Abstract
1. The distribution of the heparin-neutralizing factor (platelet factor 4, PF4) in subcellular organelles of blood platelets of rabbits and man was investigated. 2. In both species the organelles storing 5-hydroxytryptamine (5-HT storage organelles) contained only trivial amounts of PF4. 3. In contrast, the content of PF4 was highest in the subcellular fractions rich in alpha-granules. 4. In conclusion, PF4 is probably localized in the alpha-granules and therefore the platelets contain at least two types of organelles (5-HT organelles and alpha-granules) capable of releasing their contents in response to the same stimuli, such as exposure to collagen, thrombin, etc.
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Selected References
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- Aborg C. H., Uvnäs B. A mucopolysaccharide-protein complex with amine binding properties in rat thrombocytes. Acta Physiol Scand. 1971 Apr;81(4):568–570. doi: 10.1111/j.1748-1716.1971.tb04934.x. [DOI] [PubMed] [Google Scholar]
- BOGDANSKI D. F., PLETSCHER A., BRODIE B. B., UNDENFRIEND S. Identification and assay of serotonin in brain. J Pharmacol Exp Ther. 1956 May;117(1):82–88. [PubMed] [Google Scholar]
- Barber A. J., Käser-Glanzmann R., Jakábová M., Lüscher E. F. Characterization of a chondroitin 4 -sulfate proteoglycan carrier for heparin neutralizing activity (platelet factor 4 ) released from human blood platelets. Biochim Biophys Acta. 1972 Dec 29;286(2):312–329. [PubMed] [Google Scholar]
- Broekman M. J., Handin R. I., Cohen P. Distribution of fibrinogen, and platelet factors 4 and XIII in subcellular fractions of human platelets. Br J Haematol. 1975 Sep;31(1):51–55. doi: 10.1111/j.1365-2141.1975.tb00831.x. [DOI] [PubMed] [Google Scholar]
- Da Prada M., Pletscher A. Isolated 5-hydroxytryptamine organelles of rabbit blood platelets: physiological properties and drug-induced changes. Br J Pharmacol. 1968 Nov;34(3):591–597. doi: 10.1111/j.1476-5381.1968.tb08487.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Da Prada M., Pletscher A. Mechanisms of 5-hydroxytryptamine storage in subcellular organelles of blood platelets. Adv Biochem Psychopharmacol. 1974;10:311–320. [PubMed] [Google Scholar]
- Da Prada M., Pletscher A., Tranzer J. P., Knuchel H. Subcellular localization of 5-hydroxytryptamine and histamine in blood platelets. Nature. 1967 Dec 30;216(5122):1315–1317. doi: 10.1038/2161315a0. [DOI] [PubMed] [Google Scholar]
- Da Prada M., Tranzer J. P., Pletscher A. Storage of 5-hydroxytryptamine in human blood platelets. Experientia. 1972 Nov 15;28(11):1328–1329. doi: 10.1007/BF01965326. [DOI] [PubMed] [Google Scholar]
- Da Prada M., Von Berlepsch K., Pletscher A. Storage of biogenic amines in blood platelets and adrenal medulla. Lack of evidence for direct involvement of glycosaminoglycans. Naunyn Schmiedebergs Arch Pharmacol. 1972;275(3):315–322. doi: 10.1007/BF00500059. [DOI] [PubMed] [Google Scholar]
- Day H. J., Stormorken H., Holmsen H. Subcellular localization of platelet factor 3 and platelet factor 4. Scand J Haematol. 1973;10(4):254–260. doi: 10.1111/j.1600-0609.1973.tb00069.x. [DOI] [PubMed] [Google Scholar]
- Hagen I. Effects of thrombin on washed, human platelets: changes in the subcellular fractions. Biochim Biophys Acta. 1975 Jun 12;392(2):242–254. doi: 10.1016/0304-4165(75)90006-9. [DOI] [PubMed] [Google Scholar]
- Käser-Glanzmann R., Jakábová M., Lüscher E. F. Isolation and some properties of the heparin-neutralizing factor (PF4) released from human blood platelets. Experientia. 1972 Oct 15;28(10):1221–1223. doi: 10.1007/BF01946183. [DOI] [PubMed] [Google Scholar]
- LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
- Lüscher E. F., Käser-Glanzman R. Platelet heparin-neutralizing factor (platelet factor 4). Thromb Diath Haemorrh. 1975 Feb 28;33(1):66–72. [PubMed] [Google Scholar]
- Mills D. C., Robb I. A., Roberts G. C. The release of nucleotides, 5-hydroxytryptamine and enzymes from human blood platelets during aggregation. J Physiol. 1968 Apr;195(3):715–729. doi: 10.1113/jphysiol.1968.sp008484. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Moore S., Pepper D. S., Cash J. D. The isolation and characterisation of a platelet-specific beta-globulin (beta-thromboglobulin) and the detection of antiurokinase and antiplasmin released from thrombin-aggregated washed human platelets. Biochim Biophys Acta. 1975 Feb 27;379(2):360–369. doi: 10.1016/0005-2795(75)90143-9. [DOI] [PubMed] [Google Scholar]
- Niewiarowski S., Thomas D. P. Platelet factor 4 and adenosine diphosphate release during human platelet aggregation. Nature. 1969 Jun 28;222(5200):1269–1270. doi: 10.1038/2221269a0. [DOI] [PubMed] [Google Scholar]
- O'Brien J. R., Finch W., Clark E. Platelet-bound and soluble platelet factor 4: effects of aggregating agents, of aggregation, and of aspirin. Proc Soc Exp Biol Med. 1970 Sep;134(4):1128–1131. doi: 10.3181/00379727-134-34958. [DOI] [PubMed] [Google Scholar]
- Thomas D. P., Niewiarowski S., Ream V. J. Release of adenine nucleotides and platelet factor 4 from platelets of man and four other species. J Lab Clin Med. 1970 Apr;75(4):607–618. [PubMed] [Google Scholar]
- Walsh P. N., Gagnatelli G. Platelet antiheparin activity: storage site and release mechanism. Blood. 1974 Aug;44(2):157–168. [PubMed] [Google Scholar]
- Weiss H. J., Rogers J. Platelet factor 4 in platelet disorders--storage location and the requirement of endogenous ADP for its release. Proc Soc Exp Biol Med. 1973 Jan;142(1):30–35. doi: 10.3181/00379727-142-36951. [DOI] [PubMed] [Google Scholar]
- Youssef A., Barkhan P. Release of platelet factor 4 by adenosine diphosphate and other platelet-aggregating agents. Br Med J. 1968 Mar 23;1(5594):746–747. doi: 10.1136/bmj.1.5594.746. [DOI] [PMC free article] [PubMed] [Google Scholar]