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Biomedical subjects

L J Warnock

Publications and source records attributed to L J Warnock.

3 recordsLinked to original sources

The application of molecular biology techniques to haemostasis and thrombosis.

One may no longer consider coagulation research without encompassing the wealth of knowledge available from the application of molecular biology techniques. This innovative form of research has not proceeded to the exclusion of more conventional techniques, and moreover has provided support for basic scientific hypotheses. This paper discusses the molecular biology techniques currently used in the study of haemostatic and thrombotic disorders and gives an outline of the evolution of such techniques which have taken place at a staggering pace. The article includes specific examples of how results from molecular studies are directly applied to hereditary haemostatic and thrombotic diseases to support clinical diagnosis and to increase our understanding of the biochemical processes involved in the disorders. The reader is referred to several reviews for detailed lists of genetic defects revealed by molecular biological techniques.

Blood Coagulation Disorders

GENESRCH: a computer program for restriction fragment analysis.

We describe a program GENESRCH which has been written to enable the design of efficient restriction fragment analysis of DNA from patients with hereditary disorders. The program identifies homology of DNA sequences up to 20 base pairs in length, calculates the fragment sizes and indicates the position of enzyme restriction sites within the gene of interest. GENESRCH is written in the BASIC language and will run on any IBM-compatible PC with a parallel printer. A hard disc is recommended for efficient storage and retrieval of data. An example of the use of the program is cited.

Base Sequence

Rapid assessment of haemophilia A carrier state by non-invasive techniques using the polymerase chain reaction.

The polymerase chain reaction (PCR) was used to amplify two polymorphic regions in the factor VIII gene. In vitro synthesis of DNA was achieved using samples obtained from buccal cells, urine, and hair follicles in addition to purified genomic and crude DNA samples prepared from whole blood. Female members of two kindreds affected with haemophilia A were assessed for carrier state using direct restriction fragment length polymorphism analysis of amplified gene products in the Bc1I and XbaI regions. It is concluded that this is a non-invasive, rapid, and inexpensive technique for carrier detection.

Carrier State