Original research described above was supported by NSF grant 0344630.

Anatomical features of the horseshoe crab relevant to bleeding (Fig. 1) <img src="/files/ftp_upload/old/958_2008_10_3_0/958_Figure-01.png" alt="Figure 1" width="389" height="259" /> Figure 1 <ol> <li>The three major divisions of the body, from anterior to posterior, are the prosoma (P), the opisthosoma (O) , and the telson (T) 1.</li> <li>The anterior and lateral free margins of the prosoma is the flange.</li> <li>The posterior-most ind...

<ol>
	<li>Lochhead, J. H., Brown, F. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Selected+Invertebrate+Types.">Selected Invertebrate Types.</a> , 360-381 (1950).</li><li>Shuster, C. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+circulatory+system+and+blood+of+the+horseshoe+crab+Limulus+polyphemus+L.:+a+review.">The circulatory system and blood of the horseshoe crab Limulus polyphemus L.: a review.</a> US Dept Energy, Fed Regul. Comm. , (1978).</li><li>Conrad, M. L., Pardy, R. L., Wainwright, N., Child, A., Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Response+of+the+blood+clotting+system+of+the+American+horseshoe+crab,+Limulus+polyphemus,+to+a+novel+form+of+lipopolysaccharide+from+a+green+alga.">Response of the blood clotting system of the American horseshoe crab, Limulus polyphemus, to a novel form of lipopolysaccharide from a green alga.</a> Comp Biochem. Physiol A Mol. Integr. Physiol. , 144-423 (2006).</li><li>Nakamura, T., Morita, T., Iwanaga, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intracellular+proclotting+enzyme+in+limulus+(Tachypleus+tridentatus)+hemocytes:+its+purification+and+properties.">Intracellular proclotting enzyme in limulus (Tachypleus tridentatus) hemocytes: its purification and properties.</a> J. Biochem. (Tokyo. 97, 1561-1574 (1985).</li><li>Levin, J., Ornberg, R. L., Cohen, W. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Blood+Cells+of+Marine+Invertebrates:+Experimental+Systems+in+Cell+Biology+and+Comparative+Physiology.">Blood Cells of Marine Invertebrates: Experimental Systems in Cell Biology and Comparative Physiology.</a> , 259-260 (1985).</li><li>Liang, S. M., Liu, T. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Studies+on+the+Limulus+coagulation+system:+inhibition+of+activation+of+the+proclotting+enzyme,+by+dimethyl+sulfoxide.">Studies on the Limulus coagulation system: inhibition of activation of the proclotting enzyme, by dimethyl sulfoxide.</a> Biochem. Biophys. Res. Commun. 105, 553-559 (1982).</li><li>Soderhall, K., Smith, V. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Separation+of+the+haemocyte+populations+of+Carcinus+maenas+and+other+marine+decapods,+and+prophenoloxidase+distribution.">Separation of the haemocyte populations of Carcinus maenas and other marine decapods, and prophenoloxidase distribution.</a> Dev. Comp Immunol. 7, 229-239 (1983).</li><li>Solon, E., Gupta, A. P., Gaugler, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Signal+transduction+during+exocytosis+in+Limulus+polyphemus+granulocytes.">Signal transduction during exocytosis in Limulus polyphemus granulocytes.</a> Dev. Comp. Immunol. 20, 307-321 (1996).</li><li>Armstrong, P. B., Rickles, F. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endotoxin-induced+degranulation+of+the+Limulus+amebocyte.">Endotoxin-induced degranulation of the Limulus amebocyte.</a> Exp. Cell Res. 140, 15-24 (1982).</li><li>Iwanaga, S., Kawabata, S., Shuster, C. N., Barlow, R. B., Berkman, L., Brockmann, H. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evolution+and+phylogeny+of+defense+molecules+associated+with+innate+immunity+in+horseshoe+crab.">Evolution and phylogeny of defense molecules associated with innate immunity in horseshoe crab.</a> Front Biosci. 3, (1998).</li><li>Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+American+Horseshoe+Crab.">The American Horseshoe Crab.</a> , 288-309 (2003).</li><li>Iwanaga, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+limulus+clotting+reaction.">The limulus clotting reaction.</a> Curr. Opin. Immunol. 5, 74-82 (1993).</li><li>Levin, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Limulus+amebocyte+lysate+test:+perspectives+and+problems.">The Limulus amebocyte lysate test: perspectives and problems.</a> Prog. Clin. Biol. Res. 231, 1-23 (1987).</li><li>Koshiba, T., Hashii, T., Kawabata, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+structural+perspective+on+the+interaction+between+lipopolysaccharide+and+factor+C,+a+receptor+involved+in+recognition+of+Gram-negative+bacteria.">A structural perspective on the interaction between lipopolysaccharide and factor C, a receptor involved in recognition of Gram-negative bacteria.</a> J. Biol. Chem. 282, 3962-3967 (2007).</li><li>James, G. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inactivation+of+the+protease+inhibitor+phenylmethylsulfonyl+fluoride+in+buffers.">Inactivation of the protease inhibitor phenylmethylsulfonyl fluoride in buffers.</a> Anal. Biochem. 86, 574-579 (1978).</li><li>Murer, E. H., Levin, J., Holme, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+and+studies+of+the+granules+of+the+amebocytes+of+Limulus+polyphemus,+the+horseshoe+crab.">Isolation and studies of the granules of the amebocytes of Limulus polyphemus, the horseshoe crab.</a> J. Cell Physiol. 86, 533-542 (1975).</li><li>Decker, H., Ryan, M., Jaenicke, E., Terwilliger, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SDS+induced+phenoloxidase+activity+of+hemocyanins+from+Limulus+polyphemus,+Eurypelma+californicum+and+cancer.">SDS induced phenoloxidase activity of hemocyanins from Limulus polyphemus, Eurypelma californicum and cancer.</a> , 276-17796 (2001).</li><li>Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+cytolytic+function+for+a+sialic+acid-binding+lectin+that+is+a+member+of+the+pentraxin+family+of+proteins.">A cytolytic function for a sialic acid-binding lectin that is a member of the pentraxin family of proteins.</a> J. Biol. Chem. 271, 14717-14721 (1996).</li><li>Armstrong, P. B., Melchior, R., Quigley, J. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Humoral+immunity+in+long-lived+arthropods.">Humoral immunity in long-lived arthropods.</a> J. Insect Physiol. 42, 53-64 (1996).</li><li>Armstrong, P. B., Armstrong, M. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+decorated+clot:+Binding+of+agents+of+the+innate+immune+system+to+the+fibrils+of+the+limulus+blood+clot.">The decorated clot: Binding of agents of the innate immune system to the fibrils of the limulus blood clot.</a> Biol. Bull. 205, 201-203 (2003).</li><li>Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interaction+of+the+motile+blood+cells+of+the+horseshoe+crab,+Limulus.+Studies+on+contact+paralysis+of+pseudopodial+activity+and+cellular+overlapping+in+vitro.">Interaction of the motile blood cells of the horseshoe crab, Limulus. Studies on contact paralysis of pseudopodial activity and cellular overlapping in vitro.</a> Exp. Cell Res. 107, 127-138 (1977).</li><li>Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Motility+of+the+Limulus+blood+cell.">Motility of the Limulus blood cell.</a> J. Cell Sci. 37, 169-180 (1979).</li><li>Armstrong, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adhesion+and+spreading+of+Limulus+blood+cells+on+artificial+surfaces.">Adhesion and spreading of Limulus blood cells on artificial surfaces.</a> J. Cell Sci. 44, 243-262 (1980).</li><li>Armstrong, P. B., Cohen, W. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Blood+Cells+of+Marine+Invertebrates.">Blood Cells of Marine Invertebrates.</a> Lab. Animal. , 253-258 (1985).</li><li>Smith, S. A., Berkson, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laboratory+culture+and+maintenance+of+the+horseshoe+crab+(Limulus+polyphemus).">Laboratory culture and maintenance of the horseshoe crab (Limulus polyphemus).</a> Lab. Animal. 34, 27-34 (1980).</li><li>Leibovitz, L., Lewbart, G. A., Shuster, C. N., Barlow, R. B., Brockmann, H. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+American+Horseshoe+Crab.">The American Horseshoe Crab.</a> , 245-275 (2003).</li><li>Rudkin, D. M., Young, G. A., Nowlan, G. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+oldest+horseshoe+crab:+a+new+xiphosurid+from+Late+Ordovician+Konservat-Lagerstatten+deposits.">The oldest horseshoe crab: a new xiphosurid from Late Ordovician Konservat-Lagerstatten deposits.</a> Palaeontology. 51, 1-9 (2008).</li><li>Shuster, C. N., Sekiguchi, K., Shuster, C. N., Barlow, R. B., Brockmann, J. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> The American Horseshoe Crab. , 103-132 (2003).</li><li>Walls, E. A., Berkam, J., Smith, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+horseshoe+crab,+Limulus+polyphemus,+200+million+years+of+existence,+100+years+of+study.">The horseshoe crab, Limulus polyphemus, 200 million years of existence, 100 years of study.</a> Rev. Fisheries Sci. 10, 39-73 .</li><li>Patten, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Evolution+of+the+Vertebrates+and+Their+Kin.">The Evolution of the Vertebrates and Their Kin.</a> P. Blakiston's Son and Co. , 195-209 (1912).</li></ol>

There are four species of horseshoe crab, Limulus polyphemus from the east coast of North America and three species that range from Japan to the Bay of Bengal. The animal is identified as a "living fossil" because anatomically similar forms have been found as fossils from 445 million years ago 27. The horseshoe crab represents a long-lived animal, requiring 10 - 13 years to reach maturity and living at least 20 years 28. Although it has been subjected to extensive harvesting as bait for the...

blood collection from the american horseshoe crab, limulus polyphemus

The horseshoe crab has the best-characterized immune system of any long-lived invertebrate. The study of immunity in horseshoe crabs has been facilitated by the ease in collecting large volumes of blood and from the simplicity of the blood. Horseshoe crabs show only a single cell type in the general circulation, the granular amebocyte. The plasma has the salt content of sea water and only three abundant proteins, hemocyanin, the respiratory protein, the C-reactive proteins, which function in the cytolytic destruction of foreign cells, including bacterial cells, and &alpha;2-macroglobulin, which inhibits the proteases of invading pathogens. Blood is collected by direct cardiac puncture under conditions that minimize contamination by lipopolysaccharide (a.k.a., endotoxin, LPS), a product of the Gram-negative bacteria. A large animal can yield 200 - 400 mL of blood. For the study of the plasma, blood cells are immediately removed from the plasma by centrifugation and the plasma can then be fractionated into its constituent proteins. The blood cells are conveniently studied microscopically by collecting small volumes of blood into LPS-free isotonic saline (0.5 M NaCl) under conditions that permit direct microscopic examination by placing one of more LPS-free coverglasses on the culture dish surface, then mounting those coverglasses in simple observation chambers following cell attachment. A second preparation for direct observation is to collect 3 - 5 mL of blood in a LPS-free embryo dish and then explanting fragments of aggregated amebocytes to a chamber that sandwiches the tissue between a slide and a coverglass. In this preparation, the motile amebocytes migrate onto the coverglass surface, where they can readily be observed. The blood clotting system involves aggregation of amebocytes and the formation of an extracellular clot of a protein, coagulin, which is released from the secretory granules of the blood cells. Biochemical analysis of washed blood cells requires that aggregation and degranulation does not occur, which can be accomplished by collecting blood into 0.1 volumes of 2% Tween-20, 0.5 M LPS-free NaCl, followed by centrifugation of the cells and washing with 0.5 M NaCl.

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Blood Collection from the American Horseshoe Crab, Limulus Polyphemus

The American horseshoe crab, Limulus polyphemus, is arguably the most convenient source for large quantities of blood of any invertebrate. The blood is simple in composition, with only one cell-type in the general circulation, the granular amebocyte, and only three abundant proteins in the plasma, hemocyanin, the C-reactive proteins, and &alpha;2-macroglobulin. Blood is collected from the heart and the blood cells and plasma are separated by centrifugation.

The horseshoe crab has the best-characterized immune system of any long-lived invertebrate.  The study of immunity in horseshoe crabs has been facilitated ...

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29.8K visualizações.  University of California, Davis.  O caranguejo-ferradura americano, Limulus polyphemus, é sem dúvida a fonte mais conveniente para grandes quantidades de sangue de invertebrados. O sangue é simples na composição, com apenas um tipo celular na circulação geral, o Amebocyte granular, e apenas três proteínas abundante no plasma, hemocianina, as proteínas C-reativa e α2-macroglobulina. O sangue é coletado a partir do coração e as células de sangue e plasma são separados por centrifugação. 