On the chlorenium source in the asymmetric chlorolactonization reaction.

N-Acylated N-chlorohydantoins are shown to be competent chlorenium sources in the (DHQD)(2)PHAL-mediated asymmetric chlorolactonization. The derivatives demonstrate the exact role of the N1 and N3 chlorine atoms in the parent dichlorohydantoins with the N1 chlorine serving as an inductive activator and the N3 chlorine being delivered to the substrate. The putative associated catalyst/chlorine source complex was experimentally demonstrated through a series of matched/mismatched experiments employing chiral N-chlorinated hydantoins.

The short-term impact of generic versus individualized environmental supports on functional outcomes and target behaviors in schizophrenia.

We examined the short-term efficacy of two treatments using environmental supports (e.g. signs, alarms, pill containers, and checklists) to improve target behaviors in individuals with schizophrenia.

Use of environmental supports among patients with schizophrenia.

Objective: Cognitive adaptation training is a psychosocial treatment that uses individually tailored environmental supports, such as signs, calendars, hygiene supplies, and pill containers, to cue and sequence adaptive behavior in the client's home environment. Generic environmental supports offer a less costly treatment that provides a predetermined package of helpful supports to clients at the time of their routine clinic visit. Previous studies have demonstrated the efficacy of cognitive adaptation training.

Possible involvement of neuronal nitric oxide synthase enzyme in early-phase isoflurane-induced hypotension in rats.

This study was conducted to demonstrate the involvement of nitric oxide synthase (NOS) in the early-phase isoflurane-induced hypotension and to ascertain whether this NOS is neuronal NOS (nNOS) or endothelial NOS (eNOS). Mean arterial pressures (MAPs) were directly measured from the femoral arteries of urethane-anesthetized rats. Isoflurane-induced changes in MAP were monitored in rats following pretreatment with vehicle or one of the following NOS inhibitors: L-NG)monomethyl-L-arginine (L-NMMA), which is non-selective; L-NG)nitro arginine (L-NOARG), which is more selective for nNOS and eNOS; and 7-nitroindazole (7-NI), which is selective for nNOS.

An opioid basis for early-phase isoflurane-induced hypotension in rats.

This study was conducted to more clearly delineate the possible role of endogenous opioid receptors and opioid peptides in general anesthesia-associated hypotension in rats. Exposure to 2% isoflurane in oxygen produced a triphasic change in mean arterial pressure (MAP), including an early phase in which MAP fell by -28.4 +/- 2.