Beta-adrenergic receptors on murine lymphocytes: density varies with cell maturity and lymphocyte subtype and is decreased after antigen administration

Journal Article · Fri Jul 01 00:00:00 EDT 1988 · Cell. Immunol.; (United States)

DOI:https://doi.org/10.1016/0008-8749(88)90318-8· OSTI ID:6829197

Fuchs, B A; Albright, J W; Albright, J F

beta-Adrenergic receptors were assayed on intact, viable, murine splenocytes and thymocytes using the labeled adrenergic antagonists (3H)-dihydroalprenolol l-(ring propyl-3H(N)) ((3H)DHA) and 4-(3-t-butylamino-2-hydroxypropoxy)-(5,7-3H)benzimidazol-2-one ((3H)CGP 12177). The sites detected by (3H)DHA did not always possess the characteristics of beta-adrenergic receptors and were demonstrated to be stereospecific only after the addition of the binding assay. Populations of cells from C57Bl/6 inbred and CF1 outbred mice were compared. Purified T cells from C57Bl/6 mice had fewer receptors than did either whole spleen or B cells. Thymocytes from either strain had significantly fewer receptors than did the other lymphocyte populations. However, mature medullary thymocytes purified from C57Bl/6 mice had higher numbers of receptors per cell which were comparable to those of the splenic T cell. Radiation-resistant splenocytes recovered from CF1 mice 24 hr after 700 rad of irradiation possessed greatly increased numbers of receptors per cell. Immunization with sheep red blood cells caused a significant reduction in the density of receptors on splenocytes from C57Bl/6 mice. The wide variations observed in the density of beta-adrenergic receptors, possibly related to cell maturity or state of activation, seem to provide opportunities for differential modulation of cell functions by either endogenous or exogenous adrenergic agents.

• Research Organization: Indiana State Univ., Terre Haute (USA)
• OSTI ID: 6829197
• Journal Information: Cell. Immunol.; (United States), Vol. 114:2
• Country of Publication: United States
• Language: English

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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
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RADIOASSAY
SPLEEN CELLS
RADIOSENSITIVITY
SYMPATHOMIMETICS
ANTIGENS
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GENETIC VARIABILITY
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BODY FLUIDS
CONNECTIVE TISSUE CELLS
DOMESTIC ANIMALS
DRUGS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LEUKOCYTES
MAMMALS
MATERIALS
MEMBRANE PROTEINS
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PROTEINS
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RUMINANTS
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VERTEBRATES
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