Slide 2 of 5 of Coagulación sanguínea. VÍA EXTRÍNSECA; 2. Vía Intrínseca; 3. Conversión de la Vías y cascada de la coagulación. Enzimas que actuan en la coagulación.c. Asignatura: .. Al final, las vías intrínse cas y extrínsecas confluyen en una secuencia de etapas en común. hasta. Los factores de la coagulación de la vía extrínseca se activan al producirse el La coagulación también puede activarse por la vía intrínseca al entrar en.

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En humanos, el factor XI se encuentra codificado por el gen F Anticoagulant activity, marine algae, Gulf of Mexico, heparin.

Journal of Applied Phycology El factor IXa, por otro lado, activa al factor X. A fibrinolytic enzyme from a marine green alga, Codium latum.

Occurrence of heparin in the invertebrate Styela plicata Tunicata is restricted to cell layers facing the outside environment. The coagulation disorders have increased in the last decades and no new substances had been discovered that could regulate this illness. Propiedades anticoagulantes de ed de algas marinas mexicanas: An anticoagulant proteoglycan from the marine green alga, Codium pugni-formis.

CASCADA DE COAGULACION by mitzy sabrina rodriguez anaya on Prezi

Human plasma was obtained by venous puncture with a disposable syringe, blood was combined with 3. It is known that species of Chlorophyta synthesized polydisperse heteropolysaccarides with low sulfate content, glucoronoxilorhamans, glucoronoxilorhamagalactans and xyloarabinogalactans, some of them with a potent anticoagulant activity Uehara et al.

Results Results for algal extracts in both anticoagulant tests are in table 1. The extracts of Anadyomene stellata Wulfen C. Hemagglutinins in red sea-weeds. Comparative Biochemistry and Physiology B: On the quantitative estimation of prothrombin.


The samples for this study were manually collected from the seven localities described above, from the Gulf of Mexico and Mexican Caribbean sea during May to October figure 1were classified by genus and transported frozen to the laboratory using solid CO 2. It has been reported also that brown algae have a potent anticoagulant activity in fucoidans Chevolot et al.

These localities were chosen due to the relative abundance of the algae. Agardh, ChlorophytaLobophora variegata Lamoroux Womersley Phaeophyta and Liagora farinosa Lamouroux Rhodophyta were as potent as heparin impeding the clot formation in both thrombin and prothrombin time tests.

Seasonal variations in the production of antifungal substances by some dictyotales cqscada algae from the French Mediterranean coast.

Factor de coagulación XI

Purification and characterization of two fibrinolytic enzymes from the marine green alga, Codium intricatum.

The extracts could act preventing the conversion of prothrombin to thrombin, also they could act stopping the transformation of fibrinogen to convert it to fibrin o even in the polymerization of this last molecule. In the laboratory the material was thawed at room temperature and a fraction of this was preserved in glycerinated formaldehyde for species determination and Voucher organisms, this specimens were kept in our laboratory as internal reference material.

Results for algal extracts in both anticoagulant tests are in table 1. We collected algal material along the central coast of Veracruz, and some localities of Campeche, Yucatan and Quintana Inrinseca States in order to have samples of the coast of the Atlantic Ocean in Mexico Gulf of Mexico and Coaggulacion sea.


Vistas Leer Editar Ver historial. Agardh, Caulerpa cupressoides West in Vahl C.

Finally, sample collected in April of change the anticoagulant activity been active only in the thrombin time test.

The mixture was homogenized in a Waring blender, centrifuged at x g for 15 minutes and supernatant filtered through 0. Rhamnan sulfate from cell walls of Monostroma latissimum. The reason for using a general extraction method of molecules extracts from algae in saline or PB as Deacon-Smith and Rogers and Deacon-Smith et al.

Supporting the use of this method is the evidence that the results of Deacon et al. American Journal of Human Genetics 48 5: Thrombosis Research 55 3: We also detected a variation in the anticoagulant potency, a change in the anticoagulant activity related with the intrinsic or extrinsic pathways of coagulation or even the disappearance of the anticoagulant activity in both test of Caulerpa cupressoidesC.

Cytogenetics and Cell Genetics 52 Biochimica et Biophysica Acta The results showed other algae with slightly inhibition of clot formation activity, it is not common to consider this species for further investigation, nevertheless the retardation of formation of clot by Penicillus capitatusa species evolutionary related to Halimeda genus Vroom et al.