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Biomedical subjects

M Martin

Publications and source records attributed to M Martin.

At least 937 records · Page 52Linked to original sources

[The management of corrosive oesophagitis (author's transl)].

Regardless of the treatment used against corrosive oesophagitis, the laryngologist must play a role from the beginning and throughout the course. The fibroblasts and collagen fibres which results are the natural agents of healing but, at the same time, are responsible for virtually inexorable stenosis if the corrosion has passed through to the muscular layers. Infection is constant and contributes to stenosis. The effectiveness of antibiotics is certain. They must be used from the beginning and continued for as long as necessary. As far as fibroiss is concerned, dilatations remain the basic treatment, their application requiring great experience and much patience and tenacity. Replacement surgery is attractive. It comes up against the stenosing perioesophageal inflammatory process which tends to die down in time but remains active for a long period. The nENT specialist must therefore pay careful attention from the very end of the postoperative period onwards. The gravity of oesophageal burns justifies intensification of preventive measures. Since it impossible to complete eliminate corrosive oesophagitis, efforts must be directed towards the discovery of substances capable of inhibiting collagen synthesis. Corticosteroids used in the treatment of shock do not prevent stenosis. In the laboratory, B.A.P.N. has shown its effectiveness in the rat. Also in the rat, particularly difficult experiments are in progress using penicillinamine. Although such methods have as yet to be extended to human clinical use, there are nevertheless grounds for hope.

Adrenal Cortex Hormones↗

[Determination of the molecular weight of vitellogenin and of lipovitellins of Orchestia gammarella, Crustacea, Amphipoda].

Vitellogenin and lipovitellins of Orchestia gammarella, tested by electrophoresis on gels of different acrylamide concentrations, following the procedure of Hedrick and Smith (1968), displays a migration pattern identical to that of proteins of respectively congruent to 4 x 10(5) (vitellogenin), congruent to 3,5 x 10(5) (lipovitellins I and I') and congruent to 5 x 10(5) (lipovitellin II) molecular weights.

Animals↗

Varihesive sealed dressing for indolent leg ulcers.

Forty-three patients with indolent leg ulcers that were resistant to a wide variety of treatment methods for an average period of 353 weeks, were treated by the application of sealed dressings with Varihesive (a compound of gelatin, pectin, sodium carboxymethyl-cellulose and polyisobutylene) a non-allergenic wafer which sticks to a moist surface. Varihesive dressings proved to be effective both in affording pain relief, and in allowing healing of 36 out of 43 ulcers (84%) in a mean time of 10 weeks. It is concluded that such a non-allergenic seal provides optimum conditions for reepithelialization of chronic ulcers and that Varihesive dressings are a valuable adjunct in the local treatment of skin ulceration.

Chronic Disease↗

[Treatment of iliac artery stenosis with low dose streptokinase (author's transl)].

Ten patients with 13 stenoses in the pelvic area were treated with low doses of streptokinase (30 000 U/h) for 72 hours. A significant improvement in the degree of stenosis was obtained as shown by post-stenotic pressure values. Biochemically there was a marked plasminaemia with moderately low fibrinogen levels. Streptokinase treatment with low doses could form an alternative method of treatment in arterial stenoses.

Adult↗

Complete typing of the HLA region in families. III. Analysis of responses in the primed lymphocyte test (PLT).

LCA, a rapid and efficient computer method to allocate blastogenic responses to positive and negative clusters, is described. The method involves the selection of a partition level for an ordered array of values, such that the resulting two clusters have minimal "within-cluster" variances. Individuals to whom the program assigned the same two HLA-D antigens were MLC-identical (cluster 0) in 50% of the cases. This proportion was lower for HLA-D-identical pairs that typed for Dw4 and/or Dw7, indicating that these antigens are less well defined than the rest. PLTs were less efficient than HTCs in HLA-D typing due to the induction of extra (non-HLA-D determined) responses in the higher cluster.

Computers↗

Complete HLA and Bf typing in families. I. Analysis of MLC responses and LD typing.

A triple normalization protocol for the analysis of MLC responses was evaluated using data obtained in more than 1700 triplicate reactions between the members of 17 families. The results show the method to be consistent with immunogenetic expectations. Typing responses to HTC, however, may have values identical with those of some weak one-haplotype responses and often can only be resolved by segregationanalysis.

Epitopes↗

[Plasminogen content of human fibrinogen preparations from different sources (author's transl)].

In connection with fibrinolytic therapy, it is of interest to know how much plasminogen is contained in different commercially available figrinogen preparations. This problem was investigated with the aid of a semiquantitative determination of plasminogen. The determined plasminogen content was compared with plasminogen concentration of pooled human plasma. Using the ratio of plasminogen to fibrinogen, and fixing the plasminogen content of human plasma arbitrarily at 100%, the proportion of plasminogen in fibrinogen from Immuno is 134%, fibrinogen from Behringwerke contains 13.7%, and Kabi-fibrinogen contains 2.71% plasminogen.

Fibrinogen↗

[Stability of streptokinase incubated in various solvents at different temperatures (author's transl)].

Streptokinase was dissolved in various solvents and the decay recorded. The method employed was a recently described clot lysis assay for quantitative streptokinase determination. The decrease in activity of 5 u streptokinase, 1500 u streptokinase, and 50,000 u steptokinase dissolved in one milliltre of different solvents (NaCl solution, glucose solution, laevulose solution, dextran solution (Rheomacrodex), gelatin solution (Haemaccel, starch solution (Plasmasteril,albumin solution, Michaelis buffer, heparin-glucose solution) and incubated over various periods of time (15 min, 30 min, 45 min, 60 min, 4h, 8h, 12h, 48h) was investigated. Solution media tested for streptokinase-potecting quality were broken down into three groups.-Group I: Solvents displaying excellent stabilizing properties (gelatin, albumin).-Group II: Solvents displaying medium stabilizing properties (dextran, levulose)--Group III: Solvents displaying properties (starch, NaCl, glucose, Michaelis buffer).--In testing streptokinase concentrations as used for therapeutic purpose (1500 u/ml, 50,000 u/ml), no decay was found to take place over observation periods as long as 48 h. This finding was independent of the different solvents (Group I, II or III) employed. Heparin stored with streptokinase at rooom temperature did not alter the streptokinase stability. From the clinical point of view, the choice of solvents for streptokinase infusion turned out to be of minor importance.

Albumins↗