Prostacyclin and thromboxane A2 formation by atherosclerotic carotid artery: comparison with normal aorta, saphenous vein, and platelets.


:Prostacyclin (PGI2) and thromboxane A2 (TxA2) formation by whole-tissue segments of nine carotid endarterectomy specimens (CES), five normal aortic specimens (NAS), six saphenous vein specimens (SVS), and four platelet samples were determined by incubation with 10 mumol/L 1-14C-radiolabeled prostaglandin endoperoxide H2 (PGH2), and in other experiments with and without 10 mumol/L of CGS 13080, a TxA2 synthase inhibitor. PGI2 formation (expressed as picomoles 6-keto-PGF1 alpha/2-min incubation per sample) by nonatheromatous proximal intima of CES (307 +/- 23, mean +/- standard error) and distal intima of CES (260 +/- 22) was not statistically different; however, it was greater than atheromatous transitional plaque (159 +/- 13 pmol) (p less than 0.01) and ulceration regions (140 +/- 15 pmol) (p less than 0.01) of CES, NAS (204 +/- 16 pmol) (p less than 0.01), and SVS (165 +/- 9 pmol) (p less than 0.01). TxA2 formation (expressed as picomoles TxB2/2-min incubation per sample) by CES ulceration (51 +/- 2 pmol) was low but greater than proximal (17 +/- 2 pmol) (p less than 0.01), distal (19 +/- 3 pmol) (p less than 0.01), and transitional (23 +/- 3 pmol) (p less than 0.01) regions. TxA2 formation by NAS and SVS was not detected (less than 10 pmol). CGS 13080 inhibited TxA2 formation by CES below the limits of detection. Incubation of 1.9 x 10(5) intact platelets with 10 mumol/L of PGH2 formed a quantity of TxA2 equal to that of CES ulceration.(ABSTRACT TRUNCATED AT 250 WORDS)


J Vasc Surg


Akers DL,Kerstein MD,Rush DS,Bellan JA,Haynes DF,Kadowitz PJ,McNamara DB


Has Abstract


1988-10-01 00:00:00














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    journal_title:Journal of vascular surgery



    authors: Soler RJ,Fabre D,Watkins AC,Fadel E,Mercier O,Haulon S

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    journal_title:Journal of vascular surgery

    pub_type: 杂志文章


    authors: Yamaki T,Nozaki M,Sakurai H,Takeuchi M,Soejima K,Kono T

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  • Peptide inhibition of neointimal hyperplasia in vein grafts.

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    journal_title:Journal of vascular surgery

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    authors: Calcagno D,Conte JV,Howell MH,Foegh ML

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    authors: Leotta DF,Paun M,Beach KW,Kohler TR,Zierler RE,Strandness DE Jr

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    journal_title:Journal of vascular surgery

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    authors: Burke PE,Harvey CF,Phythian CL,Gervin CA,Greenfield LJ

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    journal_title:Journal of vascular surgery

    pub_type: 临床试验,杂志文章,随机对照试验


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    pub_type: 杂志文章


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    authors: Allen BT,Long JA,Clark RE,Sicard GA,Hopkins KT,Welch MJ

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