1981
DOI: 10.1136/jnnp.44.9.786
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Platelet monoamine oxidase activity and headache.

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Cited by 44 publications
(38 citation statements)
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“…Our finding of a lower activity of platelet phenol sulphotransferase P in susceptible subjects [10] has been confirmed by Launay et al [11], whereas platelet monoamine oxidase is not lower in diet-sensitive patients [12]. Littlewood et al [13] demonstrated an inhibition of phenol sulphotransferase in vitro by red wine, consistent with the consumption in vivo of a single glass.…”
Section: Red Wine Sensitivitysupporting
confidence: 77%
See 1 more Smart Citation
“…Our finding of a lower activity of platelet phenol sulphotransferase P in susceptible subjects [10] has been confirmed by Launay et al [11], whereas platelet monoamine oxidase is not lower in diet-sensitive patients [12]. Littlewood et al [13] demonstrated an inhibition of phenol sulphotransferase in vitro by red wine, consistent with the consumption in vivo of a single glass.…”
Section: Red Wine Sensitivitysupporting
confidence: 77%
“…Two pa- a Assuming a molecular weight of wine extract equal to 660 [38] tients did not develop a headache on either occasion, two patients developed a moderate headache on one occasion and none on the other, one of them after mepyramine and the other after placebo, and two further patients developed a headache on both occasions, which was worse after placebo in one and after mepyramine in the other (Table 2). By analogy with the studies of platelet monoamine oxidase undertaken by Glover et al [12], we also speculated that histamine metabolism might be impaired in the red-wine-sensitive patients. Dietary histamine is largely metabolised by diamine oxidase (DAO) in the gut wall, and traces of this can be assayed within the plasma, correlating reasonably with gut levels in experimental animals [31].…”
Section: Histamine Experimentsmentioning
confidence: 99%
“…Several investigators have reported a 20-40% decrease in platelet MAOB activity in subjects with migraine headaches [3,4,22,41,44,49], as well as decreases in MAOB activity during the course of an acute episode [16,44]. Such findings, however, remain controversial with some authors reporting decreases only in a subpopulation of migraine patients [15], and others reporting 'increases' [9] or 'no change' [35,46]. Differences may relate to factors including cigarette smoking [10,49] and hormonal status [9,47] that independently affect MAO levels and have not been accounted for in most studies.…”
Section: Discussionmentioning
confidence: 81%
“…For platelet monoamine oxidase determinations, 10 ml venous blood samples were collected in polypropylene test tubes containing 0.5 ml of 50 g/1 Na 2 EDTA. For platelet isolation, Corash's platelet isolation method modified by Glover et al (19) was applied. The sample was centrifuged at 3 20 g for 10 min and the platelet-rich plasma withdrawn and re-centrifuged at 2500 g for 15 min.…”
Section: Assaymentioning
confidence: 99%
“…There are two types of monoamine oxidase, one being a FAD containing enzyme (intracellular) located in the outer membrane of the mitochondria of many tissues such as platelets (8)(9)(10)(11)(12) and the other, a Cu 2+ and pyridoxal phosphate containing enzyme found in serum (13). It has been suggested that while tissue and serum monoamine oxidase activities manifest abnormal alterations in various disease states (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26), physiological fluctuations may also be detected in normals (8,(27)(28)(29)(30). The objective of this study has been to investigate the sex and age related fluctuations of platelet and serum monoamine oxidase in healthy volunteers.…”
Section: Introductionmentioning
confidence: 99%