scholarly journals Development of the spine following pinealectomy or sensorimotor cortical area damage

2013 ◽  
Vol 82 (4) ◽  
pp. 411-414
Author(s):  
Richard Chaloupka ◽  
Milan Dvořák ◽  
František Tichý ◽  
Jiří Veselý ◽  
Alois Nečas
Keyword(s):  
Cortical Area ◽  
Mean Value ◽  
Albino Rats ◽  
Sham Operation ◽  
Growing Rats ◽  
Growing Rat ◽  
Group 2 ◽  
Wistar Albino Rats ◽  
New Hypothesis ◽  
Group 1

The aim of this experimental study was to assess the spine development in growing rats following pinealectomy or partial sensorimotor cortical area damage. A total of 68 Wistar albino rats (Rattus norvegicus v. alba f. domestica) aged 3–4 weeks were divided into four groups. In group 1 (n = 22) pinealectomy was performed, in group 2 (n = 24) the sensorymotor cortical area 2 × 1 × 1 mm below the coronal suture was removed. Sham operation consisted of a craniotomy (n = 11) and a craniotomy with a durotomy (n = 11). All surgeries were performed from the left side. The rats were killed four months after surgery and radiography was then made. Scoliosis, C2-T7 lordosis and T7-S1 kyphosis were measured.The brains of rats after sensorimotor cortical area removal were isolated and investigated including histological examination (light microscope). Scoliosis of 9–14 degrees (mean value 10.8) was developed in five animals after pinealectomy; in rats after removal of the sensorimotor cortical area scoliosis of 10–24 degrees (mean value 15.9) was observed in eight animals. The scoliotic curves were non structural. Our results indicate the importance of cortical area damage, together with craniotomy and durotomy in the development of growing rat spine. These damages could cause a disorder of balance between smaller inhibitory and greater facilitating area of central nervous system, controlling the muscular tone and resulting in the development of increased lordosis and kyphosis and non structural scoliosis due to muscle imbalance. Thus the new hypothesis of scoliosis aetiology was introduced.

scholarly journals Centella Asiatica Extracts Regulates Aluminium Chloride-Induced Neurotoxicity in Rats: Impact on Inflammation, Apoptosis and Biogenic Amine Levels

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8
Author(s):  
Shaik Amjad ◽  
Keyword(s):  
Body Weight ◽  
Therapeutic Potential ◽  
Centella Asiatica ◽  
Aluminium Chloride ◽  
Albino Rats ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Wistar Albino Rats ◽  
Group 1

investigate the therapeutic potential of CA against chronic Aluminium Chloride (AlCl3) exposure induced rats. Wistar albino rats were segregated into four groups: group 1-control rats, group 2-rats received AlCl3 (300 mg/kg body weight, every day orally) for 60 days, rats in group 3-received CA (500 mg/kg body weight, orally) and group 4 rats were initiated with both AlCl3 and CA treatment.

Carbontetrachloride induced acute liver damage and protective effect of n-acetylcysteine on rats with regenerated and non-regenerated liver / Karaciğeri rejenere olan ve olmayan sıçanlarda, karbontetraklorürle indüklenen akut karaciğer hasarı ve n-asetilsisteinin koruyucu etkisi

2016 ◽  
Vol 41 (3) ◽  
Author(s):  
Sedat Bilgiç ◽  
Elif Özerol ◽  
Mustafa Iraz ◽  
Nurhan Şahin ◽  
Kevser Tanbek ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Carbon Tetrachloride ◽  
Protective Effect ◽  
Albino Rats ◽  
Protective Effects ◽  
Acute Liver Damage ◽  
Antioxidant Agents ◽  
Group 2 ◽  
Wistar Albino Rats ◽  
Group 1

AbstractObjective: Our aim was to investigate 70% partial hepatectomy (PH) groups, compare with not subjected to PH groups after exposure to hepatotoxic agents for alterations in the protective effects of antioxidant agents and sensitivity of the liver. Accordingly, we aimed to investigate the toxicity of a hepatotoxic agent, carbon tetrachloride (CClMethods: 67 male Wistar Albino rats were divided into 2 main groups to total 9 subgroups: group 1, underwent PH; group 2, not subjected to PH. 0.5 ml/kg CClResults: Catalase (CAT) and superoxide dismutase (SOD) activities were significantly lower in both groups when CClConclusion: These results indicated that CCl

scholarly journals Assessment of Sub Chronic Toxicity of Sonchus cornutus in Rats

2019 ◽  
pp. 1-8
Author(s):  
Hayat Mahgoub Farah ◽  
Abdel Rahim Mohamed El Hussein ◽  
Hassan Elsubki Khalid ◽  
Halima Mohamed Osman
Keyword(s):  
Aqueous Extract ◽  
Blood Cells ◽  
Biochemical Analysis ◽  
White Blood Cells ◽  
Clinical Signs ◽  
Albino Rats ◽  
Liver And Kidney ◽  
Group 2 ◽  
Wistar Albino Rats ◽  
Group 1

Aim: To assess the toxicity of the aqueous extract of Sonchus cornutus in Wistar albino rats. Methodology: The aqueous extract of Sonchus cornutus aerial part was administered orally to rats in group 2, 3 and 4 at a dose of 50, 500 and 2000 mg/ kg, respectively for four weeks whereas, group 1 was kept as a control. The animals were observed daily for clinical signs and mortality. Weekly, the weights of the animals were recorded, and blood samples were collected for haematological and biochemical analysis. Specimens of Liver and kidney were kept in 10% formalin for histopathology. Results: The results revealed that all the animals in the four groups survived. The extract had no adverse effects on haematology, biochemistry and histology of rats at doses of 50 and 500 mg/ kg. But dose 2000 mg/kg proved to have significant alteration in White blood cells (WBCs), Red blood cells (RBCs), Haemoglobin (Hb) and Packed cell volume (PCV). In addition, total protein, albumin, urea, creatinine, Alanin Transaminase (ALT), Asparate Transaminase (AST) were significantly (P<0.05) changed. These findings correlated with the histopathological changes on liver and kidney. Conclusion: The highest dose of S. cornutus aqueous extract (2000 mg/kg) was not fatal, but may have some toxic effects on liver and kidney.

scholarly journals Biochemical and histologic changes in albino rats in response to charcoal powder exposure

2021 ◽  
Vol 15 (4) ◽  
pp. 24-36
Author(s):  
O. E. Oriakpono ◽  
◽  
C. Anuforo ◽  
E. E. Nduonofit ◽  
B. K. Deeyah ◽  
...  
Keyword(s):  
Liver Enzymes ◽  
Mean Value ◽  
Semen Parameters ◽  
Albino Rats ◽  
Skin Contact ◽  
Significant Difference ◽  
Lung Histology ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Background. In developing and under-developed countries, charcoal production predisposes workers to charcoal dust. This is a common occurrence as workers in this field are not properly protected and as such are exposed to charcoal dust through inhalation and skin contact. Charcoal comprises many components such as polycyclic aromatic hydrocarbons (PAHs). Due to the possible health risk associated with such exposure, this study was designed to determine the effects of charcoal powder of particle size 125 µm - 150 µm on certain biomarkers in male albino rats. Albino rats were used because of their similar physiology to humans. Materials and Methods. 20 albino rats weighing between 250 g and 300 g were used for this study; they were randomly distributed in 4 groups (5 rats each) and the charcoal powder was incorporated into their feed at different percentages; control, group 1 (10 % charcoal), group 2 (30 % charcoal) and group 3 (charcoal powder bedding) for 50 days. Using standard procedures and methods, the following parameters were tested: Hematological parameters, semen parameters, liver enzymes, renal function, hormones and lung histology. Results. The results indicated a decrease in the level of liver enzymes AST (IU/L) and ALT (IU/L) in group 1, group 2 and group 3 when compared to the control with the lowest value of 48.75 IU/L and 11.50 IU/L respectively recorded in group 2. Prolactin (mIU/L) had mean values of 1.73, 1.30 and 1.83 in group 1, group 2 and group 3 respectively while the control was 2.10. Testosterone (nmol/L) had a mean value of 1.18, 0.53 and 0.25 in group 1, group 2 and group 3, respectively, while the control was 0.90 with a significant difference (P<0.05). Creatinine (µmol/L) increased in group 1 and group 2 with a slight reduction in group 3 when compared to control (1.04) with a value of 1.35, 1.40 and 1.23, respectively. Total sperm count (´105/mL) had a mean value of 58.33, 50.00 and 43.25 in group 1, group 2 and group 3, respectively, while the control was 100.50. The lung histology for the treated groups revealed infiltration of inflammatory cells and thickening of inter-alveolar walls. Conclusion. Long term exposure to charcoal powder through nasal or oral route had serious effects on rats’ health, such as kidney damages, inflammation of the lungs and decrease in fertility in males primarily due to the presence of PAHs in charcoal.

scholarly journals Doxorubicin Toxicity can be Ameliorated during Antioxidant L-Carnitine Supplementation

2010 ◽  
Vol 3 (6) ◽  
pp. 428-433 ◽  
Author(s):  
Othman A. Alshabanah ◽  
Mohamed M. Hafez ◽  
Mohamed M. Al-Harbi ◽  
Zeinab K. Hassan ◽  
Salim S. Al Rejaie ◽  
...  
Keyword(s):  
Gene Expression ◽  
Thiobarbituric Acid ◽  
Albino Rats ◽  
Carnitine Supplementation ◽  
Glutathione S Transferase ◽  
Antioxidant Genes ◽  
Expression Levels ◽  
High Cumulative Dose ◽  
Group 2 ◽  
Wistar Albino Rats

Doxorubicin is an antibiotic broadly used in treatment of different types of solid tumors. The present study investigates whether L-carnitine, antioxidant agent, can reduce the hepatic damage induced by doxorubicin. Male Wistar albino rats were divided into six groups: group 1 was intraperitoneal injected with normal saline for 10 consecutive days; group 2, 3 and 4 were injected every other day with doxorubicin (3 mg/kg, i.p.), to obtain treatments with cumulative doses of 6, 12 and 18 mg/kg. The fifth group was injected with L-carnitine (200 mg/kg, i.p.) for 10 consecutive days and the sixth group was received doxorubicin (18 mg/kg) and L-carnitine (200 mg/kg). High cumulative dose of doxorubicin (18 mg/kg) significantly increases the biochemical levels of alanine transaminase, alkaline phosphatase, total bilirubin, thiobarbituric acid reactive substances (TBARs), total nitrate/nitrite (NOx) p < 0.05 and decrease in glutathione (GSH ), superoxide dismutase (SOD), glutathione peroxidase (GSHP x), glutathione-s-transferase (GST), glutathione reductase (GR) and catalase (CAT) activity p < 0.05. The effect of doxorubicin on the activity of antioxidant genes was confirmed by real time PCR in which the expression levels of these genes in liver tissue were significantly decrease compared to control p < 0.05. Interestingly, L-carnitine supplementation completely reversed the biochemical and gene expression levels induced by doxorubicin to the control values. In conclusion, data from this study suggest that the reduction of antioxidant defense during doxorubicin administration resulted in hepatic injury could be prevented by L-carnitine supplementation by decreasing the oxidative stress and preserving both the activity and gene expression level of antioxidant enzymes.

Effects of erdosteine on cyclosporin-A-induced nephrotoxicity

2011 ◽  
Vol 31 (6) ◽  
pp. 565-573 ◽  
Author(s):  
M Tutanc ◽  
V Arica ◽  
N Yılmaz ◽  
A Nacar ◽  
I Zararsiz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cyclosporin A ◽  
Protective Role ◽  
Control Group ◽  
Albino Rats ◽  
Protective Mechanism ◽  
Antioxidant Parameters ◽  
Group 2 ◽  
Wistar Albino Rats

Aim: In cyclosporin-A (CsA)-induced toxicity, oxidative stress has been implicated as a potential responsible mechanism. Therefore, we aimed to investigate the protective role of erdosteine against CsA-induced nephrotoxicity in terms of tissue oxidant/antioxidant parameters and light microscopy in rats. Materials and methods: Wistar albino rats were randomly separated into four groups. Group 1 rats treated with sodium chloride served as the control, group 2 rats were treated with CsA, group 3 with CsA plus erdosteine, and group 4 with erdosteine alone. Animals were killed and blood samples were analyzed for blood urea nitrogen (BUN), serum creatinine (Cr), uric acid (UA), total protein (TP), and albumin (ALB) levels. Kidney sections were analyzed for malondialdehyde (MDA) and nitric oxide (NO) levels and superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities, as well as for histopathological changes. Results: In the CsA group, MDA, GSH-Px, BUN, and Cr levels were increased. The TP and ALB levels were decreased. These changes had been improved by erdosteine administration. Other biochemical parameters did not show any significant change. Conclusion: These results indicate that erdosteine produces a protective mechanism against CsA-induced nephrotoxicity and suggest a role of oxidative stress in pathogenesis.

scholarly journals Thymoquinone Attenuates Diethylnitrosamine Induction of Hepatic Carcinogenesis Through Antioxidant Signaling

2010 ◽  
Vol 3 (4) ◽  
pp. 254-261 ◽  
Author(s):  
Mohamed M. Sayed-Ahmed ◽  
Abdulaziz M. Aleisa ◽  
Salim S. Al-Rejaie ◽  
Abdulaziz A. Al-Yahya ◽  
Othman A. Al-Shabanah ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Mrna Expression ◽  
Nigella Sativa ◽  
Antioxidant Properties ◽  
Cancer Chemoprevention ◽  
Thiobarbituric Acid ◽  
Albino Rats ◽  
Hepatic Carcinogenesis ◽  
Group 2 ◽  
Wistar Albino Rats

Hepatocellular carcinoma accounts for about 80–90% of all liver cancer and is the fourth most common cause of cancer mortality. Although there are many strategies for the treatment of liver cancer, chemoprevention seems to be the best strategy for lowering the incidence of this disease. Therefore, this study has been initiated to investigate whether thymoquinone (TQ),Nigella sativaderived-compound with strong antioxidant properties, supplementation could prevent initiation of hepatocarcinogenesis-induced by diethylnitrosamine (DENA), a potent initiator and hepatocarcinogen, in rats. Male Wistar albino rats were divided into four groups. Rats of Group 1 received a single intraperitoneal (I.P.) injection of normal saline. Animals in Group 2 were given TQ (4 mg/kg/day) in drinking water for 7 consecutive days. Rats of Group 3 were injected with a single dose of DENA (200 mg/kg, I.P.). Animals in Group 4 were received TQ and DENA. DENA significantly increased alanine transaminase (ALT), alkaline phosphatase (ALP), total bilirubin, thiobarbituric acid reactive substances (TBARS) and total nitrate/nitrite (NOx) and decreased reduced glutathione (GSH), glutathione peroxidase (GSHPx), glutathione-s-transferase (GST) and catalase (CAT) activity in liver tissues. Moreover, DENA decreased gene expression of GSHPx, GST and CAT and caused severe histopathological lesions in liver tissue. Interestingly, TQ supplementation completely reversed the biochemical and histopathological changes induced by DENA to the control values. In conclusion, data from this study suggest that: (1) decreased mRNA expression of GSHPx, CAT and GST during DENA-induced initiation of hepatic carcinogenesis, (2) TQ supplementation prevents the development of DENA-induced initiation of liver cancer by decreasing oxidative stress and preserving both the activity and mRNA expression of antioxidant enzymes.

scholarly journals Tetracalcium Phosphate Treatment on Experimental Fracture Model in Rats

2020 ◽  
Author(s):  
Burak Kaymaz ◽  
Onur Yılmaz ◽  
Ali Osman Taşova ◽  
Doğukan Anapa
Keyword(s):  
Fracture Healing ◽  
Bone Union ◽  
Albino Rats ◽  
Left Femur ◽  
Tetracalcium Phosphate ◽  
Significant Difference ◽  
Additional Procedure ◽  
Phosphate Treatment ◽  
Group 2 ◽  
Wistar Albino Rats

Abstract Background: Studies have shown that bioactive cements have beneficial bone-forming effects. Our objective in the present study is to investigate the efficacy of tetracalcium phosphate (TTCP) on fracture healing in rat femur.Materials and methods: Forty-two female Wistar Albino rats randomized into two groups (groups 1 and 2, n=21 for each). The left femur of all animals was fractured by osteotomy after deep anesthesia with ketamine. Additional procedure was not applied to the rats in group 1. Rats in Group 2, following osteotomy were applied to the fracture line approximately 2 cc TTCP. The animals were sacrificed on the 1st, 2nd and 3rd post-operative weeks (each week 7 animals were sacrificed from each group) and the broken femur were removed. The femur were examined first radiographically and second, histopathologically.Results: Radiologically, callus maturity and bone union increased with time in both groups. But no significant differences were found regarding callus maturity and bone union in weekly comparisons (Anteroposterior plain: p:0.53, p:0.37, p:0.42, Lateral plain p:0.26, p:0.42, p:0.87). Histopathologically, the fractures healed normally as the weeks progressed in both groups. In the comparison of both groups, no significant difference was found outside the 1st week, although the histological scores of group 2, who were treated for all weeks, were higher in terms of fracture healing (p:0,024, p:104,p:462).Conclusions: Although no significant difference was found in the comparison of both groups except for the first week, the histological scores of the group 2 who received TTCP in all weeks were higher in terms of fracture healing. According to the results of this study, we think that TTCP can be useful especially in the early stages of fracture healing.

Can N-Acetylcysteine Preserve Peritoneal Function and Morphology in Encapsulating Peritoneal Sclerosis?

2009 ◽  
Vol 29 (2_suppl) ◽  
pp. 202-205 ◽  
Author(s):  
Devrim Bozkurt ◽  
Ender Hur ◽  
Burcu Ulkuden ◽  
Murat Sezak ◽  
Hasim Nar ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Cell Count ◽  
Degradation Products ◽  
Isotonic Saline ◽  
Control Group ◽  
Albino Rats ◽  
Peritoneal Fibrosis ◽  
Beneficial Effects ◽  
Group 2 ◽  
Wistar Albino Rats

Long-term use of the peritoneum as a dialysis membrane results in progressive irreversible dysfunction, described as peritoneal fibrosis. Oxidative stress during peritoneal dialysis has been established in many studies. Generation of reactive oxygen species (ROS) by conventional peritoneal dialysis solutions, regardless of whether produced by high glucose, angiotensin II, or glucose degradation products may be responsible for progressive membrane dysfunction. The well-known antioxidant molecule N-acetylcysteine (NAC) is capable of direct scavenging of ROS. The aim of the present study was to investigate the effect of NAC therapy on both progression and regression of encapsulating peritoneal sclerosis (EPS). We divided 49 nonuremic Wistar albino rats into four groups: Control group—2 mL isotonic saline intraperitoneally (IP) daily for 3 weeks; CG group—2 mL/200 g 0.1% chlorhexidine gluconate (CG) and 15% ethanol dissolved in saline injected IP daily for a total of 3 weeks; Resting group—CG (weeks 1 – 3), plus peritoneal resting (weeks 4 – 6); NAC-R group—CG (weeks 1 – 3), plus 2 g/L NAC (weeks 4 – 6). At the end of the experiment, all rats underwent a 1-hour peritoneal equilibration test with 25 mL 3.86% PD solution. Dialysate-to-plasma ratio (D/P) urea, dialysate white blood cell count (per cubic milliliter), ultrafiltration (UF) volume, and morphology changes of parietal peritoneum were examined. The CG group progressed to encapsulating peritoneal sclerosis, characterized by loss of UF, increased peritoneal thickness, inflammation, and ultimately, development of fibrosis. Resting produced advantages only in dialysate cell count; with regard to vascularity and dialysate cell count, NAC was more effective than was peritoneal rest. Interestingly, we observed no beneficial effects of NAC on fibrosis. That finding may be a result of our experimental severe peritoneal injury model. However, decreased inflammation and vascularity with NAC therapy were promising results in regard to membrane protection.

A novel rat model for the study of intraosseous metastatic spine cancer

2005 ◽  
Vol 2 (3) ◽  
pp. 303-307 ◽  
Author(s):  
Ajay Mantha ◽  
Federico G. Legnani ◽  
Carlos A. Bagley ◽  
Gary L. Gallia ◽  
Ira Garonzik ◽  
...  
Keyword(s):  
Rat Model ◽  
Breast Adenocarcinoma ◽  
Rank Test ◽  
Functional Score ◽  
Histopathological Analysis ◽  
Sham Operation ◽  
Content Type ◽  
Group 2 ◽  
Fine Print ◽  
Group 1

Object. Although metastatic spinal disease constitutes a significant percentage of all spinal column tumors, an accessible and reproducible animal model has not been reported. In this study the authors describe the technique for creating an intraosseous spinal tumor model in rats and present a functional and histological analysis. Methods. Eighteen female Fischer 344 rats were randomized into two groups. Group 1 animals underwent a transabdominal exposure and implantation of CRL-1666 breast adenocarcinoma into the L-6 vertebral body (VB). Animals in Group 2 underwent a sham operation. Hindlimb function was tested daily by using the Basso-Beattie-Bresnahan scale. Sixteen days after tumor implantation, animals were killed and their spines were removed for histological assessment. Statistical analysis was performed using the Wilcoxon signed-rank test. By Day 15 functional analysis showed a significant decrease in motor function in Group 1 animals (median functional score 2 of 21) compared with Group 2 rats (median functional score 21 of 21) (p = 0.0217). The onset of paraparesis in Group 1 occurred within 14 to 16 days of surgery. Histopathological analysis showed tumor proliferation through the VB and into the spinal canal, with marked osteolytic activity and spinal cord compression. Conclusions. Analysis of these findings demonstrates the consistency of tumor growth in this model and validates the utility of functional testing for onset of paresis. This new rat model allows for the preclinical evaluation of novel therapeutic treatments for patients harboring metastatic spine disease.

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