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Biomedical subjects

A R Clarkson

Publications and source records attributed to A R Clarkson.

At least 109 records · Page 6Linked to original sources
PubMed1972

Modification by drugs of urinary fibrin/fibrinogen degradation products in glomerulonephritis.

Treatment with indomethacin, aspirin, or prednisone has been shown to reduce urinary fibrin/fibrinogen degradation products (F.D.P.) in approximately two-thirds of patients with proliferative glomerulonephritis. This reduction which is dose-dependent for prednisone but not for indomethacin or aspirin in the range of doses used occurs within two to three days of beginning treatment and is thought to result from decreased intraglomerular fibrin deposition rather than alteration of glomerular permeability to F.D.P. In patients who responded in this manner treatment was associated with reductions in the degree of proteinuria and maintenance or improvement in renal function.

Adolescent↗
PubMed1972

Menstrual blood loss and fibrin degradation products.

As part of a large-scale study of menstrual blood loss in the community serum fibrin degradation products were measured soon after menstruation in 331 women. No significant correlation was found between the amount of blood lost and the serum level of fibrin degradation products. These findings conflict with reports suggesting that excessive intrauterine fibrinolysis, which may play a part in menorrhagia, is associated with raised serum F.D.P. concentrations.

Adolescent↗
PubMed1971

Effects of poisoning on serum enzyme activities, coagulation, and fibrinolysis.

Prolonged coma due to acute overdosage with hypnotic drugs is shown to be associated with a pronounced increase in the activity of serum creatine kinase and in the concentration of fibrin degradation products and with less pronounced abnormalities of other serum enzymes and of other indices of coagulation and fibrinolysis. Evidence is presented that skeletal muscle damage occurs and that this is related to the coagulation abnormality. These findings probably explain some of the non-specific features such as fever which commonly occur in recovery from severe poisoning.

Adult↗
PubMed1971

Serum and urinary fibrin-fibrinogen degradation products in glomerulonephritis.

The serum and urine concentrations of fibrin/fibrinogen degradation products (F.D.P.) were estimated in 172 patients with glomerulonephritis. In each case the diagnosis was established on the basis of clinical, renal histological, and ultrastructural findings. Serum F.D.P. concentrations were often raised in all types of glomerulonephritis, though more consistently in active proliferative forms. The urinary concentration provided a reliable and sensitive index of activity, progression, and natural history in proliferative glomerulonephritis. In these forms the urinary F.D.P. content was thought to reflect predominantly lysis of intraglomerular fibrin deposits. In minimal lesion and membranous glomerulonephritis low but abnormal concentrations of urinary F.D.P. were consistently found. It is suggested that in these cases the products are derived from limited proteolysis of fibrinogen filtered through an abnormally permeable basement membrane.Daily measurement of urinary F.D.P. concentration is of potential value in the differential diagnosis of patients with glomerulonephritis and at the same time provides a sensitive assessment of the activity and natural history of proliferative disease.

Basement Membrane↗