Alnaqeeb MA Ali M Thomson M Khater SH Gomes SA al-Hassan JM

Histopathological evidence of protective action of garlic against collagen and arachidonic acid toxicity in rabbits.

In: Prostaglandins Leukot Essent Fatty Acids (1992 Aug) 46(4):301-6

Amagase H Milner JA

Impact of various sources of garlic and their constituents on 7, 12- dimethylbenz[a]anthracene binding to mammary cell DNA.

In: Carcinogenesis (1993 Aug) 14(8):1627-31

Amagase H Milner JA

Impact of dietary lipids on the ability of garlic to inhibit 7, 12- dimethylbenz(a)anthracene (DMBA) binding to mammary DNA

In: FASEB J (1993) 7(3):A69

Apitz-Castro R Badimon JJ Badimon L

Effect of ajoene, the major antiplatelet compound from garlic, on platelet thrombus formation.< P> In: Thromb Res (1992 Oct 15) 68(2):145-55

Apitz-Castro R Cabrera S Cruz MR Ledezma E Jain MK: Effects of garlic extract and of three pure components isolated from it on human platelet aggregation, arachidonate metabolism, release reaction and platelet ultrastructure.

THROMB RES 1983 Oct 15; 32(2):155-69

We studied the effect of the methanol extract of garlic bulbs (EOG) and of three pure components isolated from it (F1, F2, F3), on human platelet aggregation induced by ADP, epinephrine, collagen, thrombin, arachidonate, PAF, and the ionophore A-23187. Incubation of PRP with EOG, either in methanol or in homologous PPP, inhibits platelet aggregation induced by all of the above mentioned agonists. F1, F2, and F3 also inhibit platelet aggregation, however, F3 was about four times more potent. Addition of EOG or F3 to platelets that have already been irreversibly aggregated by 10 microM ADP, induces rapid deaggregation. Inhibition of aggregation was still present after three hours. The inhibitory effect persisted even after the treated platelets were Gel-Filtered (GFP) or separated from plasma through a metrizamide gradient and resuspended in new homologous PPP. Thrombin- induced release of ATP from GFP was inhibited by 75-80% after EOG or F3 treatment. Incorporation of [3-H]-arachidonate by intact platelets was decreased by 50-60% in treated platelets. However, platelets incubated with the inhibitors after incorporation of radiolabeled arachidonate, although did not aggregate, produced, after thrombin activation similar amounts of radiolabeled TXB2 and lipoxygenase products as the controls. Electron microscopy of inhibited platelets, in the presence of thrombin, showed no degranulation but an increase of spherical forms. Our results suggest that the effects described might be mediate by a perturbation of the physicochemical properties of the plasma membrane rather than by affecting arachidonate or calcium metabolism in the cells. Chemical structures of F1, F2 and F3 have been provisionally assigned: F1 is diallytrisulfide, F2 is 2- vinyl-1, 3-dithiene, and F3 is most probably allyl 1, 5-hexadienyltrisulfide.

Ariga:

Platelet aggregation inhibitor in garlic.

LANCET (1981 Jan 17) 1(8212):150-1

Aro A

[Garlic--a spice or a medicine? (editorial)]

Valkosipuli--mauste vai laake?

In: Duodecim (1992) 108(21):1839-41

Artacho MR Ruiz MD Olea F Olea N