scholarly journals Ameliorative Effects of Aspergillus awamori against the Initiation of Hepatocarcinogenesis Induced by Diethylnitrosamine in a Rat Model: Regulation of Cyp19 and p53 Gene Expression

Antioxidants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 922
Author(s):  
Doaa H. Assar ◽  
Abd-Allah A. Mokhbatly ◽  
Emad W. Ghazy ◽  
Amany E. Ragab ◽  
Samah Abou Asa ◽  
...  
Keyword(s):  
Gene Expression ◽  
Liver Cancer ◽  
Elevated Serum ◽  
P53 Gene ◽  
Male Rats ◽  
Aspergillus Awamori ◽  
Control Group ◽  
Negative Effects ◽  
Male Wistar Rats ◽  
Glutamyl Transferase

Hepatocellular carcinoma (HCC) is the most common cancer in humans. Despite advances in its treatment, liver cancer remains one of the most difficult cancers to treat. This study aimed to investigate the ameliorative action and potential mechanism of Aspergillus awamori (ASP) administration against the initiation process of liver carcinogenesis induced by diethylnitrosamine (DEN) in male Wistar rats. Seventy-two male rats were divided equally into eight groups as follows, Group 1: untreated control; Group 2: DEN (200 mg/kg bw) intra-peritoneally for the initiation of HCC; Groups 3–5: DEN + ASP at a dose of 1, 0.5, and 0.25 mg/kg bw and groups 6–8: ASP at a dose of 1, 0.5, and 0.25 mg/kg bw. Supplementation of A. awamori significantly lightened the adverse impacts induced by DEN via restoring the leukogram to normal, lowering the elevated serum aspartate aminotransferase (AST), alanine transaminase (ALT), and γ-glutamyl transferase (GGT), and alkaline phosphatase (ALP). Furthermore, it enhanced the hepatic antioxidant capacity through increasing the reduced glutathione (GSH) level and catalase (CAT) activity with a marked reduction in malondialdehyde (MDA) level. In addition, it decreased the positive GST-P foci. Likewise, a significant alteration of DEN-associated hepatocarcinogenesis occurred through inhibiting cytochrome P450 (Cyp19) and activating p53 gene expression. In conclusion, supplementation of A. awamori counteracts the negative effects of DEN, inhibits the early development of GST-P-positive foci and could be used as a new alternative strategy for its chemo-preventive effect in liver cancer. To the best of our knowledge, the present study is the first to report the hepato-protective effect of A. awamori in induced hepatocarcinogenesis.

Acute and subchronic co-administrations to cadmium, diazinon and selenium induce apparent osteoporotic symptoms in adult male rats

Biologia ◽  
2014 ◽  
Vol 69 (10) ◽  
Author(s):  
Hana Ďúranová ◽  
Monika Martiniaková ◽  
Ivana Boboňová ◽  
Radoslav Omelka ◽  
Robert Stawarz ◽  
...  
Keyword(s):  
Adult Male ◽  
Osteoporotic Fractures ◽  
Bone Diseases ◽  
Male Rats ◽  
Control Group ◽  
Femoral Bone ◽  
Negative Effects ◽  
Young Males ◽  
Male Wistar Rats ◽  
Group B

AbstractCadmium (Cd) and diazinon (DZN) are known to be environmental risk factors for various bone diseases including osteoporosis. Selenium (Se), an essential constituent of many antioxidant enzymes, has in higher concentrations negative effects on the bone. The present study was aimed to investigate possible changes in femoral bone of adult male rats after their acute and subchronic exposures to Cd, DZN and Se. A total of 30 male Wistar rats were randomized into three experimental groups. The rats in the group A (4-months-old) were injected intraperitoneally with a mixture of 2 mg CdCl2 kg−1, 20 mg DZN kg−1 and 2 mg Na2SeO3 kg−1 body weight and killed 36 h after xenobiotics had been injected. In the group B, young males (1-month-old) were administered with a combination of 30 mg CdCl2 L−1, 40 mg DZN L−1 and 5 mg Na2SeO3 L−1 in their drinking water, for 90 days. Ten 4-months-old males without toxicant supplementation served as a control group (C). After treatment period, detailed histological analysis of femoral bone was performed in each group. Our results revealed apparent osteoporotic symptoms (resorption lacunae, osteoporotic fractures) in rats from groups A and B. Moreover, histomorphometrical evaluation showed reduced bone vascularization (constricted primary osteons’ vascular canals and Haversian canals) and weakness mechanical properties of bones (smaller size of the secondary osteons) in these rats in comparison with those of the control group. Our study demonstrates for the first time that acute and subchronic co-administrations to Cd, DZN and Se induce evident manifestation characteristics of osteoporosis in male rats.

scholarly journals Upregulation of Kiss-1 and Gpr54 Genes Expression in Pituitary of Male Rats Following the Central Administration of Neuropeptide Y

2019 ◽  
Vol 4 (4) ◽  
pp. 137-142
Author(s):  
Vahid Azizi ◽  
Shahrbanoo Oryan ◽  
Homayuon Khazali ◽  
Abdolkarim Hosseini
Keyword(s):  
Gene Expression ◽  
Pituitary Gland ◽  
Neuropeptide Y ◽  
Wistar Rats ◽  
Third Ventricle ◽  
Male Rats ◽  
Control Group ◽  
Central Administration ◽  
Reproductive Axis ◽  
Male Wistar Rats

Introduction: The neuropeptide Y (NPY) in the neural circuits of the hypothalamus has a stimulating effect on reproductive activities in mammals. Kisspeptin (KiSS1) is a quintessential neurotransmitter in the reproductive axis which directly stimulates gonadotropin-releasing hormone neurons in the hypothalamus. The distribution of KiSS1 expressing cells in the pituitary was described previously. Despite earlier reports showing the KiSS1 receptor, G-protein coupled receptor 54 (GPR54) expression in the pituitary, the potential physiological roles of kisspeptin at this gland have remained obscure. Accordingly, this study investigated the role of NPY on the relative expression of Kiss1 and Gpr54 genes in the pituitary gland in male Wistar rats. Methods: In general, 20 male Wistar rats weighing 200-250 g in 4 groups (5 in each group) received saline, NPY (2.3 nM), BIBP3226 (NPY receptor antagonist, 7.8 nM), and NPY+ BIBP3226. Then, they received the simultaneous injection of these molecules through the third ventricle of the brain. Finally, the relative mean expressions of Kiss1 and Gpr54 genes in the anterior pituitary were quantitatively analyzed by the real-time polymerase chain reaction. Results: The central injection of NPY increased the relative mean expressions of Kiss1 and Gpr54 genes in the pituitary gland compared to the control group although the injection of BIBP3226 eradicated these effects. However, the gene expression of Gpr54 in the rats receiving NPY coupled with BIBP3226 in hypophysis in comparison to the group receiving only NPY demonstrated a significant reduction (P<0.05). Conclusion: Overall, the central injection of NPY stimulated the gene expression of Kiss1 and Gpr54 in the pituitary gland.

scholarly journals Interaction Between Acute Exercise and Carnitine Supplementation on the Expression of Genes Involved in Liver Metabolism in Male Rats

2021 ◽  
Vol 12 (4) ◽  
pp. 4348-4356
Keyword(s):  
Gene Expression ◽  
Acute Exercise ◽  
Liver Metabolism ◽  
Male Rats ◽  
Control Group ◽  
Carnitine Supplementation ◽  
Serum Factors ◽  
Beneficial Effects ◽  
Expression Of Genes ◽  
Male Wistar Rats

Acute exercise induces rapid and dramatic induction of transcription in the liver. The beneficial effects of carnitine on serum factors and gene expression have been proven. This study examined the interaction between acute exercise and carnitine supplementation on the expression of genes involved in liver metabolism. Thirty-two male Wistar rats were randomly assigned into 4 groups (n = 8): Group 1 control, Group 2 received 200 mg/kg/day LCAR, Group 3 performed acute exercise, and Group 4 received LCAR and performed acute exercise. Gene expression in the liver was evaluated by Real-time PCR. Acute exercise significantly increased PDK4 expression compared to other groups. Also, carnitine administration, performing an acute exercise, and combination of LCAR-Acute significantly increased AMPK and PGC-1a expression compared with the control group. The expression of SREBP-1c and SCD1 was not significantly changed between studies. The combination of acute exercise and carnitine administration increased PGC-1a expression, indicating the importance of carnitine with exercise as a beneficial supplement.

Chronic immobilization stress induces anxiety-related behaviors and affects brain essential minerals in male rats

2020 ◽  
pp. 1-8
Author(s):  
Zafer Sahin ◽  
Alpaslan Ozkurkculer ◽  
Omer Faruk Kalkan ◽  
Ahmet Ozkaya ◽  
Aynur Koc ◽  
...  
Keyword(s):  
Immobilization Stress ◽  
Central Area ◽  
Essential Elements ◽  
Male Rats ◽  
Control Group ◽  
Male Wistar Rats ◽  
Swimming Test ◽  
The Brain ◽  
Center Area ◽  
Chronic Immobilization Stress

Abstract. Alterations of essential elements in the brain are associated with the pathophysiology of many neuropsychiatric disorders. It is known that chronic/overwhelming stress may cause some anxiety and/or depression. We aimed to investigate the effects of two different chronic immobilization stress protocols on anxiety-related behaviors and brain minerals. Adult male Wistar rats were divided into 3 groups as follows ( n = 10/group): control, immobilization stress-1 (45 minutes daily for 7-day) and immobilization stress-2 (45 minutes twice a day for 7-day). Stress-related behaviors were evaluated by open field test and forced swimming test. In the immobilization stress-1 and immobilization stress-2 groups, percentage of time spent in the central area (6.38 ± 0.41% and 6.28 ± 1.03% respectively, p < 0.05) and rearing frequency (2.75 ± 0.41 and 3.85 ± 0.46, p < 0.01 and p < 0.05, respectively) were lower, latency to center area (49.11 ± 5.87 s and 44.92 ± 8.04 s, p < 0.01 and p < 0.01, respectively), were higher than the control group (8.65 ± 0.49%, 5.37 ± 0.44 and 15.3 ± 3.32 s, respectively). In the immobilization stress-1 group, zinc (12.65 ± 0.1 ppm, p < 0.001), magnesium (170.4 ± 1.7 ppm, p < 0.005) and phosphate (2.76 ± 0.1 ppm, p < 0.05) levels were lower than the control group (13.87 ± 0.16 ppm, 179.31 ± 1.87 ppm and 3.11 ± 0.06 ppm, respectively). In the immobilization stress-2 group, magnesium (171.56 ± 1.87 ppm, p < 0.05), phosphate (2.44 ± 0.07 ppm, p < 0.001) levels were lower, and manganese (373.68 ± 5.76 ppb, p < 0.001) and copper (2.79 ± 0.15 ppm, p < 0.05) levels were higher than the control group (179.31 ± 1.87 ppm, 3.11 ± 0.06 ppm, 327.25 ± 8.35 ppb and 2.45 ± 0.05 ppm, respectively). Our results indicated that 7-day chronic immobilization stress increased anxiety-related behaviors in both stress groups. Zinc, magnesium, phosphate, copper and manganese levels were affected in the brain.

Protective effect of green tea extract against cadmium-induced testicular damage in rats in respect of oxidant/antioxidant equilibrium and androgen production

2020 ◽  
Vol 21 (1) ◽  
pp. 31-35
Author(s):  
Basma El-Desoky ◽  
Shaimaa El-Sayed ◽  
El-Said El-Said
Keyword(s):  
Gene Expression ◽  
Single Dose ◽  
Green Tea ◽  
Serum Testosterone ◽  
Green Tea Extract ◽  
Male Rats ◽  
Controlled Study ◽  
Control Group ◽  
Testicular Damage ◽  
Tea Extract

Objective: Investigating the effect of green tea extract (GTE) on the testicular damage induced by cadmium chloride CdCl2 in male rats. Design: Randomized controlled study. Animals: 40 male Wistar rats. Procedures: Rats were randomly divided into four groups: A) control group (each rat daily received pellet diet); B) GTE group each rat daily received pellet diet as well as 3 ml of 1.5 % w/v GTE, C) CdCl2 group each rat was I/P injected a single dose of 1 mg/kg CdCl2, then daily received pellet diet, and D) CdCl2+GTE group each rat was I/P injected a single dose of 1 mg/kg CdCl2 then daily received pellet diet as well as 3 ml of 1.5 % w/v GTE. After 30 days, blood samples were collected for hormonal assays (testosterone, FSH, and LH). In addition, both testes were collected; one of them was used for quantification of 17-beta hydroxysteroid dehydrogenase III (17β-HSDIII) gene expression using a real-time PCR. The other testis was used for determination of catalase and reduced glutathione; GSH, Nitric oxide (NO) and malondialdehyde (MDA) levels. Results: CdCl2 decreased serum testosterone levels and its synthesis pathway (17β-HSDIII testicular gene expression). While antioxidants catalase and GSH were reduced, oxidants MDA were enriched in the testes of CdCl2-poisoned rats. This CdCl2-promoted testicular dysfunction was corrected via the administration of GTE to male rats. Conclusion and clinical relevance: GTE could be used as a remedy for protecting against CdCl2-induced testicular damage in male rats.

Attenuation of Morphine-Induced Tolerance and Dependence by Pretreatment with Cerebrolysin in Male rats

Drug Research ◽  
2017 ◽  
Vol 68 (01) ◽  
pp. 33-37 ◽  
Author(s):  
Hamed Ghavimi ◽  
Sara Darvishi ◽  
Saeed Ghanbarzadeh
Keyword(s):  
Male Rats ◽  
Control Group ◽  
Tail Flick ◽  
Tail Flick Test ◽  
Attenuation Effect ◽  
Morphine Administration ◽  
Male Wistar Rats ◽  
Potent Growth ◽  
Induced Tolerance ◽  
Withdrawal Signs

Abstract Background Dependence and tolerance to morphine are major problems which limit its chronic clinical application. Purpose This study was aimed to investigate the attenuation effect of Cerebrolysin, a mixture of potent growth factors (BDNF, GDNF, NGF, CNTF etc,), on the development of Morphine-induced dependence and tolerance. Methods Male Wistar rats were selected randomly and divided into different groups (n=8) including: a control group, groups received additive doses of morphine (5–25 mg/kg, ip, at an interval of 12 h until tolerance completion), and groups pretreated with Cerebrolysin (40, 80 and 160 mg/kg, ip, before morphine administration). Development of tolerance was assessed by tail-flick test and the attenuation effect of Cerebrolysin on morphine-induced dependence was evaluated after injection of naloxone (4 mg/kg, ip, 12 h after the morning dose of morphine). Seven distinct withdrawal signs including: jumping, rearing, genital grooming, abdominal writhing, wet dog shake and teeth grinding were recorded for 45 min and total withdrawal score (TWS) was calculated. Results Results showed that administration of Cerebrolysin could prolonged development (10 and 14 days in administration of 80 mg/kg and 160 mg/kg Cerebrolysin) and completion (4, 10 and 14 days in administration of 40, 80 and 160 mg/kg Cerebrolysin, respectively) of tolerance. Results also indicated that administration of Cerebrolysin (40, 80 and 160 mg/kg) could significantly decreased the TWS value (62±2, 77±4 and 85±6%, respectively). Conclusion In conclusion, it was found that pretreatment with Cerebrolysin could attenuated morphine-induced tolerance and dependence.

scholarly journals PROTECTIVE ROLE AND ANTIOXIDANT ACTIVITY OF AQUEOUS EXTRACT OF ROSMARINUS OFFICINALIS AGAINST TRICHLOROACETATE-INDUCED TOXICITY IN LIVER OF MALE RATS

2018 ◽  
Vol 11 (6) ◽  
pp. 420
Author(s):  
Medhat Mostafa Abozid ◽  
Hoda Ea Farid
Keyword(s):  
Aqueous Extract ◽  
Liver Damage ◽  
Protective Role ◽  
Rosmarinus Officinalis ◽  
Male Rats ◽  
Control Group ◽  
Albino Rats ◽  
Gamma Glutamyl Transferase ◽  
Group I ◽  
Glutamyl Transferase

 Objective: The current study was designed to estimate the potential protective role of the aqueous extract of rosemary (AER) (Rosmarinus officinalis) against trichloroacetic acid (TCA)-created hepatotoxicity in male albino rats.Methods: Forty male albino rats were separated into four groups of ten: Group I served as control; Group II was given AER (200 mg/kg/day) by gavage; Group III received TCA at the dose 50 mg/kg/day, and Group V was treated with AER (200 mg/kg/day) and received TCA (50 mg/kg/day). The experiment was carried out for 2 months.Results: The toxicity of TCA for rats was revealed by an elevation in liver marker enzymes activities (gamma-glutamyl transferase [GGT], alkaline phosphatase [ALP], aspartate transaminase [AST], alanine aminotransferase [ALT]) and conjugated bilirubin (CB) level, and a decrease in albumin and total protein (TP) levels. The TCA administration also caused a significant increase in the activities of catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD), and also malondialdehyde (MDA) level in liver tissues. These biochemical effects were accompanied by histological indicators of liver damage. Treatment with ARE recovered the liver damage instigated by TCA, as showed by perfection of liver enzyme markers (GGT, ALT, AST, ALP), CB, TP and albumin; as well as antioxidant parameters (CAT, SOD, GPx) and lipid peroxidation (MDA) and amelioration of histopathology changes in the liver tissues.Conclusion: It could be concluded that AER supplementation for 2 months in TCA-induced toxicity in rats benefited hepatic antioxidant status and improved liver injury and damage in male albino rats exposed to TCA.

scholarly journals Roles of Moringa oleifera Leaf Extract in Improving the Impact of High Dietary Intake of Monosodium Glutamate-Induced Liver Toxicity, Oxidative Stress, Genotoxicity, DNA Damage, and PCNA Alterations in Male Rats

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Tarfa Albrahim ◽  
Manal Abdulaziz Binobead
Keyword(s):  
Oxidative Stress ◽  
Dna Damage ◽  
Leaf Extract ◽  
Liver Toxicity ◽  
Monosodium Glutamate ◽  
Male Rats ◽  
Control Group ◽  
Gamma Glutamyl Transferase ◽  
Glutamyl Transferase ◽  
The Impact

It is common for food to be made more palatable through the use of the flavour enhancer monosodium glutamate, also known as vetsin powder. The purpose of the study described in this paper was to explore how vetsin-induced hepatic toxicity, DNA fragmentation, damage, and oxidative stress modifications could be mitigated with moringa leaf extract (MLE). To that end, 40 male rats were separated into four groups: normal control, positive control or MLE, vetsin, and vetsin combined with MLE. Results indicated that, compared to the control group, the levels of serum alanine aminotransferase (ALT), aminotransferase (AST), alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT), liver malondialdehyde (MDA), DNA damage, injury, PCNA, and P53 expressions were significantly enhanced by the administration of vetsin (P<0.05). However, the vetsin group had significantly reduced levels of albumin, globulin, total protein, liver glutathione (GSH), superoxide dismutase enzyme (SOD), catalase, and glutathione S-transferase (GST) enzyme activities (P<0.05) by comparison to control. Meanwhile, modifications in liver functions, oxidative stress, DNA damage, liver injury, and PCNA expression were alleviated when vetsin was administered alongside MLE. The authors conclude that vetsin may have many side effects and that MLE can ameliorate biochemical changes, oxidative stress, hepatic injury, PCNA, and P53 alterations induced by vetsin administration.

scholarly journals Neurotoxic Effects of Stanozolol on Male Rats‘ Hippocampi: Does Stanozolol cause apoptosis?

2019 ◽  
Vol 10 (1) ◽  
pp. 73-81
Author(s):  
Faezeh Nemati Karimooy ◽  
Alireza Ebrahimzadeh Bideskan ◽  
Abbas Mohammadi Pour ◽  
Seyed Mahmoud Hoseini
Keyword(s):  
Histopathological Examination ◽  
Apoptotic Cell ◽  
Cell Formation ◽  
Treated Group ◽  
Male Rats ◽  
Control Group ◽  
Cell Detection ◽  
Apoptotic Effect ◽  
Male Wistar Rats ◽  
The Mean

AbstractStanozolol is an anabolic-androgenic steroid which is commonly abused by athletes for improved energy, appearance, and physical size. It has been previously shown to cause changes in behaviour and has various physical effects. Studies have previously been conducted on its neurotoxic effect on the central nervous system (CNS), which are typically psychological in nature. This study was performed to investigate the apoptotic effect of stanozolol on different parts of the rat hippocampus. Sixteen male Wistar rats were divided randomly into two groups (experimental and control). The experimental group received subcutaneous injections of stanozolol (5mg/kg/day) for consecutive 28 days, whereas the control group received saline using the same dosing schedule and administration route. After routine procedures, coronal sections of rat brain were stained with Toluidine blue and TUNEL for pre-apoptotic and apoptotic cell detection, respectively. In order to compare groups, the mean number of TUNEL-positive and pre-apoptotic neurons per unit area were calculated and analysed. Histopathological examination revealed that the mean number of pre-apoptotic and apoptotic neurons in the CA1, CA2, CA3 and DG areas of the hippocampus were significantly increased in the stanozolol treated group. In conclusion, stanozolol abuse may induce pre-apoptotic and apoptotic cell formation in different regions of the hippocampus.

Sulfation pathway of thyroid hormone metabolism in selenium-deficient male rats

1995 ◽  
Vol 268 (4) ◽  
pp. E572-E579
Author(s):  
S. Y. Wu ◽  
W. S. Huang ◽  
I. J. Chopra ◽  
M. Jordan ◽  
D. Alvarez ◽  
...  
Keyword(s):  
Production Rate ◽  
Elevated Serum ◽  
Selenium Deficiency ◽  
Male Rats ◽  
Tissue Type ◽  
Constant Infusion ◽  
Control Group ◽  
Type I ◽  
Metabolic Clearance ◽  
Serum Concentrations

Male Sprague-Dawley rats were fed a selenium-deficient yeast-based laboratory diet or a control diet for 6 wk. The tissue type I 5'-monodeiodinase (5'-MDI) activity and the immunoassayable 5'-MDI were significantly (P < 0.05) reduced in the liver and the kidney but not in the thyroid of selenium-deficient rats. The mean serum concentrations of thyroxine sulfate (T4S), 3,3',5'-triiodothyronine sulfate (T3S), and reverse T3 sulfate (rT3S) (ng/dl) were significantly increased in selenium-deficient rats (15.7, 59.4, and 22.8, respectively, n = 12) compared with control rats (< 1.0, 18.5, and 9.1, respectively, n = 12, P < 0.01). Kinetic studies were carried out during a constant infusion of unlabeled sulfated iodothyronines (T4S, T3S, or rT3S, n = 5-6/group) at a rate of 1 microgram/h by Alzet minipump for 48 h. The data showed that elevated serum concentrations of T4S or T3S in the selenium-deficient rat are due both to reduced metabolic clearance rate (MCR, mean, l.kg-1.day-1, 7.4 for T4S and 4.5 for T3S in selenium deficiency vs. 12 and 9.2, respectively in controls, P < 0.05) and increased production rate (mean, microgram.kg-1.day-1, 1.2 for T4S, and 2.7 for T3S in selenium deficiency vs. 0.12 and 1.7, respectively, in the controls, P < 0.05). However, the increased serum rT3S concentration in selenium-deficient rats is due mainly to reduced MCR (mean, l.kg-1.day-1, 34 vs. 67 in controls, P < 0.05) and its daily production rate remained unchanged in selenium deficiency (mean, microgram.kg-1.day-1, 7.6 vs. 6.1 in the control group, P > 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

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