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Topic: Dorsal

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In the News (Wed 21 Aug 19)

  Definition of dorsal - Merriam-Webster Online Dictionary
Learn more about "dorsal" and related topics at Britannica.com
Find more about "dorsal" instantly with Live Search
See a map of "dorsal" in the Visual Thesaurus
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=dorsal   (26 words)

  Dorsal - Wikipedia, the free encyclopedia
In anatomy, the dorsal is the side in which the backbone is located.
Examples of this include the dorsal fin, dorsal root ganglion, dorsal root, dorsal nerve, dorsum sellae, dorsal arch, dorsalis pedis arteries, dorsal ramus, dorsal respiratory group, dorsal venous arch, and dorsiflexion among others.
In neurology, dorsal is an outdated term for the medial longitudinal fasciculus in the neural arch.
en.wikipedia.org /wiki/Dorsal   (426 words)

 Dorsal Ventral Polarity
Dorsal protein plays a central role and it acts on cell nuclei to specify different regions of the embryo, and their respective cell fates which are all regulated by concentration gradients.
For example, the dorsal gene is needed for the differentiation of the ventral cells.
The activation of the Toll protein is critical to the establishment of the gradient of the Dorsal protein in the ventral nuclei.
www.trinity.edu /rblyston/CraftyMol/dvp.htm   (1196 words)

 The Dorsal Wall Lifting Theory of Laminitis   (Site not responding. Last check: 2007-10-09)
The grooves were positioned medial and lateral to the dorsal hoof surface, approximately midway between the toe and heel regions of the hoof, staring 1cm distal to the coronary band and extending to the ground surface (Fig.
Dorsal wall resections will remove a section of hoof wall that is exerting a lifting force onto the underlying dorsal laminae.
The proposal of the dorsal wall lifting theory is not a rejection of scientific research or literature previously published on laminitis, which in general has struggled to confirm the vascular crisis theory.
members.aol.com /tompryan/part2/DWL2.htm   (3410 words)

 Circumcision: Local Anesthesia Better Than Dorsal Penile Nerve Block
To perform dorsal penile nerve block, the penile root is identified and a 26-gauge needle is inserted 0.5 cm distal to the root at the 10- and 2-o'clock positions (Figure 2).
This study was undertaken to compare the efficacy of dorsal penile nerve block and local anesthesia by objective parameters: heart rate, transcutaneous oxygen saturation, the presence or absence of crying, and postoperative plasma cortisol levels.
Dorsal penile nerve block was administered as described by Kirya and Werthmann [5].
www.cirp.org /library/pain/masciello   (2670 words)

 Five Sources of a Dorsal Root Potential: Their Interactions and Origins in the Superficial Dorsal Horn -- Wall and ...
of superficial dorsal horn neurons and the spontaneous DRP.
Dorsal roots were dissected free and cut at their exit from the dura.
One electrode was placed on the dorsal midline of the cord in the same segment from which the dorsal root potential was recorded.
jn.physiology.org /cgi/content/full/78/2/860   (6873 words)

 Courey Summary
In contrast, Dorsal is a repressor of the decapentaplegic (dpp) gene, which is therefore only transcribed in the dorsally-situated presumptive ectoderm where Dorsal activity is low.
When Dorsal binds to the DNA in the context of E boxes, which interact with bHLH factors such as Twi), the resulting protein platform creates a surface for the efficient recruitment of coactivators such as CBP or Dip3.
Dorsal may alleviate the inhibition brought about by the Twi N-terminus, perhaps by induc-ing a conformational change in Twi.
www.chem.ucla.edu /dept/Faculty/courey/research1.html   (1179 words)

 A multimeric complex and the nuclear targeting of the Drosophila Rel protein┬áDorsal -- Yang and Steward 94 (26): 14524 ...
Dorsal is regulated at the level of nuclear translocation (12-15).
The phosphorylation of Dorsal correlates with its dissociation
Dorsal or function in concert with Dorsal remain to be identified.
www.pnas.org /cgi/content/full/94/26/14524   (3996 words)

 die-1 and dorsal intercalation
We have investigated epithelial cell rearrangement (intercalation) in the dorsal hypodermis, or embryonic epidermis, of the C.
Note that many of the anterior dorsal hypodermal cells intercalate, but most of the posterior dorsal cells are wedged and do not intercalate completely before they fuse into the dorsal hypodermal syncytium.
The bright ovals are the nuclei of dorsal hypodermal cells, which undergo a contralateral migration as intercalation proceeds.
worms.zoology.wisc.edu /die/die-1.htm   (1335 words)

 The bHLH factor Olig3 coordinates the specification of dorsal neurons in the spinal cord -- Müller et al. 19 (6): ...
in progenitors of the dorsal or in neuronal cells of the ventral
Gene expression in progenitors of the dorsal spinal cord of Olig3 mutant embryos.
Brown, A.G. The dorsal horn of the spinal cord.
www.genesdev.org /cgi/content/full/19/6/733   (5854 words)

 Cephalopod Dorsal Head-Mantle Fusion   (Site not responding. Last check: 2007-10-09)
In decapodiforms the dorsal margin of the mantle may be free (i.e., no head fusion) or it may join with the head by the narrow fusion of the nuchal locking-apparatus, or it may fuse broadly (Fig.
A); the dorsal mantle fused at the nuchal locking-apparatus (Fig.
B at arrow) and the dorsal mantle margin broadly fused to the head (Fig.
tolweb.org /accessory/Cephalopod_Dorsal_Head-Mantle_Fusion?acc_id=2020   (236 words)

 Homeostatic balance between dorsal and cactus proteins in the Drosophila embryo -- Govind et al. 117 (1): 135 -- ...
The maternal-effect gene dorsal encodes the ventral morphogen that is
The dorsal protein is cytoplasmic in early embryos,
propose that in a wild-type embryo, the activities of dorsal and cactus are
dev.biologists.org /cgi/content/abstract/117/1/135   (433 words)

 Activation of amphibian dorsal determinants
One hypothesis (mentioned in Gilbert, 1997) is that the beta-catenin of the inner cytoplasm is activated to enter the nuclei of those cells on the dorsal side of the embryo.
Kageura (1997) studies indicate that a dorsal determinant resides within the egg vegetal cortex and that this region is rotated to the dorsal side during fertilization.
In Kageura's model, the activation of the dorsal axis would occur when the competent equatorial inner cytoplasm contacts the cortical determinant that had rotated to the future dorsal side of the embryo.
zygote.swarthmore.edu /regul9.html   (1226 words)

 The Dorsal Rel Homology Domain Plays an Active Role in Transcriptional Regulation -- Jia et al. 22 (14): 5089 -- ...
Dorsal is a maternal morphogen that is crucial for the establishment
S2 cells was cotransfected with 60 ng of a plasmid encoding full-length Dorsal or the indicated Dorsal mutants together with 20 ng of a plasmid encoding Twist, 5 µg of the DE5 reporter, and 0 ng (white bars), 100 ng (gray bars), or 500 ng (fl bars) of a plasmid encoding Cactus.
The dorsal gradient morphogen regulates stripes of rhomboid expression in the presumptive neuroectoderm of the Drosophila embryo.
mcb.asm.org /cgi/content/full/22/14/5089   (6284 words)

 Nuclear import of the Drosophila Rel protein Dorsal is regulated by phosphorylation -- Drier et al. 13 (5): 556 -- ...
6, WT, for the wild-type Dorsal gradient), as
A wild-type dorsal minigene was assembled with the dorsal cDNA fused to ~4.5 kb of 5'-genomic DNA from the dorsal locus in
Steward, R. Relocalization of the dorsal protein from the cytoplasm to the nucleus correlates with its function.
www.genesdev.org /cgi/content/full/13/5/556   (6991 words)

 dorsal incision
A dorsal cut is a good way to go on many fish because you can get by with less seam area that has to be textured than a belly or side cut.Go ahead and cut off the spiny dorsal and soft dorsal before you start.
From the front edge of the spiny dorsal to the head and from the rear of the soft dorsal to the tail is the only area that has to be re-scaled with epoxy.
The fin butt areas of the spiny and dorsal that were cut off are very easy to hide.
www.taxidermy.net /forums/FishTaxiArticles/99282F627F.html   (492 words)

 Slow Dorsal-Ventral Rhythm Generator in the Lamprey Spinal Cord
Ventral root branches supplying dorsal and ventral myotomes were exposed bilaterally to study the motor pattern in detail.
These results suggest that in addition to the network generating the swimming rhythm in the lamprey spinal cord, there is also a network providing slow reciprocal alternation between dorsal and ventral parts of the myotome.
During steering, a selective activation of dorsal and ventral myotomes is required and the neural network generating the slow rhythm may represent activity in the spinal machinery used for steering.
www.sgnis.org /publicat/aokif.htm   (264 words)

 Pressor reflex evoked by static muscle contraction: role of nitric oxide in the dorsal horn -- Wilson et al. 276 (6): ...
in the dorsal horn of the spinal cord.
Evidence for involvement of N-methylaspartate receptors in "wind-up" of class 2 neurones in the dorsal horn of the rat.
Attenuation of the exercise pressor reflex: effect of an opioid agonist on substance P release in the L7 dorsal horn of cats.
ajpregu.physiology.org /cgi/content/full/276/6/R1639   (4598 words)

 A Functional Interaction between Dorsal and Components of the Smt3 Conjugation Machinery -- Bhaskar et al. 275 (6): ...
Cactus and Dorsal serves to retain Dorsal in the cytoplasm.
S-labeled Dorsal (lanes 4, 7, and 10), Cactus (lanes 5, 8, and 11), or luciferase (lanes 6, 9, and 12) were incubated with equal amounts of the GST (lanes 4-6), GST-DmUbc9 (lanes 7-9), or GST-Su(H) (lanes 10-12).
Lanes 1-3 show an amount of Dorsal (lane 1), Cactus (lane 2), or luciferase (lane 3) input protein equal to 20% of that used in the assays shown in lanes 4-12.
www.jbc.org /cgi/content/full/275/6/4033   (5762 words)

 Interactions between dorsal-ventral patterning genes lmx1b, engrailed-1, and wnt-7a in the vertebrate limb   (Site not responding. Last check: 2007-10-09)
For example, humans and most other mammals have nails on the dorsal surface of their digits, while the ventral surface is covered by skin or footpads.
The function of engrailed-1 is to repress the expression of wnt-7a in the ventral limb bud ectoderm.
The third factor, a LIM-homeodomain transcription factor, lmx1b is induced in dorsal mesenchyme by wnt-7a and it is both necessary and sufficient to specify dorsal limb pattern.
www.ijdb.ehu.es /0207/a937.htm   (290 words)

 To save dolphin's dorsal fin experts combine medical technology and teamwork   (Site not responding. Last check: 2007-10-09)
Liko sustained a tear at the base of his dorsal (top) fin, likely in a game of "chase" with his dolphin cohorts.
Though LED light is three times brighter than the sun, the medical treatment wands are cool to the touch, highly portable and do not damage the skin of dolphins or humans.
Liko's dorsal fin continues its remarkable healing as the young dolphin continues to participate in his pioneering regenerative therapies in a quiet lagoon alongside the Hilton Waikoloa Village Resort.
www.eurekalert.org /pub_releases/2004-10/uopm-tsd101904.php   (877 words)

 Establishment of the Dorsal—Ventral Axis in Xenopus Embryos Coincides with the Dorsal Enrichment of Dishevelled That ...
Establishment of the Dorsal—Ventral Axis in Xenopus Embryos Coincides with the Dorsal Enrichment of Dishevelled That Is Dependent on Cortical Rotation -- Miller et al.
Establishment of the Dorsal–Ventral Axis in Xenopus Embryos Coincides with the Dorsal Enrichment of Dishevelled That Is Dependent on Cortical Rotation
Dorsal downregulation of GSK3beta by a non-Wnt-like mechanism is an early molecular consequence of cortical rotation in early Xenopus embryos
www.jcb.org /cgi/content/abstract/146/2/427   (1150 words)

 Lutjanus peru dorsal fin references   (Site not responding. Last check: 2007-10-09)
The dorsal fin is single and continuous, and the first half is spinous.
The base of dorsal fin, especially the soft portion, bears a moderately wide covering of scales.
The anterior portion of the soft dorsal fin is not significantly taller than posterior part, and neither the anterior nor posterior fin rays are elongated.
vm.cfsan.fda.gov /~frf/cfsan.fda.gov/~frf/rfe3ps12.html   (257 words)

 New Intrathalamic Pathways Allowing Modality-Related and Cross-Modality Switching in the Dorsal Thalamus -- Crabtree ...
The corresponding directions of the arrows indicate the locations of the stimulating electrode in one dorsal thalamic nucleus and of cells in another dorsal thalamic nucleus in which a response was evoked.
Barbaresi P, Spreafico R, Frassoni C, Rustioni A (1986) GABAergic neurons are present in the dorsal column nuclei but not in the ventroposterior complex of rats.
Bentivoglio M, Spreafico R, Minciacchi D, Macchi G (1991) GABAergic interneurons and neuropil of the intralaminar thalamus: an immunohistochemical study in the rat and the cat, with notes in the monkey.
www.jneurosci.org /cgi/content/full/22/19/8754   (5509 words)

 Conjugation of Smt3 to Dorsal May Potentiate the Drosophila Immune Response -- Bhaskar et al. 22 (2): 492 -- Molecular ...
The DE5 reporter was cotransfected without Dorsal and Twist expression vectors or with Dorsal and Twist expression vectors plus 0, 1, 2, 5, or 10 µg of a Ulp1 expression vector.
Conjugation of Smt3 to Dorsal occurs at lysine 382.
(A) Conjugation of Smt3 to Dorsal correlates with increased LPS induction of CecA1.
mcb.asm.org /cgi/content/full/22/2/492   (7535 words)

 Arch Neurol -- Abstract: Dorsal Forebrain Anomaly in Williams Syndrome, November 2001, Galaburda et al. 58 (11): 1865   (Site not responding. Last check: 2007-10-09)
Arch Neurol -- Abstract: Dorsal Forebrain Anomaly in Williams Syndrome, November 2001, Galaburda et al.
the dorsal and ventral portions of the cerebral hemispheres
by examining the dorsal extent of the central sulcus in brain
archneur.ama-assn.org /cgi/content/abstract/58/11/1865   (256 words)

 Endothelial cell interactions initiate dorsal pancreas development by selectively inducing the transcription factor ...
Articles by Yoshitomi, H. Articles by Zaret, K. Endothelial cell interactions initiate dorsal pancreas development by selectively inducing the transcription factor Ptf1a
Dorsal and ventral pancreatic bud development from the endoderm
cause the induction of Ptf1a in dorsal endoderm explants.
dev.biologists.org /cgi/content/abstract/131/4/807   (306 words)

 Gadus morhua dorsal fin references   (Site not responding. Last check: 2007-10-09)
Summary: Dorsal fin base long, extending almost the length of the back.
Dorsal fin divided into 3 well-separated parts (forming separte fins), bearing about 14, 21 and 19 rays respectively.
First dorsal fin originating posterior to head (predorsal distance less than about one-third of total length), its height about one-half of head length; third dorsal originating far posterior to the level of the vent.
vm.cfsan.fda.gov /~frf/rfe3ac12.html   (157 words)

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