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Biomedical subjects

V Kretschmer

Publications and source records attributed to V Kretschmer.

At least 163 records · Page 9Linked to original sources
PubMed1979

[Simplification of the Papanicolaou stain which is easily reproducable (author's transl)].

A simple and well reproducable modification of the Papanicolaou stain is reported. The most important modification is the replacement of the natural stain hematoxyline by the qualitively excellent synthetic stain thionin which is immediately added to the alcoholic fixation solution for a fixation stain. The high labor intense alternation between alcohol water and alcohol is thus eliminated. The quality of the nuclear staining is very good. The fixation staining with thionin without counter-staining of the cytoplasma may be used for a rapid thionin stain which gives sufficient cytoplasmatic staining by the thionin for a rapid cytological smear for cancer. The counter-stain of the cytoplasma was also simplified. The over-all staining of this simplification of the pap smear is comparable to that of the original papanicolaou stain. This modification of the papanicolaou stain fulfills requirements which a stain in competition with the original papanicolaou stain should have. 1. The modification is qualitively equal to the original method, 2. the staining method is simpler, 3. the staining method is well reproducable, 4. the staining method is more economical.

Female↗
PubMed1978

[Current status of granulocyte separation and transfusion].

Granulocyte substitution therapy is of definitive clinical value when correctly indicated and consequently performed. Comparing the different techniques for leucocyte separation, the combination of continuous flow centrifugation (CFC) and filtration (FL) permits the highest yield of granulocytes. As yet, all available methods imply a rather high degree of inconvenience and a considerable rate of side effects for the (normal) donor which cannot easily be justified from a medical point of view. On the other hand, CFC and especially FL have a great potential for further improvement. Hence, higher yields and less donor affection are expectable. Granulocyte procurement is a great challenge to existing transfusion centres requiring their future engagement and expansion in this new and important field.

Blood Transfusion↗
PubMed1977

An improved modification of cycle filtration leucopheresis.

We report about an own modification of repetitive cycle filtration leucopheresis (RFL). Compared to the method described by De Fliedner et al. (1974) it is simpler to perform, permits the use of commercially available filtration sets and thus reduces the costs of the procedure considerably. The mean yields of the granulocytes collected in 51 RFL from unconditioned normal donors amounted from 1.7 to 2.3 X 10(10) dependent on the number of the filtration cycles performed.

Blood Donors↗
PubMed1977

Significance of complement activation in autoimmune haemolytic anaemia of "warm type".

To study possible relationships between serum C3 and C4 levels and fixation of complement components (C) on red cells, 79 patients of autoimmune haemolytic anaemia of warm type (AIHA) and 7 patients of various diseases with positive direct antiglobulintest (DAT) but without haemolysis were investigated. 23 out of 79 patients with AIHA were analyzed repeatedly during the course of the disease. There were no significant differences of C levels between the various clinical types. However, the number of patients with reduced levels of C3 and C4 was significantly higher among cases with C fixation on the red cells than among those with fixation of immunoglobulins alone. Changes were more pronounced for C4 than C3 and mean values of serum C4 were significantly lower in the group with C fixation. If incomplete warm haemolysins were demonstrable, C4 levels were lower than in cases without warm haemolysins. During the clinical course, C3 and C4 concentrations showed a close correlation to the severity of haemolysis.

Anemia, Hemolytic, Autoimmune↗
PubMed1977

[Automatic data processing for organisational aid to blood donor centers in emergency hospitals].

A test model of a computer-off-line system at the Community Hospital Blood Bank in Herford collecting approximately 3.000 units of blood annually is described. The computer system presented, now in operation for more than one year, has proven its value for general blood bank administration by its time-saving effect and the optimalized documentation of donor- and blood-related data. The computer system described is particularly recommended for smaller, hospital-based blood transfusion services. Its introduction is even justified in institutions preparing less than 5.000 units of blood per year. Prerequisite for an economical operation of the computer system is the participation of the hospital management in other computer activities, i.e. book-keeping, accounting etc.

Blood Banks↗
PubMed1977

Reappraisal of the clinical and etiologic significance of immunoglobulin deviations in autoimmune hemolytic anemia ('warm type').

56 patients with autoimmune hemolytic anemia ('warm type') (AIHA) were investigated for immunoglobulin deviations. Of these, 43 were repeatedly analyzed (mean 4 times). The mean observation time was 20 months. The immunoglobulin values were correlated with clinical (degree of hemolysis) and serological (immunoglobulin class of autoantibodies; strength of antiglobulin reaction) parameters and statistically evaluated by variance analysis. Although no significant deviations of immunoglobulins in AIHA were found as compared to a normal control group, the immunoglobulin disturbance most frequently seen was an elevation of IgM. This is interpreted as a possible lack or functional impairment of immunoregulatory T cells in AIHA.

Analysis of Variance↗
PubMed1976

[Can azur-B eosin replace the May-Grünwald-Giemsa stain?].

A new method is described for staining blood and bone marrow smears. It is characterized by the presence of only two dyes, purified azure B and eosin in methanol, as stock solutions. Staining results are equivalent to those obtained by using the traditional dye mixtures according to May and Grunwald, Giemsa, Leishman or Wright. Different from these azure B-eosin staining can be standardized and is easier to be handled. Correlations between the azure-B-eosin and May-Grunwald-Giemsa (MGG) staining methods are briefly discussed.

Blood Cell Count↗