F8 Human

Coagulation Factor-VIII Human
Cat. No.
BT10817
Source

Human Plasma.

Synonyms
Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Usage
Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Human Factor VIII produced from Human Plasma contains 2332 amino acids and having a molecular mass of 330kDa. Factor-VIII is effective in the correction and prevention of severe bleeding episodes attributed to Factor VIII deficiency.

The Factor-VIII is purified by proprietary chromatographic techniques.

Product Specs

Introduction
Factor VIII is a key component of the intrinsic pathway in blood coagulation. It acts as a cofactor for factor IXa, which, alongside calcium ions and phospholipids, activates factor X to factor Xa. This gene encodes for two transcript variants. Variant 1 translates into isoform a, a large glycoprotein that circulates in plasma complexed with von Willebrand factor. Isoform a undergoes multiple cleavage events. Variant 2 encodes for isoform b, a smaller protein primarily comprising the phospholipid binding domain of factor VIIIc, essential for coagulation. Genetic defects can lead to hemophilia A, a recessive X-linked coagulation disorder.
Description

Human Factor VIII, derived from human plasma, consists of 2332 amino acids and possesses a molecular mass of 330kDa. This factor plays a crucial role in correcting and preventing bleeding episodes associated with Factor VIII deficiency.

Purification of Factor-VIII is achieved through proprietary chromatographic techniques.

Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation

The lyophilized protein, at a concentration of 200IU/ml, is prepared from a sterile solution containing 1.5% Glycine, 160mM Calcium chloride, 25mM NaCitrate, and 25mM NaCl.

Solubility

Reconstitution of the lyophilized Factor-VIII is recommended using sterile 18MΩ-cm H2O to achieve a concentration of 200IU/ml. This solution can be further diluted with other aqueous solutions as needed.

Ensure the vial is at room temperature before reconstitution to prevent potential precipitation.

Stability

While lyophilized Factor-VIII remains stable at room temperature for up to one week, it is recommended to store it desiccated between 2-8°C. Following reconstitution, Factor-VIII should be stored at 4°C.

Biological Activity

The determined potency is 10 Units/mg.

Human Virus Test

Plasma is sourced from donors who have been vaccinated against Hepatitis B.

Every unit of plasma undergoes rigorous testing for HBsAg, Anti-HIV-1/2 plus O, and Anti-HCV using FDA-approved imported kits.

Synonyms
Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.
Source

Human Plasma.

Product Science Overview

Introduction

Coagulation Factor VIII, also known as anti-hemophilic factor (AHF), is a crucial blood clotting protein. It plays a significant role in the intrinsic pathway of blood coagulation. In humans, this protein is encoded by the F8 gene, located on the X chromosome .

Structure and Function

Factor VIII is a large glycoprotein that circulates in the plasma in an inactive form, bound to von Willebrand factor (vWF). Upon vascular injury, Factor VIII is activated and separates from vWF. The active form, known as Factor VIIIa, acts as a cofactor for Factor IXa. In the presence of calcium ions (Ca²⁺) and phospholipids, this complex converts Factor X to its activated form, Factor Xa .

Genetic Background

The F8 gene produces two alternatively spliced transcripts. Transcript variant 1 encodes a large glycoprotein, isoform a, which circulates in plasma and associates with vWF in a noncovalent complex. Transcript variant 2 encodes a smaller protein, isoform b, which consists primarily of the phospholipid-binding domain essential for coagulant activity .

Clinical Significance

Mutations or defects in the F8 gene lead to Hemophilia A, a common X-linked recessive bleeding disorder. Individuals with Hemophilia A have a deficiency or dysfunction of Factor VIII, resulting in impaired blood clotting and prolonged bleeding .

Production and Therapeutic Use

Human Coagulation Factor VIII is produced in the liver’s sinusoidal cells and endothelial cells outside the liver. It is prepared from human plasma that complies with specific monographs on plasma fractionation . Recombinant DNA technology has also enabled the production of synthetic Factor VIII, which is used in the treatment of Hemophilia A to replace the deficient or defective protein .

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