolic cyclic AMP levels are elevated in vivo...
Journal Articles
Transformation of leech microglial cell morphology and properties following co-culture with injured central nervous system tissue
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Journal:
Journal of Experimental Biology
J Exp Biol (1999) 202 (6): 723–728.
Published: 15 March 1999
... glia trophic factor leech Hirudo medicinalis In the leech, regeneration after injury depends on extrinsic factors (see von Bernhardi and Muller, 1995) that can enhance or inhibit axon growth. Such factors include extracellular matrix (ECM) molecules, cell adhesion molecules and growth...
Journal Articles
Basal Acetylcholine Release In Leech Ganglia Depolarizes Neurons Through Receptors With A Nicotinic Binding Site
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Journal:
Journal of Experimental Biology
J Exp Biol (1998) 201 (12): 1907–1915.
Published: 15 June 1998
..., the results presented in this report suggest that the basal ACh tonus regulates the output of these neuromodulatory serotonergic neurons. * e-mail: [email protected] 06 04 1998 21 05 1998 © The Company of Biologists Limited 1998 leech Hirudo medicinalis...
Journal Articles
Long-Lasting Depolarization Of Leech Neurons Mediated By Receptors With A Nicotinic Binding Site
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Journal:
Journal of Experimental Biology
J Exp Biol (1998) 201 (12): 1895–1906.
Published: 15 June 1998
... processes of the Retzius cell, enabling a persistent excitatory signal. * e-mail: [email protected] 06 04 1998 21 05 1998 © The Company of Biologists Limited 1998 serotonergic neurone cholinergic response delayed depolarization leech Hirudo medicinalis...
Journal Articles
Intracellular Ca 2+ Release Mediated by Metabotropic Glutamate Receptor Activation In The Leech Giant Glial Cell
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Journal:
Journal of Experimental Biology
J Exp Biol (1997) 200 (19): 2565–2573.
Published: 1 October 1997
... Hirudo medicinalis . Exposed glial cells of isolated ganglia were filled iontophoretically with the Ca 2+ indicator dye Fura-2. Application of glutamate (200–500 μmol l −1) caused biphasic membrane potential shifts and increases in [Ca 2+ ] i , which were only partly reduced by either removing...
Journal Articles
Chloride Secretion Drives Urine Formation in Leech Nephridia
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Journal:
Journal of Experimental Biology
J Exp Biol (1997) 200 (16): 2217–2227.
Published: 15 August 1997
...The Company of Biologists Limited 1997 Hirudo medicinalis leech nephridia ion transport urine formation natriuresis Cl - secretion Blood feeders, such as leeches, mosquitos, bugs and ticks, increase their salt and water output following a meal. Although these species occupy different...
Journal Articles
Interneuronal and Motor Patterns During Crawling Behavior of Semi-Intact Leeches
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Journal:
Journal of Experimental Biology
J Exp Biol (1997) 200 (9): 1369–1381.
Published: 1 May 1997
... of behavior with a limited number of neurons is discussed. * Present address: Zoological Institute, University of Zürich, Winterthurer Strasse 190, CH-8057 Zürich, Switzerland (e-mail: [email protected]). 20 02 1997 ©The Company of Biologists Limited 1997 Hirudo medicinalis...
Journal Articles
An Increase in Activity of Serotonergic Retzius Neurones May not be Necessary for the Consummatory Phase of Feeding in the Leech Hirudo Medicinalis
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Journal:
Journal of Experimental Biology
J Exp Biol (1996) 199 (6): 1405–1414.
Published: 1 June 1996
... 1996 ©The Company of Biologists Limited 1996 serotonin feeding Retzius cell Leydig cell ingestion neuromodulation appetitive consummatory behaviour leech Hirudo medicinalis In many animals, feeding is a complex activity that includes an appetitive phase (involving...
Journal Articles
Mapping Motor Neurone Activity to Overt Behaviour in the Leech: Internal Pressures Produced During Locomotion
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Journal:
Journal of Experimental Biology
J Exp Biol (1996) 199 (6): 1415–1428.
Published: 1 June 1996
... internal pressure biomechanics muscular hydrostat locomotion circular muscles posture leech Hirudo medicinalis Rigidity is required to provide the best posture for the efficient transfer of force from muscle to motion. In organs that contain skeletal tissue, the degree of freedom to move...
Journal Articles
Remodelling of an Intact Neurone in the Central Nervous System of the Leech
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Journal:
Journal of Experimental Biology
J Exp Biol (1995) 198 (9): 1989–1994.
Published: 1 September 1995
...B. Calabrese; M. Pellegrino ABSTRACT The regeneration pattern of two identified central neurones was studied in the leech Hirudo medicinalis . Anterior pagoda (AP) and mechanosensory touch-sensitive (T) neurones were stained in adult segmental ganglia, maintained in culture for 6–10 days. AP...
Journal Articles
An Endogenous Peptide Modulates The Activity Of A Sensory Neurone In The Leech Hirudo Medicinalis
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Journal:
Journal of Experimental Biology
J Exp Biol (1995) 198 (6): 1405–1415.
Published: 1 June 1995
... immunoreactivity and its colocalization with FMRFamide-like immunoreactivity in the central nervous system of the leech Hirudo medicinalis . Cell Tissue Res. 257 , 187 – 199 . Evans , B. D. , Pohl , J. , Kartsonis , N. A. and Calabrese , R. L. (1991). Identification of RFamide...
Journal Articles
Ingestive Sensory Inputs Excite Serotonin Effector Neurones and Promote Serotonin Depletion From the Leech Central Nervous System and Periphery
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Journal:
Journal of Experimental Biology
J Exp Biol (1995) 198 (6): 1233–1242.
Published: 1 June 1995
...James R. Groome; Dana K. Vaughan; Charles M. Lent ABSTRACT Thermal and chemical stimuli known to promote ingestive behaviours in the medicinal leech Hirudo medicinalis were tested for their physiological effects on Retzius neurones and for their biochemical effects on serotonin levels...
Journal Articles
Molecules that become redistributed during regeneration of the leech central nervous system
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Journal:
Journal of Experimental Biology
J Exp Biol (1994) 186 (1): 43–54.
Published: 1 January 1994
... 1993 © 1994 by Company of Biologists 1994 regeneration invertebrate connectives leech Hirudo medicinalis A key question in regeneration of the nervous system concerns the identity of factors required for growth and synapse formation to occur. To what extent does the target...
Journal Articles
Switching in the activity state of an interneuron that controls coordination of the hearts in the medicinal leech (Hirudo medicinalis)
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Journal:
Journal of Experimental Biology
J Exp Biol (1994) 186 (1): 157–171.
Published: 1 January 1994
... 02543, USA. 13 09 1993 © 1994 by Company of Biologists 1994 leech Hirudo medicinalis heart interneuron spontaneous activity switch voltage-clamp conductance The circulatory system of the leech Hirudo medicinalis consists of two contractile lateral blood vessels...
Journal Articles
The Behavioural State of Satiation in the Leech is Regulated by Body Distension and Mimicked by Serotonin Depletion
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Journal:
Journal of Experimental Biology
J Exp Biol (1993) 182 (1): 265–270.
Published: 1 September 1993
... localized in or near surface folds. 5 5 1993 © 1993 by Company of Biologists 1993 behavioural state distension feeding Hirudo medicinalis neurotoxin serotonin During the ensuing consummatory phase of hunger, leeches ingest blood meals which increase their volume...
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