Frequency of Lymphocytes bearing surface Membrane Immunoglobulins in Leukaemic Cattle
- 12 January 1987
- journal article
- research article
- Published by Wiley in Journal of Veterinary Medicine, Series B
- Vol. 34 (1-10) , 371-379
- https://doi.org/10.1111/j.1439-0450.1987.tb00410.x
Abstract
Summary: The percentages of surface immunoglobuline‐positive (SIg+) cells in peripheral blood lymphocyte (PBL) and lymph nodes of 20 normal cattle were compared with those in the PBL, tumourous lymph nodes and tumour tissues of 33 cases of enzootic bovine leukosis (EBL). EBL animals were classified into three groups: one showing high SIg+ cell percentages in the lymphoid organs (SIgH group), one with low percentages (SIgL group) and one with intermediate values (SIgM group). Most of the EBL animals belonged to either the SIgH or the SIgL group. The number of such animals was 13:13 for PBL, 12:14 for the tumourous lymph nodes and 14:19 for tumour tissues. The number of SIgM animals was very small. Most of the animals with SIgH or SIgL tumour tissue were classified into the same SIg group for the lymphoid organs. The SIg+ cell percentages in all the specimens were low in the SIgL group: 13.2 ± 9.1% and 6.5 ± 6.0%, respectively, in the tumour tissue, as determined by antibovine Ig and IgG sera. Of the 31 EBL animals, 21 exhibited persistent lymphocytosis. Nine of these 21 were in the SIgH group, and 11, in the SIgL group, with no special bias found. These results indicate that the tumours were composed of surface immunoglobulin‐negative cells in some EBL animals.Zusammenfassung: Häufigkeit von Lymphocyten mit Oberflächenmembran‐Immunglobulinen bei leukämischen RindernDer prozentuale Anteil Oberflächen‐Immunglobulin positiver (SIg+) Zellen an peripheren Blutlymphocyten (PBL) und Lymphknoten von 20 normalen Rindern wurde mit dem an PBL, tumorösen Lymphknoten und Tumorgewebe von 33 Fällen enzootischer boviner Leukose (EBL) verglichen. Die EBL‐Tiere wurden in drei Gruppen eingeteilt: eine mit hoher Prozentzahl SIg+‐Zellen in den lymphoiden Organen (SIgH‐Gruppe), eine mit niedriger Prozentzahl (SIgL‐Gruppe) und eine mit mittleren Werten (SIgM‐Gruppe). Die meisten der EBL‐Tiere gehörten entweder zur SIgH‐ oder zur SIgL‐Gruppe. Die Anzahl dieser Tiere betrug 13:13 für PBL, 12:14 für tumoröse Lymphknoten und 14:19 für Tumorgewebe. Die Anzahl von SIgM‐Tieren war sehr gering. Die meisten Tiere mit SIgH‐ oder SIgL‐Tumorgewebe gehörten bezüglich lymphoider Organe in die gleiche SIg‐Gruppe. Der prozentuale Anteil von SIg+‐Zellen in Tumorgeweben aller Tiere der SIgL‐Gruppe, der mittels Antiseren gegen bovines Ig und IgG bestimmt wurde, betrug nur 13,2 ± 9,1% bzw. 6,5 ± 6,0%. Von den 33 EBL‐Tieren wiesen 21 eine persistierende Lymphocytose auf. Von diesen 21 Tieren gehörten 9 zur SIgH‐ und 11 zur SIgL‐Gruppe. Diese Ergebnisse weisen darauf hin, daß die Tumoren bei einigen EBL‐Tieren aus Oberflächen‐Immunglobulin negativen Zellen gebildet wurden.Keywords
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