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Administration of venlafaxine after chronic methadone detoxification blocks post-depression relapse in rats BABT
Fadaei-Kenarsary,Meysam; Moghaddam,Hadi Fathi; Mansouri,Seyyed Mohammad Taghi; Farbood,Yaghoob.
ABSTRACT Relapse is highly prevalent after detoxification and depression. Due to the advantages of venlafaxine compared with other antidepressants, it is expected that venlafaxine administration may reduce relapse after detoxification and depression. This study aimed to evaluate the effects of venlafaxine on depression-induced relapse to morphine dependence after methadone detoxification. Eighty Sprague-Dawley rats were habituated and conditioned with morphine (10 mg/kg, S.C., for 4 days). After that, primary forced swimming and conditioned place preference (CPP) were tested. They were followed by methadone (70 mg/kg/day, P.O., for 7 days) administration, extinguishing, forced swimming stress (FSS) and administration of venlafaxine (80 mg/kg/day, I.P., for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morphine; Methadone; Depression; Relapse; Venlafaxine; Rat.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100311
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Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy BJMBR
da-Silva,V.A.; Altenburg,S.P.; Malheiros,L.R.; Thomaz,T.G.; Lindsey,C.J..
The aim of the present study was to compare the toxic effects of fluoxetine (F) (8 and 16 mg/kg) and venlafaxine (V) (40 and 80 mg/kg) administered during the third week of pregnancy on early development of rats. Both antidepressants were administered by gavage on pregnancy days 15 to 20 to groups of 10 to 12 animals each. Duration of gestation, food and water consumption, number of live pups and birth weight were recorded. Litters were culled to six pups at birth (day 1) and followed for growth until weaning (day 25). On day 60, a male and a female from each litter were injected with the 5-HT1 agonist, 5-methoxy-N,N-dimethyltryptamine (6 mg/kg, ip) and the serotonergic syndrome was graded. Fluoxetine but not venlafaxine reduced the duration of pregnancy...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Development; Fluoxetine; Venlafaxine; Rats.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000100014
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Proconvulsant effects of high doses of venlafaxine in pentylenetetrazole-convulsive rats BJMBR
Santos Junior,J.G.; Do Monte,F.H.M.; Russi,M.; Agustine,P.E.; Lanziotti,V.M.N.B..
Venlafaxine, an atypical antidepressant drug, has been used to treat several neurological disorders, presenting excellent efficacy and tolerability. Clinical seizures after venlafaxine treatment have occasionally been reported when the drug was used at very high doses or in combination with other medications. The aim of the present study was to investigate the convulsant effects of venlafaxine in rats under controlled laboratory conditions. Adult male Wistar rats (8 per group) receiving venlafaxine or saline at the doses of 25-150 mg/kg were subjected 30 min later to injections of pentylenetetrazole at the dose of 60 mg/kg. The animals receiving 75, 100 and 150 mg/kg venlafaxine presented increased severity of convulsion when compared to controls (P =...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Antidepressant; Venlafaxine; Convulsion; Epilepsy; Pentylenetetrazole.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000400010
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Development and validation of an HPLC-UV method for accelerated stability study and pharmacokinetic analysis of venlafaxine BJPS
Sher,Muhammad; Ahmad,Maria; Hassan,Faiza; Naeem-ul-Hassan,Muhammad; Hussain,Muhammad Ajaz.
A reverse phase high performance liquid chromatography method has been developed and validated for accelerated stability study and determination of pharmacokinetic parameters of venlafaxine HCl. The chromatographic separation was carried out using ODS analytical column (250 × 4.6 mm i.d., 5 µm particle size). The mobile phase included acetonitrile, methanol and potassium dihydrogen phosphate buffer (30:30:40; pH 6.1) at a flow rate 1.5 mL min−1. UV-Visible detector was used at wavelength of 227 nm to monitor elutions. Retention time observed was 2.745 min. The method was validated for linearity, accuracy, precision, sensitivity and robustness. Accelerated stability study of venlafaxine HCl capsules was carried out at 40 and 50 ºC under 75% RH level....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Venlafaxine; HPLC; Stability; Pharmacokinetics; Chromatography.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100514
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