Relevant bibliographies by topics / Rg-ii

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Rg-ii'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Rg-ii.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Rg-ii"

1

Somai, Benesh M., Ralph A. Dean, Mark W. Farnham, Thomas A. Zitter, and Anthony P. Keinath. "Internal Transcribed Spacer Regions 1 and 2 and Random Amplified Polymorphic DNA Analysis of Didymella bryoniae and Related Phoma Species Isolated from Cucurbits." Phytopathology® 92, no. 9 (September 2002): 997–1004. http://dx.doi.org/10.1094/phyto.2002.92.9.997.

Full text
Abstract:
Didymella bryoniae (anamorph Phoma cucurbitacearum) is the causal agent of gummy stem blight, although other Phoma species are often isolated from cucurbit plants exhibiting symptoms of the disease. The molecular and phylogenetic relationships between D. bryoniae and these Phoma species are unknown. Isolates of D. bryoniae and Phoma obtained from cucurbits grown at various geographical locations in the United States were subjected to random amplified polymorphic DNA (RAPD) analysis and internal transcribed spacer (ITS) sequence analysis (ITS-1 and ITS-2) to determine the molecular and phylogenetic relationships within and between these fungi. Using RAPD fingerprinting, 59 isolates were placed into four phylogenetic groups, designated RAPD group (RG) I, RG II, RG III, and RG IV. D. bryoniae isolates clustered in either RG I (33 isolates), RG II (12 isolates), or RG IV (one isolate), whereas all 13 Phoma isolates clustered to RG III. There was greater than 99% sequence identity in the ITS-1 and ITS-2 regions between isolates in RG I and RG II, whereas isolates in RG III, P. medicaginis ATCC 64481, and P. exigua ATCC 14728 clustered separately. On muskmelon seedlings, a subset of RG I isolates were highly virulent (mean disease severity was 71%), RG II and RG IV isolates were slightly virulent (mean disease severity was 4%), and RG III isolates were nonpathogenic (disease severity was 0% for all isolates). The ITS sequences indicate that RG I and RG II are both D. bryoniae, but RAPD fingerprints and pathogenicity indicate that they represent two different molecular and virulence subgroups.
APA, Harvard, Vancouver, ISO, and other styles
2

Hiroguchi, Akihiko, Shingo Sakamoto, Nobutaka Mitsuda, and Kyoko Miwa. "Golgi-localized membrane protein AtTMN1/EMP12 functions in the deposition of rhamnogalacturonan II and I for cell growth in Arabidopsis." Journal of Experimental Botany 72, no. 10 (February 15, 2021): 3611–29. http://dx.doi.org/10.1093/jxb/erab065.

Full text
Abstract:
Abstract Appropriate pectin deposition in cell walls is important for cell growth in plants. Rhamnogalacturonan II (RG-II) is a portion of pectic polysaccharides; its borate crosslinking is essential for maintenance of pectic networks. However, the overall process of RG-II synthesis is not fully understood. To identify a novel factor for RG-II deposition or dimerization in cell walls, we screened Arabidopsis mutants with altered boron (B)-dependent growth. The mutants exhibited alleviated disorders of primary root and stem elongation, and fertility under low B, but reduced primary root lengths under sufficient B conditions. Altered primary root elongation was associated with cell elongation changes caused by loss of function in AtTMN1 (Transmembrane Nine 1)/EMP12, which encodes a Golgi-localized membrane protein of unknown function that is conserved among eukaryotes. Mutant leaf and root dry weights were lower than those of wild-type plants, regardless of B conditions. In cell walls, AtTMN1 mutations reduced concentrations of B, RG-II specific 2-keto-3-deoxy monosaccharides, and rhamnose largely derived from rhamnogalacturonan I (RG-I), suggesting reduced RG-II and RG-I. Together, our findings demonstrate that AtTMN1 is required for the deposition of RG-II and RG-I for cell growth and suggest that pectin modulates plant growth under low B conditions.
APA, Harvard, Vancouver, ISO, and other styles
3

O’Neill, Malcolm A., Ian Black, Breeanna Urbanowicz, Vivek Bharadwaj, Mike Crowley, Sabina Koj, and Maria J. Peña. "Locating Methyl-Etherified and Methyl-Esterified Uronic Acids in the Plant Cell Wall Pectic Polysaccharide Rhamnogalacturonan II." SLAS TECHNOLOGY: Translating Life Sciences Innovation 25, no. 4 (May 29, 2020): 329–44. http://dx.doi.org/10.1177/2472630320923321.

Full text
Abstract:
Rhamnogalacturonan II (RG-II) is a structurally complex pectic polysaccharide that exists as a borate ester cross-linked dimer in the cell walls of all vascular plants. The glycosyl sequence of RG-II is largely conserved, but there is evidence that galacturonic acid (GalA) methyl etherification and glucuronic acid (GlcA) methyl esterification vary in the A sidechain across plant species. Methyl esterification of the galacturonan backbone has also been reported but not confirmed. Here we describe a new procedure, utilizing aq. sodium borodeuteride (NaBD4)-reduced RG-II, to identify the methyl esterification status of backbone GalAs. Our data suggest that up to two different GalAs are esterified in the RG-II backbone. We also adapted a procedure based on methanolysis and NaBD4 reduction to identify 3-, 4-, and 3,4- O-methyl GalA in RG-II. These data, together with matrix-assisted laser desorption/ionization–time-of-flight mass spectrometry (MALDI-TOF) MS analysis of sidechain A generated from selected RG-IIs and their NaBD4-reduced counterparts, suggest that methyl etherification of the β-linked GalA and methyl esterification of the GlcA are widespread. Nevertheless, the extent of these modifications varies between plant species. Our analysis of the sidechain B glycoforms in RG-II from different dicots and nonpoalean monocots suggests that this sidechain has a minimum structure of an O-acetylated hexasaccharide (Ara-[MeFuc]-Gal-AceA-Rha-Api-). To complement these studies, we provide further evidence showing that dimer formation and stability in vitro is cation and borate dependent. Taken together, our data further refine the primary sequence and sequence variation of RG-II and provide additional insight into dimer stability and factors controlling dimer self-assembly.
APA, Harvard, Vancouver, ISO, and other styles
4

PUTHENPURAKAL, TONY J. "Local cohomology modules of invariant rings." Mathematical Proceedings of the Cambridge Philosophical Society 160, no. 2 (December 18, 2015): 299–314. http://dx.doi.org/10.1017/s0305004115000729.

Full text
Abstract:
AbstractLetKbe a field and letRbe a regular domain containingK. LetGbe a finite subgroup of the group of automorphisms ofR. We assume that |G| is invertible inK. LetRGbe the ring of invariants ofG. LetIbe an ideal inRG. Fixi⩾ 0. IfRGis Gorenstein then:(i)injdimRGHiI(RG) ⩽ dim SuppHiI(RG);(ii)$H^j_{\mathfrak{m}}$(HiI(RG)) is injective, where$\mathfrak{m}$is any maximal ideal ofRG;(iii)μj(P, HiI(RG)) =μj(P′,HiIR(R)) whereP′ is any prime inRlying aboveP.We also prove that ifPis a prime ideal inRGwithRGPnot Gorensteinthen either the bass numbersμj(P, HiI(RG)) is zero for alljor there existscsuch thatμj(P, HiI(RG)) = 0 forj<candμj(P, HiI(RG)) > 0 for allj⩾c.
APA, Harvard, Vancouver, ISO, and other styles
5

Yapo, Beda M. "Pectin Rhamnogalacturonan II: On the “Small Stem with Four Branches” in the Primary Cell Walls of Plants." International Journal of Carbohydrate Chemistry 2011 (December 29, 2011): 1–11. http://dx.doi.org/10.1155/2011/964521.

Full text
Abstract:
Rhamnogalacturonan II (RG-II) is a type of block copolymer of complex pectins that represents a quantitatively minor component of the primary cell walls of land (vascular) plants. The structural composition of RG-II is almost totally sequenced and appears to be remarkably conserved in all tracheophytes so far examined. The backbone of RG-II, released from complex (cell wall) pectins by endo-polygalacturonase (Endo-PG) treatment, has been found to contain up to 15 (1→4)-linked-α-D-GalpA units, some of which carry four well-defined side chains, often referred to as A-, B-, C-, and D-side chains. Nevertheless, the relative locations on the backbone of these four branches, especially the A chain, remain to be ascertained. A combination of different data suggests that neither the terminal nonreducing GalA nor the contiguous GalA unit is likely to be the branching point of the A chain, but probably the ninth GalA residue from the reducing end, assuming a minimum backbone length of 11 (1→4)-linked-α-d-GalpA. The latest reports on RG-II are here highlighted, with a provided update for the macrostructure and array of functionalities.
APA, Harvard, Vancouver, ISO, and other styles
6

Kalinkov, M., and I. Kuneva. "Space Distribution of the Richest Abell Clusters of Galaxies." Symposium - International Astronomical Union 130 (1988): 533. http://dx.doi.org/10.1017/s0074180900136629.

Full text
Abstract:
We discuss four samples from the Abell (1958) catalog of clusters of galaxies. Our samples are drawn out from the Abell sample and all clusters have richness 2 and 3. With Ho = 100 km/s/Mpc and qo = +1, we examine the following volumes, defined for both galactic hemispheres: (i)RG 3: b 40° for 0° < 1 360° and b 30° for 90° < 1 240°, distance 300 < R < 750 Mpc, N = 35 clusters, 30 of which with known redshift;(ii)RG 3: b −35° for 15° < 1 232°, 150 < R < 600 Mpc, N = 15 (13);(iii)RG 2: b and 1 as (i), 60 < R < 525 Mpc, N = 110 (55);(iv)RG 2: b and 1 as (ii), 120 < R < 600 Mpc, N = 102(14).
APA, Harvard, Vancouver, ISO, and other styles
7

Duhrsen, U., JL Villeval, J. Boyd, G. Kannourakis, G. Morstyn, and D. Metcalf. "Effects of recombinant human granulocyte colony-stimulating factor on hematopoietic progenitor cells in cancer patients." Blood 72, no. 6 (December 1, 1988): 2074–81. http://dx.doi.org/10.1182/blood.v72.6.2074.2074.

Full text
Abstract:
Abstract Hematopoietic progenitor cell levels were monitored in the peripheral blood and bone marrow of 30 cancer patients receiving recombinant human granulocyte-colony stimulating-factor (rG-CSF) in a phase I/II clinical trial. The absolute number of circulating progenitor cells of granulocyte-macrophage, erythroid, and megakaryocyte lineages showed a dose-related increase up to 100-fold after four days of treatment with rG-CSF and often remained elevated two days after the cessation of therapy. The relative frequency of different types of progenitor cells in peripheral blood remained unchanged. The frequency of progenitor cells in the marrow was variable after rG-CSF treatment but in most patients was slightly decreased. The responsiveness of bone marrow progenitor cells to stimulation in vitro by rG-CSF and granulocyte- macrophage colony-stimulating factor did not change significantly during rG-CSF treatment. In patients nine days after treatment with melphalan and then rG-CSF, progenitor cell levels were very low with doses of rG-CSF at or below 10 micrograms/kg/d, but equaled or exceeded pretreatment values when 30 or 60 micrograms/kg/d of rG-CSF was given.
APA, Harvard, Vancouver, ISO, and other styles
8

Duhrsen, U., JL Villeval, J. Boyd, G. Kannourakis, G. Morstyn, and D. Metcalf. "Effects of recombinant human granulocyte colony-stimulating factor on hematopoietic progenitor cells in cancer patients." Blood 72, no. 6 (December 1, 1988): 2074–81. http://dx.doi.org/10.1182/blood.v72.6.2074.bloodjournal7262074.

Full text
Abstract:
Hematopoietic progenitor cell levels were monitored in the peripheral blood and bone marrow of 30 cancer patients receiving recombinant human granulocyte-colony stimulating-factor (rG-CSF) in a phase I/II clinical trial. The absolute number of circulating progenitor cells of granulocyte-macrophage, erythroid, and megakaryocyte lineages showed a dose-related increase up to 100-fold after four days of treatment with rG-CSF and often remained elevated two days after the cessation of therapy. The relative frequency of different types of progenitor cells in peripheral blood remained unchanged. The frequency of progenitor cells in the marrow was variable after rG-CSF treatment but in most patients was slightly decreased. The responsiveness of bone marrow progenitor cells to stimulation in vitro by rG-CSF and granulocyte- macrophage colony-stimulating factor did not change significantly during rG-CSF treatment. In patients nine days after treatment with melphalan and then rG-CSF, progenitor cell levels were very low with doses of rG-CSF at or below 10 micrograms/kg/d, but equaled or exceeded pretreatment values when 30 or 60 micrograms/kg/d of rG-CSF was given.
APA, Harvard, Vancouver, ISO, and other styles
9

Gerbaud, Vincent, Nadine Gabas, Jacques Blouin, Patrice Pellerin, and Michel Moutounet. "Influence of wine polysaccharides and polyphenols on the crystallization of potassium hydrogen tartrate." OENO One 31, no. 2 (June 30, 1997): 65. http://dx.doi.org/10.20870/oeno-one.1997.31.2.1087.

Full text
Abstract:
<p style="text-align: justify;">Potassium hydrogen tartrate (KHT) is a natural compound of wine which crystallizes spontaneously. Whereas crystal occurrence can be considered as a sign of goodness in old and famous vintage wines, it is usually thought of as a serious failure for most consumers, even though it does not alter wine quality. An efficient and cheap process of wine stabilization versus KHT crystallization has to be found yet. An alternate process to physical stabilization of wines may lie in the addition of an inhibitor of KHT crystallization. Bearing this in mind, we have investigated the effect of several polysaccharides and total polyphenols fractions on KHT crystallization through the measurement of crystal appearance time (induction time) with and without any macromolecule.</p><p style="text-align: justify;">Red wines. white wines and KHT supersaturated hydroalcoholic solution exhibit different behaviours versus KHT crystallization, red wines crystallizing less easily than white wines and far less easily th an hydroalcoholic solution. Those differences can be explained by our results. The innate inhibition of red wines is the sum of the inhibiting effects of rhamnogalacturonans (RG-I and RG-II), yeasts mannoproteins present in wine and of total polyphenols. Arabinogalactans show no effect on KHT crystallization whereas rhamnogalacturonans display a peculiar concentration dependent behaviour : crystal appearance is accelerated at low concentration and slowed at high concentration. More strongly observed for RG-1I2 fractions, this feature is confirmed by a theory of crystallization in the presence of an additive. The theory predicts that RG-I has almost no effect on the nucleation phenomenon whereas RG-1I2 enhances this phenomenon. Both RG-l and RG-1I2 inhibit crystal growth by adsorption on crystal growth sites, as contirmed by single crystal growth experiments.</p><p style="text-align: justify;">Red wine tendency to be more difficult to stabilize versus KHT crystallization by cooling than white wine is due to the concentration in RG-II and in total polyphenols : low RG-II content in white wine accelerates crystal appearance whereas high RG-Il content in red wine slows crystal appearance. Thus it intensifies the inhibition due to the high total polyphenol content in red wine.</p><p style="text-align: justify;">Mannoproteins extracted from yeast cell walls inhibit KHT crystallization far more than yeast mannoproteins present in wine. However, their efficiency is reduced as temperature is lowered.</p>
APA, Harvard, Vancouver, ISO, and other styles
10

Anderson, Ethan J., and P. Darrell Neufer. "Type II skeletal myofibers possess unique properties that potentiate mitochondrial H2O2 generation." American Journal of Physiology-Cell Physiology 290, no. 3 (March 2006): C844—C851. http://dx.doi.org/10.1152/ajpcell.00402.2005.

Full text
Abstract:
Mitochondrial dysfunction is implicated in a number of skeletal muscle pathologies, most notably aging-induced atrophy and loss of type II myofibers. Although oxygen-derived free radicals are thought to be a primary cause of mitochondrial dysfunction, the underlying factors governing mitochondrial superoxide production in different skeletal myofiber types is unknown. Using a novel in situ approach to measure H2O2 production (indicator of superoxide formation) in permeabilized rat skeletal muscle fiber bundles, we found that mitochondrial free radical leak (H2O2 produced/O2 consumed) is two- to threefold higher ( P < 0.05) in white (WG, primarily type IIB fibers) than in red (RG, type IIA) gastrocnemius or soleus (type I) myofibers during basal respiration supported by complex I (pyruvate + malate) or complex II (succinate) substrates. In the presence of respiratory inhibitors, maximal rates of superoxide produced at both complex I and complex III are markedly higher in RG and WG than in soleus muscle despite ∼50% less mitochondrial content in WG myofibers. Duplicate experiments conducted with ±exogenous superoxide dismutase revealed striking differences in the topology and/or dismutation of superoxide in WG vs. soleus and RG muscle. When normalized for mitochondrial content, overall H2O2 scavenging capacity is lower in RG and WG fibers, whereas glutathione peroxidase activity, which is largely responsible for H2O2 removal in mitochondria, is similar in all three muscle types. These findings suggest that type II myofibers, particularly type IIB, possess unique properties that potentiate mitochondrial superoxide production and/or release, providing a potential mechanism for the heterogeneous development of mitochondrial dysfunction in skeletal muscle.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Rg-ii"

1

Bourlard, Thierry. "Mise en évidence de nouvelles activités pectine méthyltransférases chez le lin. Purification et caractérisation de deux méthyltransférases." Rouen, 1999. http://www.theses.fr/1999ROUES047.

Full text
Abstract:
Les pectine méthyltransférases catalysent la méthylestérification des résidus d'acide galacturonique constitutifs des pectines. Les suspensions cellulaires de lin contiennent des enzymes ayant la capacité de catalyser la methylestérification des composés de type homogalacturonane mais aussi des composés pectiques plus complexes comme les RG-I, les RG-II, et les xylogalacturonanes. Deux activités ont été mises en évidence in vitro sur les homogalacturonanes : la PMT7 et la PMT5. La PMT7 est particulièrement active sur les homogalacturonanes fortement méthylestérifiés à pH7 et présente un pic d'activité pendant la phase rapide de croissance cellulaire. D'un point de vue physiologique, cette enzyme pourrait être responsable de la large méthylestérification des pectines. La PMT5 est quant à elle active à pH acide sur des homogalacturonanes de faible degré d'estérification (de 0,1). La PMT5 présente un pic d'activité durant la phase de latence et de maturation cellulaire. Pendant la phase de croissance, cette enzyme pourrait expliquer la présence concomitante dans les parois de pectines faiblement et fortement méthylestérifiées. Durant la maturation cellulaire, la PMT5 pourrait assurer une méthylestérification minimale. Un protocole de purification des pectine méthyltransférases a été établi et mis en oeuvre pour la purification de la PMT5 et de la PMT7, qui ont été caractérisées d'un point de vue catalytique et physico-chimique. La PMT5 et la PMT7 ont une affinité modérée pour la SAM (Km de 70 et 40 microM), et une faible affinité pour le substrat pectique (Km de 1,57 g/L et 0,68 g/L). Ces deux enzymes présentent in vitro des Vmax de 0,45 et 0,25 nkatal par mg de protéines. La SAH est un inhibiteur compétitif des PMTs (Ki de 1,77 et 4,1 microM) alors que les polymères pectiques de DE 1 agissent comme des inhibiteurs non compétitifs (Ki de 20 g/L et de 29,8 g/L). La PMT5 a une masse moléculaire native de 40 kDa et un pI de 6,3 alors que la PMT7 présente une masse moléculaire native de 120 kDa et un pI de 8,9. Ces deux protéines libèrent spontanément un monomère actif de 18 kDa et de pI acide (4,3). En SDS-PAGE, une seule bande protéique de 18 kDa est identifiée pour la PMT7 et la PMT5. Cette bande protéique est photomarquée lorsque les protéines purifiées sont traitées en présence de S-adénosyl-L-[méthyle 14C]-méthionine sous UV.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Rg-ii"

1

Tahiri, M., P. Pellerin, J. C. Tressol, T. Doco, Y. Rayssiguier, and C. Coudray. "Rhamnogalacturonan II (RG-II), a Pectic Polysaccharide Present in the Vegetable-Derived Products, Strongly Decreases Lead Tissue Accumulation." In Trace Elements in Man and Animals 10, 703–4. New York, NY: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_228.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

"Lecture 14. Renormalization Group; RG Flow." In Quantum Field Theory II, 141–54. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789813234192_0014.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

"WaymackJP, Miskell P, Gonce S. Anesth Analg 69:163-198, 1989. 27. W 19 a8y7m . ackJP, Warden GD, Alexander JW, Miskell P, Gonce S. J Surg Res 42:528-535, 28. JWSauyrmgaRceksJP4 , 9 M :3 o2l8d -a 3 w 32 er , L 19 L 9 , 0 L . owry SF, Guzman RF, Okerberg CV, Mason AD, Pruitt BA. 29. WaymackJP and Yurt RW. J Surg Res 48:147-143, 1990. 30. AWnanym Su arcgk JP, 20M4( c6N ): e6a8l1N -6 , 8W5, a 1 rd 9e8n6 . GD, Balakrishnan K, Gonce S, Alexander JW, Miskell P. 31. W BA aJyrm . aAcrkcJhPS , u H rg e rn 1a2n6d : e5z9 -G 62 , , C1a9p9p1e . lli PJ, Burleson DG, Guzman RF, Mason AD Jr, Pruitt 32. Gantt CL. Lancet ii:363, 1981. 33. Chung M, Steionmetz OK, Gordon PH. BrJ Surg 80:427-432, 1993. 34. W 19 e9i2 ss . MM, Jauch KW, Delanoff CL, Memple W, Schildberg FW. Proc ASCO 11:172, 35. H Si anaggh , 1S9K8 . 8. The Blood Bank, Rotterdam: Cip - Gegevens Koninklijke Bibiliotheek, Den 36. Taylor C and Faulk WP. Lancet ii:68-69, 1981. 37. Peters WR, Fry RD, Fleshman JW, Kodner IJ. Dis Col & Rect 32(9):749-753, 1989. 38. Williams JG and Hughes LE. Lancet H31-132, 1989. 39. SGta eu st proW en H te , roBl ra SnudpA pl , 2W6: e 8 te 1 r -m 86 a , n1I9T9 , 1 . Zwinderman KH, Lamers CBHW, Gooszen. Scand J 40. Scott ADN, Ritchie JK, Phillips RKS. BrJ Surg 78:455-4587, 1991. 41. Tadros Tamer, Wobbes T, Hendriks T. Ann Surg 215(3):276-281, 1992. 42. R 74 o : s3s9 in -i 46A , A 1 , 9 F 84 a . ustman D, Woda BA, Like AA, Szymanski I, Mordes JP. J Clin Invest 43. Tartter PI, Heimann TM, Aufses AH Jr. Am J Surg 151: 358, 1986. 44. T ca anrc tt eerrpPaIt . i en Ttrsa . ns V fu osxioSnanhg is to 5r6y : , 80T , c1e9l8l9s . ub sets and natural killer cytotoxicity in colorectal 45. Beck I, Scott JS, Pepper M, Speck EH. Am J Repro Immunol 1:224, 1981. 46. Tartter PI. Transfusion 28:593-596, 1988." In Transfusion Immunology and Medicine, 302–56. CRC Press, 1995. http://dx.doi.org/10.1201/9781482273441-31.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Rg-ii"

1

Vila, V., E. Reganon, J. Aznar, V. Lacueva, and M. Ruano. "EFFECT OF TREATMENT WITH STREPTOKINASE AND HEPARIN ON FIBRINOGEN, FIBRIN AND RELATED PROTEINS IN ACUIE MYOCARDIAL INFARCTION (/ME) PATIENTS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644895.

Full text
Abstract:
The properties of fibrinogen and fibrin, the levels of fibrincpeptide A (FPA) and fibrin(ogen) degradation products (FDP) were studied in 34 patients with AMI who were undergoing thrombolytic and heparin therapy. They were classified into 6 groups accordingto their stage of treatment: group 1, before intravenous administration of 800.000 U streptokinase over 30 min; group 2, after a<Mnistraticn of SK but before adninistraticn of heparin; group 3, during 24 h ofthe 5 ng/h heparin continuous infusion; group 4, during 48-72 h of the 16.6 ng/h heparin continuous infhsion; group 5, after 1 week of administration of SK and with a bolus inyection of 50 rg heparin every 4 h; group 6, patients who were undergoing only heparin treatment. The Fg 1/ Fg II ratio varies during treatment with SK and heparin. In group 1 a sligjnt increase (2.5) is observed. Group 2 shows a significantdecrease (0.6) as a result of fibrinolysis. In group3 the ratio reaches normal value (1.8) while in the fourth group it is twice the normal value (4). The value for group 5 is nearly normal (2.1), and in group 6 it reaches values similar to those obtained in group 4, which implies that the rise in the Fgl/Fgll ratio is not a result of fibrinolytic treatment. TheFPA level shows and increase in patients with AMI (group 1,126 ng/ml). When SK treatment is applied (group 2), FPA decreases to 52 ng/ml. Later treatment with heparin (group-3, 82; group-4, 44 and group-5, 81ng/ml) does not neutralize thrcmbinic activity. Patients treated only with heparin (group 6) show an FPAvalue of 19 ng/ml, which is lower than in the other groups. All of this indicates that thrombin is activated after fibrinolytic treatment. FDP values show asignificant increase in the six groups (1, 53; 2, 430; 3, 128; 4, 270; 5, 139 and 6, 141 ug/ml), which indicates that during treatment with heparin the fibrinolytic activity persists. he formation of highly cross-linked fibrin is altered in groups 1,2,3 and 4,as a consequence of circulating FDP effect and fibrincgeno- lysis.The permeability of the fibrin clotdecreases in groups 1 (0.42), 2 (1.3), 4 (1.1) and 5(0.5 ml/s/ng) and increases in group 2 (23.2 ml/s/nig) with respect to the normal plasma value (3.2 ml/s/nrg). The decrease in permeability must be related to the existence of hypercoagulability resistant to heparinization. FPA values, tine Fgl/Fgll ratio, andfibrin permeability can be used to evaluate the degree of thrcmbin activity during thrombolytic treatmentinAMI.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Rg-ii' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography