scholarly journals Nicotine and Kainic Acid Effects on Cortical Epileptic Afterdischarges in Immature Rats

2012 ◽  
pp. 537-542
Author(s):  
V. RILJAK ◽  
D. MAREŠOVÁ ◽  
K. JANDOVÁ ◽  
J. POKORNÝ
Keyword(s):  
Kainic Acid ◽  
Age Groups ◽  
Treated Group ◽  
Albino Rats ◽  
Minor Role ◽  
Single Treatment ◽  
Immature Rats ◽  
Wistar Albino Rats ◽  
Epileptic Afterdischarges ◽  
Experimental Group

Aim of the study was to test the effect of nicotine (NIC) and kainic acid (KA) co-treatment in immature rats. Male Wistar albino rats (two different age groups) were chosen for the study. Experiments started on postnatal day (PD) 8 or 21 and animals were treated twice a day for three days with nicotine, fourth day KA was administered. Animals at PD12 (PD25 respectively) were examined electrophysiologically for cortical epileptic afterdischarges (ADs). First cortical ADs in PD12 animals were longer, when compared to PD25 rats (group treated with both substances). Nor NIC or KA treatment affected the length of discharges in PD12 rats. Older experimental group exhibited the shortening of the first ADs (group treated with NIC and KA, compared with groups exposed to single treatment). Few changes were found in KA treated group – 2nd and 4th ADs were shorter when compared with first ADs. These results demonstrate that NIC treatment played minor role in seizure susceptibility of PD12 rats, sensitivity to NIC differs during ontogenesis and subconvulsive dose of KA influenced the length of discharges only in PD25 animals.

scholarly journals Effect of Ashwagandha (Withania Somnifera) Root Extract Against Gentamicin Induced Changes of Serum Urea and Creatinine Levels in Rats

1970 ◽  
Vol 6 (2) ◽  
pp. 84-89 ◽  
Author(s):  
Sadia Choudhury Shimmi ◽  
Nasim Jahan ◽  
Nayma Sultana
Keyword(s):  
Body Weight ◽  
Withania Somnifera ◽  
Treated Group ◽  
Control Group ◽  
Albino Rats ◽  
Root Extract ◽  
Serum Urea ◽  
Wistar Albino Rats ◽  
Group B ◽  
Experimental Group

Background: Kidney is an important excretory organ. Its damage can be occurred due to prolonged use and higher doses of drugs, exposure to some chemicals, toxins, or infectious agents. Herbal plants as Ashwagandha (Withania somnifera) may have free radical scavenging activity thereby can be used for the prevention and treatment of kidney damage. Objective: To observe the nephroprotective effect of Ashwagandha (Withania somnifera) root against gentamicin induced nephrotoxicity in Wistar albino rats. Methods: This experimental study was carried out in the Department of Physiology, Sir Salimullah Medical College (SSMC), Dhaka from 1st July 2010 to 30th June 2011. A total number of 35 Wistar albino rats, age ranged from 90 to 120 days, weighing between 150 to 200 grams were included in this study. After acclimatization for 14 days, they were divided into control group (Group A) and experimental group (Group B). Control group was again subdivided into group A1 (baseline control, consisted of 10 rats) and group A2 (gentamicin treated control group, consisted of 10 rats). Again, experimental group (Group B- Ashwagandha pretreated and gentamicin treated group) consisted of 15 rats. All groups of animals received basal diet for 22 consecutive days. In addition to this, group A2 also received gentamicin subcutaneously (100mg /kg body weight/day) for the last eight (15th to 22nd day) consecutive days. Again, group B received ashwagandha root extract (500mg/kg body weight/ day; orally) for 22 consecutive days and gentamicin subcutaneously (100mg/kg body weight /day) for last eight (15th to 22nd day) days. All the animals were sacrificed on 23rd day. Then blood and kidney sample were collected. Estimation of serum urea, creatinine levels were done by using standard Laboratory kits. The statistical analysis was done by one way ANOVA and Bonferroni test as applicable. Results: The mean serum urea, creatinine levels were significantly (p<0.001) higher in gentamicin treated control group in comparison to those of baseline control. Again, these levels were significantly (p<0.01) lower in ashwagandha pretreated and gentamicin treated group (experimental group) when compared to those of gentamicin treated group (control). Conclusion: Ashwagandha (Withania somnifera) root may have some nephroprotective effect against gentamicin induced nephrotoxicity. DOI: http://dx.doi.org/10.3329/jbsp.v6i2.9756 JBSP 2011 6(2): 84-89

Effect of unilateral nasal obstruction on tongue protrusion forces in growing rats

2015 ◽  
Vol 118 (9) ◽  
pp. 1128-1135 ◽  
Author(s):  
Karin Harumi Uchima Koecklin ◽  
Chiho Kato ◽  
Yukiha Funaki ◽  
Maya Hiranuma ◽  
Takayoshi Ishida ◽  
...  
Keyword(s):  
Nasal Obstruction ◽  
Decay Time ◽  
Repeated Measures ◽  
Normal Growth ◽  
Albino Rats ◽  
Fatigue Index ◽  
Contraction Force ◽  
Pharyngeal Airway ◽  
Wistar Albino Rats ◽  
Experimental Group

Mouth breathing caused by nasal obstruction affects the normal growth and development of craniofacial structures, including changes in the orofacial muscles. Tongue muscles play an important role in patency of the pharyngeal airway, and changes in the breathing pattern may influence tongue function. The purpose of this study was to evaluate the effect of unilateral nasal obstruction during growth on contractile properties of the tongue-protruding muscles. Sixty 6-day-old male Wistar albino rats were divided randomly into control ( n = 30) and experimental ( n = 30) groups. Rats in the experimental group underwent a unilateral nasal obstruction after cauterization of the external nostril at the age of 8 days, and muscle contractile characteristics were measured at 5, 7, and 9 wk of age. The specific parameters measured were twitch force, contraction time, half-decay time, tetanic force, and fatigue index. Repeated-measures multivariate analysis of variance was used for intergroup and intragroup statistical comparisons. Twitch contraction force and half-decay time were significantly increased in the experimental group at all ages. Tetanic forces at 60 and 80 Hz were significantly higher in the experimental group at all ages. The fatigue index was decreased significantly in the experimental group at the age of 5 wk. These results suggest that early unilateral nasal obstruction may increase the contraction force of the tongue-protruding muscles and prolong the duration of muscle contraction, which may influence the shape and development of the craniofacial complex.

scholarly journals Protective Effect of Ethanolic Extract ofTabernaemontana divaricata(L.) R. Br. against DEN and Fe NTA Induced Liver Necrosis in Wistar Albino Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Kannappan Poornima ◽  
Palanisamy Chella Perumal ◽  
Velliyur Kanniappan Gopalakrishnan
Keyword(s):  
Ethanolic Extract ◽  
Treated Group ◽  
Hepatic Necrosis ◽  
Hepatoprotective Activity ◽  
Albino Rats ◽  
Protective Effects ◽  
Liver Necrosis ◽  
Standard Drug ◽  
Tabernaemontana Divaricata ◽  
Wistar Albino Rats

This study is an attempt to evaluate the hepatoprotective activity ofTabernaemontana divaricataagainst DEN and Fe NTA induced liver necrosis in rats. Ethanolic extract of the whole plant ofTabernaemontana divaricataat doses of 200 and 400 mg/kg body weight and 5-fluorouracil (standard drug) was orally administered to male Wistar Albino rats once daily for 24 weeks, simultaneously treated with the carcinogen DEN and Fe NTA. In simultaneously treated animals, the plant extract significantly decreased the levels of uric acid, bilirubin, AST, ALT, and ALP in serum and increased the levels of liver marker enzymes in liver. Treatment with the extracts resulted in a significant increase in the levels of antioxidants accompanied by a marked reduction in the levels of malondialdehyde when compared to DEN and Fe NTA treated group. When compared with 200 mg/kg bw rats, 400 mg/kg bw rats and 5-fluorouracil treated rats showed better results in all the parameters. The histopathological studies confirmed the protective effects of extract against DEN and Fe NTA induced liver necrosis. Thus, it could be concluded that the use ofTabernaemontana divaricataextract in the treatment of carcinogen induced hepatic necrosis.

GABA-A receptors play a minor role in cortical epileptic afterdischarges in immature rats

2011 ◽  
Vol 1412 ◽  
pp. 102-107 ◽  
Author(s):  
N. Tabashidze ◽  
P. Mareš
Keyword(s):  
Minor Role ◽  
Gaba A ◽  
Immature Rats ◽  
A Minor ◽  
Epileptic Afterdischarges

scholarly journals Teratogenic Potential of Solenstemma Argel Extract in Wistar Albino Rats

2021 ◽  
Author(s):  
Nazik M.E. Mustafa ◽  
Nafisa A. Osman ◽  
Shahenaz Satti ◽  
Ahmed A.Gameel ◽  
Tarig M. El-hadiyah
Keyword(s):  
Herbal Medicine ◽  
Fetal Development ◽  
Treated Group ◽  
Control Group ◽  
Albino Rats ◽  
P Value ◽  
Pregnant Rats ◽  
Histopathological Findings ◽  
Teratogenic Potential ◽  
Wistar Albino Rats

Abstract Background: The majority of people in Africa receive their basic healthcare through herbal treatments. Herbal medicine may negatively impact fetal development irreparably. Methods: This study examined teratogenic potential of Solenstemma argel extract in pregnant rats. pregnant rats were treated with Solenstemma argel from 7th to 16th day of gestation. Dosage used was 500g/kg, intraperitoneal.Results: Solenstemma argel extract treated group showed fetal abnormalities appeared as body clots, limbs abnormalities and Resorption of fetuses that appears in 25% of the fetuses (P-value = 0.01) which is significantly differ from control group. furthermore, Histopathological findings of liver sections from fetuses of Solenstemma argel - treated mothers showed loose liver texture and hepatocyte hemorrhage.Conclusions: In this study we explore the teratogenic potential of S. argel extract during the organogenesis period in pregnant rats.

scholarly journals Effect of vitamin-E on cypermethrin induced toxicity in cerebral cortex of wistar albino rats: A histological study

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Samyog Mahat ◽  
Chandra Bhusan Jha ◽  
Shamsher Shrestha ◽  
Sarun Koirala
Keyword(s):  
Vitamin E ◽  
Glial Cell ◽  
Histological Study ◽  
Harmful Effect ◽  
Treated Group ◽  
Brain Weight ◽  
Albino Rats ◽  
Agricultural Field ◽  
Pyrethroid Pesticides ◽  
Wistar Albino Rats

Backgrounds: Cypermethrin, class II pyrethroid pesticides, is commonly used in the agricultural field and house pest controls. Cypermethrin leads to neurotoxicity by crossing the blood-brain barrier, inducing oxygen stress in brain tissue. Vitamin-E is an antioxidant, involving in protecting membrane stability against free radicals induced peroxidants. This study was conducted to see the protective effect of vitamin-E on cypermethrin induced toxicity. Methodology: Fifty healthy Wistar albino rats of either sex weighing 150-200 grams were randomly selected & divided into five groups. Rats in first group served as control. Rats in second and fourth group were given cypermethrin orally at 20 mg/kg/BW for 14 and 28 days respectively. Rats in third and fifth group were give cypermethrin plus vitamin-E 2.5 ml/kg/BW orally for 14 and 28 days respectively. Rats were sacrificed and the brain was removed. Tissue processing was done. Histological analysis was carried out and statistical analysis was performed by the use of SPSS. Result: Cypermethrin treated rats showed decreased body and brain weight with severe neuronal vacuolation and decrease glial cell. While cypermethrin plus vitamin-E treated group showed increased body and brain weight, with normal glial cell and mild neuronal changes were observed. Conclusion: Cypermethrin in combination with vitamin-E minimized its harmful effect which was evidenced by improving body and brain weight gain and histological changes.

scholarly journals Effects of Provinols on Cardiodynamics and Coronary Flow in Islodated Rat Hearts

2016 ◽  
Vol 17 (2) ◽  
pp. 99-106
Author(s):  
Ana Popovic ◽  
Olga Pechanova ◽  
Radoslava Rehakova ◽  
Vladimir Zivkovic ◽  
Ivan Srejovic ◽  
...  
Keyword(s):  
Red Wine ◽  
Epidemiological Studies ◽  
Albino Rats ◽  
Alcohol Content ◽  
Experimental Conditions ◽  
Positive Effects ◽  
Rat Hearts ◽  
Wide Range ◽  
Wistar Albino Rats ◽  
Experimental Group

Abstract Provinols are an alcohol-free extract of red wine that contains a wide range of polyphenols. Polyphenols are a group of chemical compounds found in diverse plants. Polyphenols are considered to protect against cardiovascular disease. Although some older epidemiological studies have indicated that the positive effects of red wine on heart disease can be attributed to the alcohol content alone, there is now powerful evidence that polyphenols present in red wine are responsible for these positive effects. The hearts of male Wistar albino rats (n = 36, 12 in each experimental group, 10 weeks old, body mass 250 ± 30 g) were excised and retrogradely perfused according to the Langendorff technique at a gradually increasing perfusion pressure (40-120 cmH2O). Parameters of cardiac function (dp/dt max, dp/dt min, SLVP, DLVP, HR, CF) were measured after perfusion with three different concentrations of provinols (5 μg/ml, 10 μg/ml and 50 μg/ml). Administration of the highest dose (50 μg/ml) induced a significant increase in dp/dt max, dp/dt min, HR and CF compared with control conditions at CPP = 40 cmH2O, while an intermediate dose increased dp/dt max at the same CPP. Generally viewed, the results of the present study suggest that provinols may have a beneficial effect on the intact myocardium and coronary circulation. These findings could constitute an important step in further investigation of these polyphenols under different representative experimental conditions in the heart, as well as providing a good basis for potential clinical studies in this field.

scholarly journals Preliminary Study on Wound Healing Activity of Propolis in Albino Rats

2016 ◽  
Vol 1 (07) ◽  
Author(s):  
A.Timucin ATAYOGLU ◽  
Sibel SILICI
Keyword(s):  
Wound Healing ◽  
Treated Group ◽  
Control Group ◽  
Albino Rats ◽  
Wound Model ◽  
In Vitro Antibacterial Activity ◽  
Group 3 ◽  
Group 2 ◽  
Wistar Albino Rats

Background: Infection can lead to delayed wound healing. Recently it has been shown that propolis which is used in complementary medicine has an antibacterial and anti-inflammatory effect. The aim of this study is to determine whether propolis may contribute to wound healing. Material and Methods: Twenty-one male Wistar albino rats were randomly divided into three groups. Group1 and Group 2 were topically treated with propolis ointment and Thiocillin® oinment, respectively while Group 3 was the control group. On incision wound model, Thiocillin® and propolis ointments were applied on wound sites once daily for 30 days and the mean epidermal thickness (MET) at the 30th day was compared while antimicrobial activity of propolis was studied against different pathogens as well. Results: Propolis exhibited in vitro antibacterial activity against Staphylococcus aureus, Escherichia coli, Streptococcus sp. and Pseudomonas sp. It is observed that the MET in the groups of Propolis ointment and Thiocillin® ointment were significantly greater than that of the control group, while the MET in the group of propolis ointment was significantly greater than that of Thiocillin® ointment treated group. Conclusion: Propolis is effective in wound healing. Further study in-depth is necessary to probe into clinical correlation.

scholarly journals Teratogenic Potential of Solenstemma Argel Extract in Wistar Albino Rats

2021 ◽  
Author(s):  
Nazik M.E. Mustafa ◽  
Shahenaz Satti ◽  
Nafisa A. Osman ◽  
Ahmed A.Gameel ◽  
Tarig M. El-hadiyah
Keyword(s):  
Fetal Development ◽  
Treated Group ◽  
Control Group ◽  
Albino Rats ◽  
P Value ◽  
Teratogenic Effects ◽  
Pregnant Rats ◽  
Liver Histopathology ◽  
Teratogenic Potential ◽  
Wistar Albino Rats

Abstract The majority of people in Africa receive their basic health care through herbal treatments. Herbal medicine may negatively impact fetal development irreparably. This study examined the teratogenic potential of Solenstemma argel extract in pregnant rats. Pregnant rats were treated with Solenstemma argel from 7th to 16th day of gestation. The dosage used was 250 mg/kg, intraperitoneal.Solenstemma argel extract treated group showed fetal abnormalities appeared as body hemorrhage, limbs abnormalities and resorption of fetuses. These appears in 25% of the fetuses (P-value = 0.01) which is significantly differed from control group. Furthermore, histopathological findings of liver sections from fetuses of Solenstemma argel - treated mothers showed loose liver texture and hepatocytes hemorrhage.In this study, we conclude that the use Solenstemma argel extract during the organogenesis period in pregnant rats has the potential to cause teratogenic effects, as well as abnormalities in liver histopathology.

scholarly journals DOES THE INTRATYMPANIC APPLICATION OF MESNA PREVENT THE CHOLESTEATOMA? AN EXPERIMENTAL RATS STUDY

2021 ◽  
Author(s):  
BİLAL SİZER ◽  
Aylin Gül ◽  
Songül Karababa Demir
Keyword(s):  
Propylene Glycol ◽  
Histopathological Examination ◽  
Salt Water ◽  
Statistical Significance ◽  
Control Group ◽  
Albino Rats ◽  
Microscopic Evaluation ◽  
Wistar Albino Rats ◽  
The Right ◽  
Experimental Group

Purpose Studying the effect of Mesna on middle ear otitis media and cholesteatoma induced by propylene glycol on an experimental animal model. Methods The study was designed to consist of sixteen Wistar albino rats, their right ears being the control group and left ears being the experiment group. %50 propylene glycol, gentamicinsulfate and physiologic salt water were applied to the right ear and %50 propylene glycol, gentamicinsulfate and %20 Mesna were administered to the left ear through intratympanic injections on days 1, 3, 8, 15 and 21. The rats were sacrificed 45 days after the first injection and underwent histopathological examination. Results It was seen that cholesteatoma and fibrosis were less common in the experiment group in microscopic evaluation. A statistically significant decrease was observed when the average and maximum thicknesses of the tympanic membranes and the minimum thicknesses of the tympanic bulla of the control group and the experiment group were compared. (p< 0.05) Conclusion In the experimental cholesteatoma model created in rats, no statistical significance was observed, indicating that Mesna, which was applied intratympanically, completely prevented the formation of cholesteatoma. However, it was found that the prevalence of cholesteatoma formation was microscopically less in the experimental group.

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