Immunologic Incompetence of the Neoplastic Lymphocyte in Chronic Lymphocytic Leukemia
- JEROME I. BRODY, M.D., F.A.C.P.; and
- LAWRENCE H. BEIZER, M.D., F.A.C.P.
- Requests for reprints should be addressed to Jerome I. Brody, M.D., Department of Medicine, Graduate Hospital of the University of Pennsylvania, Philadelphia, Pa. 19103.
Excerpt
The purpose of this investigation was to evaluate the immune reactivity of the neoplastic lymphocyte in chronic lymphocytic leukemia by characterizing the response of patients with this blood dyscrasia to a polyvalent Salmonella antigen. The knowledge that 19S macroglobulin antibody (γM, IgM) is synthesized in part by the normal lymphocyte and represents a major initial defense against gram-negative septicemia (1, 2) and the failure of patients with lymphoproliferative disorders to successfully withstand such infections (3) implied that the leukemic lymphocyte may have lost an important biosynthetic function.
There have been a number of difficulties associated with studying the dynamics of
This 100-word excerpt has been provided in the absence of an abstract.
Acknowledgment
The authors gratefully acknowledge the invaluable assistance of Miss Elaine Veit, Senior Technician in the Research Hematology Laboratory.
Summario in Interlingua
Le objectivo del presente studio esseva definir comparativemente le responsa immunologic de lymphocytos leucemic e normal a base del utilisation de un manifestation visibile de un reaction de antigeno e anticorpore al superficie de ille cellulas como indicator de lor capacitate de producer anticorpore. Le methodo experimental consisteva in le immunisation serial de individuos normal e de patientes con chronic leucemia lymphocytic con un antigeno polyvalente de salmonella sequite del collection periodic de lymphocytos in sanguine peripheric per centrifugation differential. Post un meticulose processo de elution, le cellulas esseva incubate con le immunogeno bacterial, e humide preparatos sub laminas coperi-objectos esseva examinate per microscopia a campo obscur e a differentia de phase. Le adherentia de bacterios al superficio de lymphocytos esseva acceptate como evidentia de un combination de antigeno e anticorpore. Le natura physicochimic del anticorpore esseva characterisate per exponer le lymphocytos a mercaptoethanol. Sub le conditiones describite, bacterios se aggregava firmemente al superficie de lymphocytos normal e poteva esser prevenite de prender iste position per mercaptoethanol, e mercaptoethanol esseva etiam capace a detachar los. Bacterios nunquam esseva incontrate al superficie de erythrocytos, lo que indica que anticorpore humoral anti salmonella esseva non simplemente adsorbite a lymphocytos normal sed esseva formate intra iste cellula. Per contrasto con isto, lymphocytos leucemic esseva remarcabilemente libere de adherentias bacterial. Iste observationes suggere que normal lymphocytos de sanguine peripheric synthetisa anticorpore 19S a sensibilitate pro mercaptoethanol contra un specific antigeno bacterial. Tamen, un facto plus importante esseva que lymphocytos neoplastic non reageva in un maniera analoge. Il es possibile que iste indolentia immunologic reflecte un basic differentia biologic inter lymphocytos normal e lymphocytos leucemic. Il es etiam possibile que nos ha hic un explication del susceptibilitate de patientes con chronic leucemia lymphocytic de cader victima a sepse gram-negative, i.e., a infectiones que require le participation protective del immunoglobulinas 19S.
Article and Author Information
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From the Department of Medicine, the Graduate Hospital and the University of Pennsylvania School of Medicine, Philadelphia, Pa.
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This study was supported in part by training grant 5 T1 5159-02 and research grant CA 07000-03, U. S. Public Health Service, Washington, D. C.
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- Received December 14, 1965.
- Accepted February 16, 1966.
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