Late withdrawal of assent by adolescents

2021 ◽  
Vol 31 (9) ◽  
pp. 921-923
Author(s):  
Tim Dare
Keyword(s):  
1996 ◽  
Vol 55 (2) ◽  
pp. 227-235 ◽  
Author(s):  
K.D. Dougherty ◽  
T.J. Walsh ◽  
S. Bailey ◽  
S. Schlussman ◽  
K. Grasing

The Lancet ◽  
1977 ◽  
Vol 310 (8050) ◽  
pp. 1230 ◽  
Author(s):  
R.E. Challis ◽  
J.W. Scopes

Author(s):  
J. David Grimes ◽  
Mohamed N. Hassan

SUMMARY:Thirty-seven patients with advanced Parkinson’s disease who initially tolerated, and responded to bromocriptine therapy were followed for 12 to 50 (mean 28) months. Using a method of gradual increase of bromocriptine, with concomitant levodopa reduction, the peak effect of the drug was apparent by three months, at which time the mean daily dose of bromocriptine was 23.9 mg and Sinemet (levodopa + carbidopa) had been reduced by 34 percent.Eight patients had sustained improvement without further drug changes for an average of 29 (range 14–50) months. After periods of improvement varying between 3 and 30 months, 29 patients had a fall-off from peak effect. Peak effect was regained in 21 of these 29 patients for an average of 16 additional months by initially increasing bromocriptine or Sinemet, or by eventually increasing both drugs. The main adverse effect was a confusional state which necessitated late withdrawal of bromocriptine in four patients. The best results were in younger patients with end-of-dose deterioration and levodopa induced dyskinesias.With cautious introduction, and intermittent dosage adjustment, bromocriptine can be of long-term benefit to patients with advanced Parkinson’s disease. The majority of patients have a gradual late fall-off in effect which can frequently be reversed with dosage adjustment.


2018 ◽  
Vol 19 (4) ◽  
Author(s):  
Marta Rogowska ◽  
Wojciech Giermaziak

Herbs have been used in traditional medicine for centuries. They were often used without restrictions, believing that they are effective and safe. They were not known for their side effects or potential interactions with other concomitant medications. Article describes influence of simultaneous usage of herbs and synthetic drugs taken in the same time regarding potential hazards, side effects and interactions. Pharmacological profile of plant substances which are often used in dietary supplements were also presented as well as impact of herb based medicines to surgery process and possible intraoperative and postoperative complications after their too late withdrawal was briefly described. The aim of the work is to remind the potential risks associated with polypharmacy and simultaneous intake of plant medicines or dietary supplements. It should also increase the alertness of pharmacists and doctors when they recommending, or patients when they taking herb preparations during pharmacotherapy.


Author(s):  
Alvin S. Chiu ◽  
Matthew C. Kang ◽  
Laura L. Huerta Sanchez ◽  
Anne M. Fabella ◽  
Kalysta N. Holder ◽  
...  

AbstractCue-elicited drug-craving is a cardinal feature of addiction that intensifies (incubates) during protracted withdrawal. In a rat model, these addiction-related behavioral pathologies are mediated, respectively, by time-dependent increases in PI3K/Akt1 signaling and reduced Group 1 metabotropic glutamate receptor (mGlu) expression, within the ventromedial prefrontal cortex (vmPFC). Herein, we examined the capacity of single oral dosing with everolimus, an FDA-approved inhibitor of the PI3K/Akt effector mTOR, to reduce incubated cocaine-craving and reverse incubation-associated changes in vmPFC kinase activity and mGlu expression. Rats were trained to lever-press for intravenous infusions of cocaine or delivery of sucrose pellets and then subjected to tests for cue-reinforced responding during early (3 days) or late (30–46 days) withdrawal. Rats were gavage-infused with everolimus (0–1.0 mg/kg), either prior to testing to examine for effects upon reinforcer-seeking behavior, or immediately following testing to probe effects upon the consolidation of extinction learning. Single oral dosing with everolimus dose-dependently blocked cocaine-seeking during late withdrawal and the effect lasted at least 24 h. No everolimus effects were observed for cue-elicited sucrose-seeking or cocaine-seeking in early withdrawal. In addition, everolimus treatment, following initial cue-testing, reduced subsequent cue hyper-responsivity exhibited observed during late withdrawal, arguing a facilitation of extinction memory consolidation. everolimus’ “anti-incubation” effect was associated with a reversal of withdrawal-induced changes in indices of PI3K/Akt1/mTOR activity, as well as Homer protein and mGlu1/5 expression, within the prelimbic (PL) subregion of the prefrontal cortex. Our results indicate mTOR inhibition as a viable strategy for interrupting heightened cocaine-craving and facilitating addiction recovery during protracted withdrawal.


2021 ◽  
Author(s):  
Alvin S. Chiu ◽  
Matthew C. Kang ◽  
Laura L. Huerta Sanchez ◽  
Anne M. Fabella ◽  
Kalysta N. Holder ◽  
...  

Abstract Cue-elicited drug-craving is a cardinal feature of addiction that intensifies (incubates) during protracted withdrawal. In a rat model, these addiction-related behavioral pathologies are mediated, respectively, by time-dependent increases in PI3K/Akt1 signaling and reduced Group 1 metabotropic glutamate receptor (mGlu) expression, within the ventromedial prefrontal cortex (vmPFC). Herein, we examined the capacity of single oral dosing with Everolimus, an FDA-approved inhibitor of the PI3K/Akt effector mTOR, to reduce incubated cocaine-craving and reverse incubation-associated changes in vmPFC kinase activity and mGlu expression. Rats were trained to lever-press for intravenous infusions of cocaine or delivery of sucrose pellets and then subjected to tests for cue-reinforced responding during early (3 days) or late (30-46 days) withdrawal. Rats were gavage-infused with Everolimus (0-1.0 mg/kg), either prior to testing to examine for effects upon reinforcer-seeking behavior, or immediately following testing to probe effects upon the consolidation of extinction learning. Single oral dosing with Everolimus dose-dependently blocked cocaine-seeking during late withdrawal and the effect lasted at least 24 h. No Everolimus effects were observed for cue-elicited sucrose-seeking or cocaine-seeking in early withdrawal. Additionally, Everolimus treatment, following initial cue-testing, reduced subsequent cue hyper-responsivity exhibited observed during late withdrawal, arguing a facilitation of extinction memory consolidation. Everolimus’ “anti-incubation” effect was associated with a reversal of withdrawal-induced changes in indices of PI3K/Akt1/mTOR activity, as well as Homer protein and mGlu1/5 expression, within the prelimbic (PL) subregion of the prefrontal cortex. Our results indicate mTOR inhibition as a viable strategy for interrupting heightened cocaine-craving and facilitating addiction recovery during protracted withdrawal.


2016 ◽  
Vol 408 (16) ◽  
pp. 4233-4245 ◽  
Author(s):  
Xing Zhang ◽  
Veronica M. Chiu ◽  
Ryan P. Todd ◽  
Barbara A. Sorg ◽  
Herbert H. Hill

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