Aging effects on elevated plus maze behavior in spontaneously hypertensive, Wistar–Kyoto and Sprague–Dawley male and female rats

2005 ◽  
Vol 85 (5) ◽  
pp. 621-628 ◽  
Author(s):  
Sherry A. Ferguson ◽  
Erika P. Gray
Keyword(s):  
Elevated Plus Maze ◽  
Female Rats ◽  
Sprague Dawley ◽  
Aging Effects ◽  
Male And Female ◽  
Spontaneously Hypertensive ◽  
Male And Female Rats ◽  
Plus Maze ◽  
Wistar Kyoto

Dietary Soy Supplements Produce Opposite Effects on Anxiety in Intact Male and Female Rats in the Elevated Plus-Maze.

2005 ◽  
Vol 119 (2) ◽  
pp. 587-594 ◽  
Author(s):  
Heather B. Patisaul ◽  
Adele Blum ◽  
Jordan R. Luskin ◽  
Mark E. Wilson
Keyword(s):  
Elevated Plus Maze ◽  
Female Rats ◽  
Intact Male ◽  
Male And Female ◽  
Male And Female Rats ◽  
Plus Maze

scholarly journals Oxycodone decreases anxiety-like behavior in the elevated plus-maze test in male and female rats

2021 ◽  
Author(s):  
Adriaan W. Bruijnzeel ◽  
Azin Behnood-Rod ◽  
Wendi Malphurs ◽  
Ranjithkumar Chellian ◽  
Robert M. Caudle ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Field Test ◽  
Elevated Plus Maze ◽  
Open Field Test ◽  
Female Rats ◽  
Male And Female ◽  
Elevated Plus Maze Test ◽  
Maze Test ◽  
Male And Female Rats ◽  
Plus Maze

AbstractThe prescription opioid oxycodone is widely used for the treatment of pain in humans. Oxycodone misuse is more common among people with an anxiety disorder than those without one. Therefore, oxycodone might be misused for its anxiolytic properties. We investigated if oxycodone affects anxiety-like behavior in adult male and female rats. The rats were treated with oxycodone (0.178, 0.32, 0.56, or 1 mg/kg), and anxiety-like behavior was investigated in the elevated plus-maze test. Immediately after the elevated plus-maze test, a small open field test was conducted to determine the effects of oxycodone on locomotor activity. In the elevated plus-maze test, oxycodone increased the percentage of time spent on the open arms, the percentage of open arm entries, time on the open arms, open arm entries, and the distance traveled. The males treated with vehicle had a lower percentage of open arm entries than the females treated with vehicle, and oxycodone treatment led to a greater increase in the percentage of open arm entries in the males than females. Furthermore, the females spent more time on the open arms, made more open arm entries, spent less time in the closed arms, and traveled a greater distance than the males. In the small open field test, treatment with oxycodone did not affect locomotor activity or rearing. Sex differences were observed; the females traveled a greater distance and displayed more rearing than the males. In conclusion, oxycodone decreases anxiety-like behavior in rats, and oxycodone has a greater anxiolytic-like effect in males than females.

scholarly journals Toxicity Evaluation of a Traditional Polyherbal Unani Formulation Jawarish Shahi in Rats

2018 ◽  
Vol 7 (5) ◽  
pp. 412-418
Author(s):  
Mohd Urooj ◽  
◽  
Mohammad Ahmed Khan ◽  
G. Thejaswini ◽  
Munawwar Husain Kazmi ◽  
...  
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Clinical Signs ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Male And Female ◽  
Salix Caprea ◽  
Male And Female Rats ◽  
Dose Levels

Jawarish Shahi (JS) is a compound polyherbal Unani pharmacopoeial formulation indicated for Khafqan (Palpitation), Nafkh-e-Shikam (Flatulence) and Waswas (Insanity; false perception and hallucinations). Jawarish Shahi contains herbs like Halela (Terminalia chebula), Amla (Emblica officinalis), Kishneez (Coriandrum sativum), Elaichi Khurd, (Elettaria cardamomum), and Bed Mushk (Salix caprea). The present study was carried out as per OECD 408 guidance to evaluate 90 days repeated oral dose toxicity in male and female Sprague Dawley rats. The study was performed at dose levels 1028 and 2000 mg/kg bw. No adverse effects were reported with respect to body weight, feed intake, behavior and clinical signs indicative of systemic toxicity. The expected growth pattern was observed in body weight and feed intake as compared to control group at both dose levels in male and female rats. There were few significant alterations with respect to hematology, and clinical biochemistry, however the results were within normal range thus considered toxicologically insignificant. The microscopic examination of different organ/tissue showed that no histopathological changes were observed. The findings of the study showed that No Observed Adverse Effect Level (NOAEL) for JS is greater than 2000 mg/kg body weight

scholarly journals Social isolation rearing-induced anxiety and response to agomelatine in male and female rats: Role of corticosterone, oxytocin, and vasopressin

2019 ◽  
Vol 33 (5) ◽  
pp. 640-646 ◽  
Author(s):  
Brian H Harvey ◽  
Wilmie Regenass ◽  
Walter Dreyer ◽  
Marisa Möller
Keyword(s):  
Social Isolation ◽  
Female Rats ◽  
Male Rats ◽  
Isolation Rearing ◽  
Male And Female ◽  
Plasma Vasopressin ◽  
Male And Female Rats ◽  
Plus Maze ◽  
Circadian Fluctuation ◽  
Social Isolation Rearing

Background: The chronobiotic antidepressant, agomelatine, acts via re-entrainment of circadian rhythms. Earlier work has demonstrated late-life anxiety and reduced corticosterone in post-weaning social isolation reared (SIR) rats. Agomelatine was anxiolytic in this model but did not reverse hypocortisolemia. Reduced corticosterone or cortisol (in humans) is well-described in anxiety states, although the anxiolytic-like actions of agomelatine may involve targeting another mechanism. Central oxytocin and vasopressin exert anxiolytic and anxiogenic effects, respectively, and are subject to circadian fluctuation, while also showing sex-dependent differences in response to various challenges. Aims and methods: If corticosterone is less involved in the anxiolytic-like actions of agomelatine in SIR rats, we wondered whether effects on vasopressin and oxytocin may mediate these actions, and whether sex-dependent effects are evident. Anxiety as assessed in the elevated plus maze, as well as plasma vasopressin, oxytocin, and corticosterone were analyzed in social vs SIR animals receiving sub-chronic treatment with vehicle or agomelatine (40 mg/kg/day intraperitoneally at 16:00) for 16 days. Results: Social isolation rearing induced significant anxiety together with increased plasma vasopressin levels, but decreased corticosterone and oxytocin. While corticosterone displayed sex-dependent changes, vasopressin, and oxytocin changes were independent of sex. Agomelatine suppressed anxiety as well as reversed elevated vasopressin in both male and female rats and partially reversed reduced oxytocin in female but not male rats. Conclusion: SIR-associated anxiety later in life involves reduced corticosterone and oxytocin, and elevated vasopressin. The anxiolytic-like effects of agomelatine in SIR rats predominantly involve targeting of elevated vasopressin.

scholarly journals Absorption, Distribution, Excretion, and Pharmacokinetics ofC-Pyronaridine Tetraphosphate in Male and Female Sprague-Dawley Rats

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Sang Hyun Park ◽  
Kannampalli Pradeep
Keyword(s):  
Clinical Trials ◽  
Small Intestine ◽  
Oral Administration ◽  
Female Rats ◽  
Sprague Dawley ◽  
Male And Female ◽  
Phase Ii Clinical Trials ◽  
Male And Female Rats ◽  
Sprague Dawley Rats ◽  
Peak Value

The main objective of this investigation was to determine the absorption, distribution, excretion, and pharmacokinetics of the antimalarial drug pyronaridine tetraphosphate (PNDP) in Sprague-Dawley rats. Following oral administration of a single dose (10 mg/Kg) ofC-PNDP, it was observed that the drug was readily absorbed from the small intestine within 1 hour following oral administration and was widely distributed in most of the tissues investigated as determined from the observed radioactivity in the tissues. The peak value of the drug in the blood was reached at around 8 hours postadministration, and radioactivity was detected in most of the tissues from 4 hours onwards.C-PNDP showed a poor permeability across the blood-brain barrier, and the absorption, distribution, and excretion ofC-PNDP were found to be gender-independent as both male and female rats showed a similar pattern of radioactivity. Excretion of the drug was predominantly through the urine with a peak excretion post 24 hours of administration. A small amount of the drug was also excreted in the feces and also in the breath. It was found that theCmax, AUC (0-inf), andTmaxvalues were similar to those observed in the Phase II clinical trials of pyronaridine/artesunate (Pyramax) conducted in Uganda.

scholarly journals Blockade of beta adrenergic receptors protects the blood brain barrier and reduces systemic pathology caused by HIV-1 Nef protein

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259446
Author(s):  
Jocelyn Rivera-Ortiz ◽  
Jessalyn Pla-Tenorio ◽  
Myrella L. Cruz ◽  
Krystal Colon ◽  
Jaileene Perez-Morales ◽  
...  
Keyword(s):  
Small Intestine ◽  
Female Rats ◽  
Sprague Dawley ◽  
Beta Adrenergic ◽  
Male And Female ◽  
Blood Brain ◽  
Male And Female Rats ◽  
Junction Protein ◽  
Systemic Pathology ◽  
Hiv 1

Combination antiretroviral therapy (cART) targets viral replication, but early viral protein production by astrocytes may still occur and contribute to the progression of HIV-1 associated neurocognitive disorders and secondary complications seen in patients receiving cART. In prior work with our model, astrocytic HIV-1 Nef expression exhibits neurotoxic effects leading to neurological damage, learning impairment, and immune upregulation that induces inflammation in the lungs and small intestine (SI). In this follow-up study, we focus on the sympathetic nervous system (SNS) as the important branch for peripheral inflammation resulting from astrocytic Nef expression. Male and female Sprague Dawley rats were infused with transfected astrocytes to produce Nef. The rats were divided in four groups: Nef, Nef + propranolol, propranolol and naïve. The beta-adrenergic blocker, propranolol, was administered for 3 consecutive days, starting one day prior to surgery. Two days after the surgery, the rats were sacrificed, and then blood, brain, small intestine (SI), and lung tissues were collected. Levels of IL-1β were higher in both male and female rats, and treatment with propranolol restored IL-1β to basal levels. We observed that Nef expression decreased staining of the tight junction protein claudin-5 in brain tissue while animals co-treated with propranolol restored claudin-5 expression. Lungs and SI of rats in the Nef group showed histological signs of damage including larger Peyer’s Patches, increased tissue thickness, and infiltration of immune cells; these findings were abrogated by propranolol co-treatment. Results suggest that interruption of the beta adrenergic signaling reduces the peripheral organ inflammation caused after Nef expression in astrocytes of the brain.

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