PMID: 205616May 1, 1978

Cyclic AMP accumulation in psoriatic skin: differential responses to histamine, AMP, and einephrine by the uninvolved and involved epidermis

The Journal of Investigative Dermatology
H IizukaV Levine

Abstract

Using the uninvolved and involved skin from psoriatic patients, we investigated the effects of histamine and AMP (or adenosine) in vitro on the intracellular cyclic AMP levels. Both agents activated adenylate cyclase of the uninvolved and involved resulting in the accumulation of cyclic AMP. Without a cyclic nucleotide phosphodiesterase (PDE) inhibitor, these responses were biphasic and the maximal accumulation was observed in 5 min. With the PDE inhibitor both responses were markedly potentiated and high levels of cyclic AMP were observed for more than 20 min. The response to histamine by the involved skin was much greater than that by the uninvolved. The degree of the response to adenosine was approximately equal. In accordance with our previous work, the response to epinephrine by the involved skin was much less than that by the uninvolved. Thus adenylate cyclases of involved skin from psoriatic patients exhibit a markedly diminished response to epinephrine while at the same time exhibiting a markedly enhanced response to histamine. This precludes the possibility that the unresponsiveness to epinephrine can be due to a generalized inability of the epidermal psoriatic plaque cell to make a functioning cell membrane.

References

Dec 1, 1978·The Journal of Dermatology·J J Voorhees
Jun 1, 1979·Clinical and Experimental Dermatology·P van de Kerkhof
Nov 1, 1982·The British Journal of Dermatology·K AdachiV Levine
Sep 1, 1983·The British Journal of Dermatology·R KumarL A Chiero
Mar 7, 2012·The Journal of Dermatological Treatment·Ting-Shun Wang, Tsen-Fang Tsai
Apr 1, 1986·The British Journal of Dermatology·S KajitaA Ohkawara
Apr 1, 1987·The Journal of Dermatology·S Kajita, H Iizuka
Jan 1, 1988·Archives of Dermatological Research·H KobayashiN Kuzumaki
Jul 1, 1982·The British Journal of Dermatology·R MarksC Y Tan
Jan 1, 2015·Heart and Vessels·Mario MastrolonardoNatale Daniele Brunetti
Jul 1, 1986·Clinical and Experimental Dermatology·H IizukaA Ohkawara
Jan 1, 1994·Archives of Dermatological Research·W H BoehnckeR Kaufmann
Jan 1, 1990·Archives of Dermatological Research·H TakahashiM Katagiri

Related Concepts

Histamine Measurement
Psoriasis
Pavatym
Phosphodiesterase Inhibitors
Adenosine
Protoplasm
Cyclic AMP
Response to Histamine
Cyclic Adenosine Monophosphate Measurement
Epinephrine Measurement

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