N.sup.6 -(hydrazinoiminomethyl)lysine and method of inhibiting n

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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435106, 43524031, 514565, C07C24100

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051324539

ABSTRACT:
Physiologically active N.sup.6 -(hydrazinoiminomethyl)lysine or pharmaceutically acceptable acid addition salt thereof is administered in a nitric oxide sythesis inhibiting amount to a subject in need of such inhibition (e.g., a subject with low blood pressure, e.g., due to sepsis or to therapeutic administration of cytokines, or needing immunosuppressive effect) or is added to a medium containing isolated organs, intact cells, cell homogenates or tissue homogenates in an amount sufficient to inhibit nitric oxide formation to elucide or control the biosynthesis, metabolism or physiological role of nitric oxide. Compared to known nitric oxide synthesis inhibitors, N.sup.6 -(hydrazinoiminomethyl)lysine and its acid addition salts show a greater relative activity toward inducible isoform of nitric oxide synthase than toward constitutive isoform of nitric oxide synthase. N.sup.6 -(hydrazinoiminomethyl)lysine and its pharmaceutically acceptable acid addition salts are substantially less toxic than are N.sup.G -amionoarginine and its pharmaceutically acceptable acid addition salts.

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