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Factor VIII

Factor VIII is a critical blood coagulation protein that plays a vital role in the hemostatic process.
Also known as antihemophilic factor, this large glycoprotein is essential for normal blood clotting and is deficient in individuals with the genetic disorder hemophilia A.
PubCompare.ai's AI-driven protocol comparison tool can help researchers optimize Factor VIII studies, locating the best experimental protocols from literature, preprints, and patents to ensure reproducible and accurate findings.
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Most cited protocols related to «Factor VIII»

The online version of RNAhybrid is an easy-to-use web interface in which the user can upload his or her own miRNA and candidate target sequences. A number of options give broad control over the kind of interaction the program looks for. A prevailing assumption about functional miRNA/target interactions is the necessity of a ‘seed’ (6 (link)), a perfect Watson–Crick match between miRNA and target at miRNA positions 2–7 or 8. However, experimentally validated miRNA/target duplexes in Caenorhabditis elegans appear to have unpaired nucleotides in this very seed region (18 (link)). In (11 (link)), it was experimentally shown that a target site with a seed region as small as only 4 nt can be functional as long as there is a compensatory hybridization at the miRNA 3′ end. RNAhybrid answers this heterogeneity by allowing the user to freely choose the (algorithmic) necessity and nature of a seed. First, the position and length of the seed can be defined; second, G:U wobble base pairs with the seed may be allowed or not and third, the request for a seed in the prediction can be refrained from altogether. The disallowance of G:U pairs in the seed is one of the new features and has been requested frequently. Another novelty is a ‘seed-match speed-up’, in which in an initial filter step, candidate targets are searched for seed matches, only upon finding such matches the complete hybridization around the seed-match is calculated. For non-G:U seeds of length 6, this implements a speed-up of a factor of 8. Another new option is to restrict possible sizes of unpaired regions, the loops. Both ‘bulge loops’, those with unpaired nucleotides on only one side, and ‘internal loops’, those with unpaired nucleotides on both sides, can be restricted in their length to user-defined values. This is especially useful in the prediction of plant miRNA targets. These targets usually exhibit only a small number of unpaired nucleotides, if any (8 (link)). Restricting loop sizes to, for example 1 nt, avoids the generation of spurious hits that do not conform to established miRNA/target hybridization rules in plants. Two other useful options are the number of target sites per miRNA and target candidate the program looks for, and a threshold for the minimum free energy of the hybridization, only below which target sites are reported. This latter option is the only option that is offered by Diana microT (15 (link)), in turn the only method besides RNAhybrid that is available for online miRNA target prediction in animals. The program miRU (19 (link)) is available as an online tool, but is geared towards prediction of potential targets in plants.
Publication 2006
A-factor (Streptomyces) Animals Caenorhabditis elegans Crossbreeding factor A Factor VIII Genetic Heterogeneity MicroRNAs Nucleotides Plant Embryos Plants

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Publication 2009
beta-Globins Biological Assay Diagnosis Escherichia coli Factor VIII Fluorescence Genes Genome HeLa Cells Homo sapiens Malignant Neoplasms Oligonucleotide Primers Platinum Real-Time Polymerase Chain Reaction Solon Sulfoxide, Dimethyl Taq Polymerase Telomere Tromethamine

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Publication 2012
Alcohols Cannabis sativa Factor VIII Motivation Paranoia Physical Examination Reading Frames Self-Perception Withdrawal Symptoms Young Adult

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Publication 2009
Affective Symptoms Antidepressive Agents Antipsychotic Agents Aripiprazole Attention Auditory Perception Barakat syndrome Biopharmaceuticals Bipolar Disorder BLOOD Bupropion Central Nervous System Stimulants Clonazepam Cognition Depression, Bipolar Diagnosis Divalproex Sodium Emotions Face factor A Factor VIII Fingers Genes, vif Hospitalization Inpatient Lamotrigine Lithium Mania Manic Episode Memory Mood Neuropsychological Tests Pharmaceutical Preparations Phenotype Psychological Inhibition Psychotic Disorders Quetiapine Risperidone Schizoaffective Disorder Sedatives Stroop Test Tests, Diagnostic Thyroid Gland Thyroxine Tranquilizing Agents VP-P protocol
Bleeding score data (which were obtained for all subjects by expert-administration of the BAT) along with the von Willebrand factor (VWF) laboratory results, when available [VWF:Ag (VWF:antigen), VWF:RCo (VWF:ristocetin co-factor), FVIII:C (factor VIII coagulant)] and demographic data, were collected from 1422 normal subjects; adult data (n = 1079) were collected from individuals ≥18 years using the MCMDM-1VWD BQ (n = 294), Condensed MCMDM-1VWD BQ (n = 660), and ISTH-BAT (n = 125), while paediatric data (n = 343) were collected from individuals <18 years using the PBQ (n = 324) and ISTH-BAT (n = 19). A consistent definition of ‘normal’ was used across all studies. For adults and children, the specific wording was either individuals with no history of a known or previously diagnosed bleeding disorder or individuals with no known problem with bleeding or bruising, or both.
The data sets were merged using the Bleeding Phenotype Ontology (BPO), which was developed to explicitly represent the relationships among bleeding signs, symptoms, disorders, and treatments within the bleeding questionnaires [6 (link)]. The ontology is publicly available in the Bioportal ontology registry (http://bioportal.bioontology.org/ontologies/1166). Data elements (individual questions) from the four questionnaires were analysed to determine where they map to the BPO. From such analysis, a subset of common questions were identified and were utilized to compile data collected using different BATs for unified and standardized comparison. The aggregate data set was then stored on a MySQL database to facilitate data retrieval of various subgroups of patients. Data were separated into males and females for analysis. The mean and standard deviation (SD) were determined. Outlier values were defined as those above or below the mean ± 3 SDs. Once the outliers were removed, the middle 95th percentile was used to determine the normal range.
Publication 2014
Adult Blood Coagulation Disorders Child Chiroptera Coagulants Factor VIII Factor VIII-Related Antigen Females Limulus clotting factor C Males Patients Phenotype Ristocetin

Most recents protocols related to «Factor VIII»

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Publication 2023
Actins Biological Assay Chromogenic Substrates Factor VIII Freezing Hemophilia A Patients Plasma

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Publication 2023
Activated Partial Thromboplastin Time Ellagic Acid Factor VIII Plasma Silicon Dioxide

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Publication 2023
antihemophilic factor, human recombinant residues 743-1636 deleted BAX 855 Factor VIII Gifts Hemophilia A Plasma Polyethylene Glycols rurioctocog alfa pegol Technique, Dilution turoctocog alfa
Using the biomass, carotenoids content and viable yeast count of SRY, eight factors were selected as the initial pH value (A), soybean oil content (B), glucose content (C), hydrogen peroxide content (D), vitamin B1 content (E), manganese ion content (F), magnesium ion content (G) and zinc ion content (H) for Plackett-Burman test. The range of optimal culture conditions for the 8 factors was taken at high (+1) and low (−1) levels, respectively, and the PB test design factors and levels are shown in Supplementary Table 2.
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Publication 2023
Carotenoids Factor VIII Glucose Magnesium Manganese Peroxide, Hydrogen Soybean oil Thiamine Yeast, Dried Zinc
MR measurements were acquired using a 9.4 T Bruker Biospec 94/20 small animal scanner equipped with a 720 mT/m gradient system (Bruker BioSpin GmbH, Ettlingen, Germany) and different combinations of transmit coils and receive-only coils. First, an anatomical image was acquired to identify the slice position for fMRI measurements: 2D Turbo spin echo sequence (RARE), TR/TEEff = 2,000/50 ms, RARE factor 8, Matrix 256 × 256, field of view (FOV) 28 mm × 26 mm, slice thickness 1.2 mm, 9–12 contiguous slices. Subsequently, B0 homogenization was performed using the MAPSHIM Bruker routine. Functional GE-EPI and SE-EPI measurements were performed using a single-shot EPI sequence (same FOV as anatomy, Matrix: 80 × 80, 1.2 mm slice thickness; GE-EPI: TE 18 ms, TR 100/125/1,000 ms, flip angle 18/21/60 or 65°, 1/2/9 or 12 slices; SE-EPI: TE 35.9 ms, TR 250 ms, flip angle 90°, 3 slices). One fMRI measurement lasted between 5 and 25 min (Supplementary Table 1).
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Publication 2023
Animals ECHO protocol Factor VIII fMRI

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Factor VIII is a laboratory reagent used in coagulation testing. It is a protein that plays a crucial role in the blood clotting process. The core function of Factor VIII is to facilitate the activation of Factor X, which is an essential step in the formation of a stable blood clot.
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