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PubMed · 9366979

GHB: a home brew.

V R Sanguineti·A Angelo·M R Frank
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Abstract

Gamma-hydroxybutyric acid is an allegedly benign illicit substance that is gaining increasing recognition and attention among substance abusers and athletes. Alongside foreign-made brands, the compound is also easily available, at low cost because of the facility with which it can be produced in one's kitchen. Named by some "Nature's Quaalude" or sold as a health product, it is often used with a false sense of security as it may cause serious and disabling complications, as illustrated by this clinical vignette.

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Anesthetics, IntravenousAntipsychotic AgentsHallucinationsHaloperidolHospitalizationHumansIllicit DrugsMaleMiddle AgedPsychoses, Substance-InducedSodium OxybateCase ReportsJournal Article

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V R Sanguineti, A Angelo, M R Frank. 1997. GHB: a home brew.. https://doi.org/10.3109/00952999709016901

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Thin-fiber mechanoreceptors reflexly increase renal sympathetic nerve activity during static contraction.

The renal vasoconstriction induced by the sympathetic outflow during exercise serves to direct blood flow from the kidney toward the exercising muscles. The renal circulation seems to be particularly important in this regard, because it receives a substantial part of the cardiac output, which in resting humans has been estimated to be 20%. The role of group III mechanoreceptors in causing the reflex renal sympathetic response to static contraction remains an open question. To shed some light on this question, we recorded the renal sympathetic nerve responses to static contraction before and after injection of gadolinium into the arterial supply of the statically contracting triceps surae muscles of decerebrate unanesthetized and chloralose-anesthetized cats. Gadolinium has been shown to be a selective blocker of mechanogated channels in thin-fiber muscle afferents, which comprise the afferent arm of the exercise pressor reflex arc. In decerebrate (n = 15) and chloralose-anesthetized (n = 12) cats, we found that gadolinium (10 mM; 1 ml) significantly attenuated the renal sympathetic nerve and pressor responses to static contraction (60 s) after a latent period of 60 min; both responses recovered after a latent period of 120 min. We conclude that thin-fiber mechanoreceptors supplying contracting muscle are involved in some of the renal vasoconstriction evoked by the exercise pressor reflex.

Anesthetics, Intravenous↗