Function In Male Wistar Rats Research Articles

Effects of oxycodone hydrochloride on reproductive functions in male wistar rats

Drug iatrogenicity is a constantly evolving phenomenon, affecting several therapeutic classes. The aim of the present study was to investigate the effects of prolonged administration of oxycodone hydrochloride, a central analgesic, on reproductive functions in male rats. Materials and methods: three groups of 5 rats each were created; distilled water 0.5 ml/100g, oxycodone hydrochloride 5 and 10 mg/kg. The different products were administered orally daily for 30 days. The variables studied were: animal behaviour, prostate, testicular and epididymal weights, spermogram parameters and hormonal biomarkers (FSH, LH and testosterone levels). Results: behaviorally and morphologically, the results obtained show that oxycodone hydrochloride at doses of 5 and 10 mg/kg causes stiffness of the animals' tails, priaprism and atrophy of the prostate, testicles and epididymis, of which intensity was dose-dependent. On spermogram parameters, oxycodone hydrochloride caused a significant decrease in sperm motility (p<0.001) and in the number of normal spermatozoa (p<0.05). Administration of oxycodone hydrochloride to rats significantly decreased testosterone levels (p<0.05) and an increase in LH levels. Conclusion: Oxycodone hydrochloride, administered to animals at doses of 5 and 10 mg/kg, causes morphological disturbances of the gonads and related structures, spermogram parameters and gonadal hormones. Keywords: oxycodone hydrochloide, spermatic and hormonal parameters, gonads, rat

Electrophysiological and biochemical effect of zinc oxide nanoparticles on heart functions of male Wistar rats

Zinc oxide nanoparticles (ZnO NPs) are one of the most abundantly used nanomaterials in cosmetics and topical products, and nowadays, they are explored in drug delivery and tissue engineering. Some recent data evidenced that they are responsible for cardiotoxic effects and systemic toxicity. The present study aimed to investigate the toxic effect of ZnO NPs (39 nm) on the heart of Wistar rats and to perform a dose–response relationship using three different dose levels (25, 50, 100 mg/kg bw) of ZnO NPs on the electrocardiogram (ECG) readings, the levels of biochemical function parameters of heart, and the oxidative stress and antioxidant biomarkers. Furthermore, zinc concentration level and histopathological examination of heart tissues were determined. ZnO NPs showed a dose-dependent effect, as the 100 mg/kg bw ZnO NPs treated group showed the most significant changes in ECGs parameters: R–R distance, P–R interval, R and T amplitudes, and increased levels of heart enzymes Creatine Kinase- MB (CK-MB) and Lactate dehydrogenase (LDH). On the other hand, elevated zinc concentration levels, oxidative stress biomarkers MDA and NO, and decreased GSH levels were found also in a dose-dependent manner, the results were supported by impairment in the histopathological structure of heart tissues. While the dose of 100 mg/kg bw of ZnO bulk group showed no significant effects on heart function. The present study concluded that ZnO NPs could induce cardiac dysfunctions and pathological lesions mainly in the high dose.

Impact of L-Arginine Supplementation on Thyroid Function in Male Wistar Rats Exposed to Dichlorvos

Impact of L-Arginine Supplementation on Thyroid Function in Male Wistar Rats Exposed to Dichlorvos

Thiacloprid impairs reproductive functions of male Wistar rats

Global male infertility correlated to the rise of endocrine-disrupting chemicals, including insecticides, has grown into a pressing problem. Thiacloprid is one of the most commonly used neonicotinoids that accounts for more than 25% of the global pesticide industry. However, its impact on the reproductive system and male fertility has not been fully elucidated. The object of this study was to explore the adverse effects of thiacloprid on male Wistar rats’ reproductive system. Thirty healthy male rats were separated into one of three groups: control group, and two groups that were orally administered with low (22.5 mg/kg) and high dose (62.1 mg/kg) of thiacloprid for 56 days. Thiacloprid significantly (p<0.05) reduced body weight and relative testicular weight, as well as sperm quality (count, motility, viability, and morphology), in a dose-dependent manner. THIA-treated groups revealed a large effect (d > 0.8) on semen quality with Cohen’s d of (6.57, 8.82), (20.14, 23.54), and (2.81, 9.10) for count, motility, and viability respectively. Meanwhile, the serum testosterone level dropped while the levels of luteinizing and follicle-stimulating hormones increased. 17ꞵ-hydroxy steroid dehydrogenase and 3ꞵ-hydroxy steroid dehydrogenase levels were significantly decreased in a dose-dependent manner. The activity of the tested antioxidant enzymes catalase (CAT), glutathione reduced (GSH), and superoxide dismutase (SOD) exhibited a considerable decrease compared to the control group with a significant elevation in the lipid peroxidation activity as indicated by malondialdehyde (MDA) level. The testicular histology revealed degenerative changes in spermatogenic cells and interstitial tissue. Comet assay revealed DNA fragmentation in treated groups’ testicular tissue. Thiacloprid exposure interferes with reproductive function and impairs male Wistar rat fertility. Such harmful consequences may also develop in humans frequently exposed to thiacloprid.

Supplementation of Saussurea costus root alleviates sodium nitrite-induced hepatorenal toxicity by modulating metabolic profile, inflammation, and apoptosis.

Sodium nitrite (NaNO2) is a widely used food ingredient, although excessive concentrations can pose potential health risks. In the present study, we evaluated the deterioration effects of NaNO2 additives on hematology, metabolic profile, liver function, and kidney function of male Wistar rats. We further explored the therapeutic potential of supplementation with S. costus root ethanolic extract (SCREE) to improve NaNO2-induced hepatorenal toxicity. In this regard, 65 adult male rats were divided into eight groups; Group 1: control, Groups 2, 3, and 4 received SCREE in 200, 400, and 600mg/kg body weight, respectively, Group 5: NaNO2 (6.5mg/kg body weight), Groups 6, 7 and 8 received NaNO2 (6.5mg/kg body weight) in combination with SCREE (200, 400, and 600mg/kg body weight), respectively. Our results revealed that the NaNO2-treated group shows a significant change in deterioration in body and organ weights, hematological parameters, lipid profile, and hepatorenal dysfunction, as well as immunohistochemical and histopathological alterations. Furthermore, the NaNO2-treated group demonstrated a considerable increase in the expression of TNF-α cytokine and tumor suppressor gene P53 in the kidney and liver, while a significant reduction was detected in the anti-inflammatory cytokine IL-4 and the apoptosis suppressor gene BCL-2, compared to the control group. Interestingly, SCREE administration demonstrated the ability to significantly alleviate the toxic effects of NaNO2 and improve liver function in a dose-dependent manner, including hematological parameters, lipid profile, and modulation of histopathological architecture. Additionally, SCREE exhibited the ability to modulate the expression levels of inflammatory cytokines and apoptotic genes in the liver and kidney. The phytochemical analysis revealed a wide set of primary metabolites in SCREE, including phenolics, flavonoids, vitamins, alkaloids, saponins and tannins, while the untargeted UPLC/T-TOF-MS/MS analysis identified 183 metabolites in both positive and negative ionization modes. Together, our findings establish the potential of SCREE in mitigating the toxic effects of NaNO2 by modulating metabolic, inflammatory, and apoptosis. Together, this study underscores the promise of SCREE as a potential natural food detoxifying additive to counteract the harmful impacts of sodium nitrite.

The Effect of sub-chronic Linuron Exposure on Thyroid, Liver, and Kidney Function in Male Wistar Rats.

Herbicides are routinely used to control noxious plants. Most of these chemicals may cause toxicity and endocrine disruption in humans and wildlife. This study aimed to evaluate the influence of linuron on thyroid hormone levels and some hepatic and renal parameters and organ (thyroid, liver and kidney) structures to assume their toxicity toward experimental animals and to evaluate the endocrine disrupting capacity of this chemical. Two groups (8 rats each) were used for an in vivo study. The lot I served as control. Lot II was exposed to 40mg/200mg/day pesticide for 50 days. Changes in hepatic and renal parameters and histological structure were investigated in different treated groups. Data from this study showed that linuron altered thyroid function as evidenced by abnormal TSH, T4, and T3 levels. Furthermore, exposure to linuron induces a significant decrease in body weight and a significant increase in aspartate aminotransferase, alanine transaminase, total bilirubin, uric acid, creatinine, glutathione, and malondialdehyde. Previous data were confirmed through the histopathological examination of different organs. The most used phenylurea herbicide, linuron, disrupted thyroid function at a 40mg/200mg/day dose and produced oxidative stress in the liver and kidney in male Wistar rats. The data of this study warrant further investigation.

Effect of sub-dermal exposure of silver nanoparticles on hepatic, renal and cardiac functions accompanying oxidative damage in male Wistar rats

Silver nanoparticles (AgNPs) have been generally used due to their strong antibacterial, antiviral and antifungal and antimicrobial properties. However, their toxicity is a subject of sustained debate, thus requiring further studies. Hence, this study examines the adverse effects of the sub-dermal administered dose of AgNPs (200 nm) on the liver, kidney and heart of male Wistar rats. Thirty male rats were randomly distributed into six groups of five animals per group. Group A and D served as the control and received distilled water for 14 and 28 days respectively. Groups B and C were sub-dermally exposed to AgNPs at 10 and 50 mg/kg daily for 14 days while E and F were sub-dermally exposed to AgNPs at 10 and 50 mg/kg daily for 28 days. The liver, kidney and heart of the animals were collected, processed and used for biochemical and histological analysis. Our results revealed that the subdermal administration of AgNPs induced significant increased (p < 0.05) activities of aspartate aminotransferase (AST), alanine transferase (ALT), alkaline phosphatase (ALP), urea, creatinine, and malondialdehyde (MDA) while decreasing the levels of glutathione (GSH), catalase (CAT), superoxide dismutase (SOD), and total thiol groups in the rat tissues. Our findings suggest that the subdermal administration of AgNPs induced oxidative stress and impaired the hepatic, renal and cardiac functions of male Wistar rats.

The Anti-Oxidant Effects of Vitamins on Lead-Induced Reproductive Toxicity in Male Wistar Rats

Aim: The current study investigated the anti-oxidant effects of vitamins on lead-induced reproductive toxicity in male wistar rats.&#x0D; Study Design: A total of 48 male Wistar rats divided into 6 groups of 8 rats per group were used in this study. Group 1 served as the positive control and was given normal animal feed and water ad libitum. Group 2 was the negative control and was administered 10mg/kg body weight of lead acetate (Pb) only, Group 3 was administered with 200mg/kg body weight of vitamin C only, Group 4 was given 1000IU/kg body weight of vitamin E only, Group 5 was given 10mg/kg body weight of lead and 200mg/kg body weight of vitamin C while Group 6 was given 10mg/kg body weight of lead and 1000IU/kg body weight of vitamin E. The administration of the test substances lasted for 4 weeks after which the animals were sacrificed. Blood samples were collected and assayed for reproductive hormones. Semen was also extracted from the testis for the assay of sperm parameters while the testis and epididymis were harvested for histological analyses.&#x0D; Place and Duration of Study: The study was carried out in the Department of Human Physiology of University of Port Harcourt and it lasted for a period of 6 months.&#x0D; Results: The results showed that lead significantly decreases the concentration of the reproductive hormones, decreases the sperm parameters and destroys the histological architecture of the testis and epididymis. The antioxidants were found to ameliorate the damages done by lead on the reproduction hormones, sperm parameters and the histology of the testis and epididymis.&#x0D; Conclusion: It was therefore concluded that the anti-oxidants may be used as suitable substitutes to chelating agents in ameliorating lead-induced toxicity on the reproductive function of male wistar rats.

Investigation of Physiologic Effect of Prolonged Consumption of Raphia Hookeri Fruits Pulp Aqueous Extract on Renal Functions of Male Wistar Rats

The aim of this study is to investigate the physiologic effect of prolonged consumption of Raphia Hookeri fruits pulp aqueous extract on renal functions of male wistar rats. A total of 32 male wistar rats of weight ranging from 130gram to 200grams were used. The extract was administered orally for each 4 groups except control (group1) for twenty-eight (28) days. Group 1 rats were given animal feed and water only, group 2 were given 500mg/kg body weight of the extract, group 3 were given 1000mg/kg body weight of the extract, group 4 were given 2000mg/kg body weight of extract. The statistical analysis done using mean and standard deviation, P value at ≤ 0.05 and results showed that the sodium ion levels in all the test groups were marginally raised when compared to group 1, potassium ion levels in all test groups had only non-significant variations when compared to both the control and test groups but in test groups were seen to be slightly reduced with respect to group 1. Groups 2, 3 and 4 indicated elevated bicarbonate ion but of all, it was most and significant in group 4 when compared to group 1. Chloride ion indicated non-uniform and non-significant changes when compared to both the control and test groups. Creatinine all indicates non-significant effects of the extract when compared to group 1. The increase observed in urea and creatinine indicates that kidney function would deteriorate as it prolongs which negatively alter the renal physiology of the male wistar rats.

Effects of Pegagan Embun (Hydrocotyle sibthorpioides Lam) Extract on Renal Function in Male Wistar Rats as Assessed by Creatinine Clearance

In Indonesia, pegagan embun (Hydrocotyle sibthorpioides Lam), a low-growing plant native to southeastern Asia, has been used as a traditional medicine to treat numerous ailments. However, additional research on the safety of this plant is needed, particularly before it can be promoted as a potential immune system-boosting drug. The present study aimed to evaluate the sub-acute toxicity effects of ethanol extract of Hydrocotyle sibthorpioides (HS) on renal function. Thirtysix male Wistar rats divided into four groups were used for this study. The control group was given NaCMC (0.5%), and the three treatment groups received an oral dose of the extract of HS at doses of 7, 35, and 150 mg/kg BW, respectively, for 21 days. The parameters measured include: 24-hour urine volume, serum creatinine, urine creatinine, creatinine clearance, and the percentage of renal function on the 7th, 14th, and 21st days were determined. The results showed that doses of HS extract at 7, 35, and 150 mg/kg BW significantly affected creatinine clearance (p&lt;0.05). In contrast, the duration of administration has no significant effect on creatinine clearance (p&gt;0.05). Renal function increased above the standard value (&gt;100%) at 7 and 35 mg/kg BW doses. Thus, these concentrations could potentially cause impairments in renal function. The study concludes that various doses of the ethanol extract of Hydrocotyle sibthorpioides affected renal creatinine clearance in Wister rats. In contrast, the duration of administration of Hydrocotyle sibthorpioides extract did not affect creatinine clearance in the test animals.

Thermoneutrality induces vascular dysfunction and impaired metabolic function in male Wistar rats: a new model of vascular disease.

Objective:Cardiovascular disease is of paramount importance, yet there are few relevant rat models to investigate its pathology and explore potential therapeutics. Housing at thermoneutral temperature (30 °C) is being employed to humanize metabolic derangements in rodents. We hypothesized that housing rats in thermoneutral conditions would potentiate a high-fat diet, resulting in diabetes and dysmetabolism, and deleteriously impact vascular function, in comparison to traditional room temperature housing (22 °C).Methods:Male Wistar rats were housed at either room temperature or thermoneutral temperatures for 16 weeks on either a low or high-fat diet. Glucose and insulin tolerance tests were conducted at the beginning and end of the study. At the study's conclusion, vasoreactivity and mitochondrial respiration of aorta and carotid were conducted.Results:We observed diminished vasodilation in vessels from thermoneutral rats (P < 0.05), whereas high-fat diet had no effect. This effect was also observed in endothelium-denuded aorta in thermoneutral rats (P < 0.05). Vasoconstriction was significantly elevated in aorta of thermoneutral rats (P < 0.05). Diminished nitric oxide synthase activity and nitrotyrosine, and elevated glutathione activity were observed in aorta from rats housed under thermoneutral conditions, indicating a climate of lower nitric oxide and excess reactive oxygen species in aorta. Thermoneutral rat aorta also demonstrated less mitochondrial respiration with lipid substrates compared with the controls (P < 0.05).Conclusion:Our data support that thermoneutrality causes dysfunctional vasoreactivity, decreased lipid mitochondrial metabolism, and modified cellular signaling. These are critical observations as thermoneutrality is becoming prevalent for translational research models. This new model of vascular dysfunction may be useful for dissection of targetable aspects of cardiovascular disease and is a novel and necessary model of disease.

Improved Reproductive Functions of Male Wistar Rats Administered with Leaf Extract of Cnidoscolus aconitifolius

This study investigated the effects of hydromethanol leaf extract of Cnidoscolus aconitifolius on some male reproductive functions in Cadmium chloride (Cdcl2) toxicity-induced male Wistar rats. Twenty four adult male Wistar rats were used for this study. The animals were divided into four groups (6 rats each) as follows: Group 1 (negative control), Group 2 (positive control) which received 5mg/kg CdCl2, Groups 3 and 4 received 200 and 400 mg/kg BW of extract and 5mg/kg CdCl2 respectively. Duration of extract administration was 30 days, while males were co-habited with females in the last 10 days of the study to determine fertility index. Subsequently, the rats were sacrificed following light chloroform anaesthesia, while samples were collected for analysis. Phytochemical screening of the leaf extract revealed the presence of alkaloids, flavonoids, phlobatannins, saponins, triterpenoids and cardenolide; and the analysis of data was by SPSS version 23. The analysed result indicated that the extract caused a significant (p&lt;0.05) increase in FSH and testosterone levels. The percentages of viable sperm cells, sperm cells with normal morphology and actively motile sperm cells as well as sperm count were significantly increased. In addition, the fertility index in the rats that received higher dose (400mg/kg) of the extract was significantly increased. Conclusively, extract of Cnidoscolus aconitifolius mitigated against Cdcl2 induced toxicity in some reproductive parameters of male Wistar rats.

Impact of Prenatal and Postnatal Exposure to Endocrine Disrupter DDT on Adrenal Medulla Function

Epinephrine is the most abundant catecholamine hormone, produced by the nervous system and adrenal glands. Endocrine disruption of epinephrine synthesis, secretion and signaling is less studied than steroid and thyroid hormones. Dichlorodiphenyltrichloroethane (DDT) is recognized as one of the most prominent environmental contaminants with a long half-life. It is a potent endocrine disrupter affecting sex steroid, mineralocorticoid, glucocorticoid and thyroid hormone production. Exposure to low doses of DDT is universal and begins in utero. Therefore, we studied adrenal medulla growth and function in male Wistar rats exposed to low doses of DDT during prenatal and postnatal development until puberty and adulthood, as well as rats exposed to DDT since the first day of postnatal development. All the exposed rats demonstrated lowered epinephrine blood levels, gradually reducing with age. DDT was found to inhibit the synthesis of tyrosine hydroxylase and affect the mitochondrial apparatus of epinephrine-producing cells during puberty and even after maturation. Low-dose exposure to DDT from birth resulted in more pronounced changes in adrenomedullary cells and a more profound decrease (up to 50%) in epinephrine secretion in adult rats. Prenatal onset of exposure demonstrated a mild effect on epinephrine-producing function (30% reduction), but was associated with lower rate of adrenal medulla growth during maturation and 25% smaller adrenal medullar size in adult rats. All subjects exposed to low doses of DDT failed to develop adaptive changes and restore proper epinephrine production. These results indicate a dysmorphogenetic effect of prenatal exposure and disruption of secretory function of adrenal chromaffin cells by postnatal exposure to DDT.

Effects of Saccharum officinarum Molasses on Hematology and Hepatic Functions of Male Wistar Rats

Effects of Saccharum officinarum Molasses on Hematology and Hepatic Functions of Male Wistar Rats

Liver and Renal Cell Damage Following Excess Bee Honey Consumption in Male Wistar Rat

Honey is a widely used natural product with several health benefits. However, there is paucity of information on its excessive usage. The present study investigated the effect of excess honey consumption on hepato-renal functions in male wistar rats. Twenty-eight adult male Wistar rats were selected into four groups (n=7) and treated with distilled water (control) and 1ml, 2ml and 3ml of honey respectively for 5 weeks. Thereafter, the animals were euthanised and blood as well as kidney and liver were collected for further studies. There was a significant increase in Creatinine, Bilirubin, Urea AST, ALP, total protein as well as a significant decrease in RBC, WBC, haemoglobin, lymphocyte and PCV. Histology of the liver and kidney revealed a significant degeneration and necrosis in a dose dependent manner. This study suggest that excess honey consumption causes liver and renal cellular damage as well as haematological alterations.

Role of Rotatory Cage Induced Stress on Alteration of Liver Function in Male Wistar Rats

Role of Rotatory Cage Induced Stress on Alteration of Liver Function in Male Wistar Rats

Effects of Quail (Coturnix Japonica Temminck and Schlegel) Egg Against Rotenone-Induced Loss of Neuronal Function in Male Wistar Rats

Effects of Quail (Coturnix Japonica Temminck and Schlegel) Egg Against Rotenone-Induced Loss of Neuronal Function in Male Wistar Rats

Acute and Sub-Acute Oral Toxicity Profile of Purified Tomato Extract on the Liver and Kidney Functions of Male Wistar Rats

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Green tea leaves extract with low concentration of EGCG can provide health benefits without causing renal damage

AbstractGreen tea or its concentrated extract is coveted for its health promoting catechin-like polyphenols, especially epigallocatechin-3-gallate (EGCG). However, its amicable efficacy is now being doubted considering the recent occurrence of several cases of hepato- and nephrotoxicity, after the ingestion of EGCG-fortified (≥85–90%) nutritional supplements. Therefore, the current study was carried out to ascertain the effect of green tea leaves extract (GTE), having low EGCG content (73.8%), on liver and kidney functions of male Wistar rats using various in vivo experiments and in vitro radical scavenging activity. In terms of acute toxicity, GTE was observed to be safe when delivered at a dosage of 2000 mg kg−1 body weight (BW). Oral delivery of GTE for 28 days at a concentration of 200 mg kg−1 BW/day did not trigger sub-acute toxicity to the liver and kidneys, as per serum biochemical analyses and histopathological examination. In contrast, GTE counteracted the effects of carbon tetrachloride (a potent hepato-degenerative compound) on the liver. Furthermore, increase in high-density lipoprotein―cholesterol with concomitant lowering of serum triglycerides and low-density lipoprotein―cholesterol were noticed in GTE-treated rats. These findings suggest that low EGCG containing GTE, with appreciable antioxidant activity (IC50 = 53.18–71.28 μg mL−1), can serve as a hepatoprotective, hypolipidemic, and hypocholesterolemic ingredient.

A High-Fat Diet Containing 50% Egg-Phosphatidylcholine Increased the Proportion of T Cells Expressing a Memory Marker in Male Wistar Rats

ObjectivesStudies have suggested that high-fat (HF) diets are associated with immune dysfunction, which results in a lower production of IL-2 and a lower proportion of helper T cells. Providing a diet containing 100% phosphatidylcholine (PC), a form of choline mainly found in eggs, has been shown to increase IL-2 production early in life. However, this is of no relevance for human consumption since no human diet will contain 100% PC. Therefore, the objective of this study was to determine the dose effect of egg-PC added to a high fat diet compared to a control high fat and low fat diets on T cell function in male Wistar rats. MethodsAt four weeks of age, male Wistar rats were randomized to consume one of 6 diets: 1- Control low fat (CLF, 10%wt/wt fat, 100% free choline (FC), n = 10); 2- Control high fat (CHF, 25% wt/wt fat, 100% FC, n = 10); 3- 100% PCHF (100PCHF, 25% wt/wt fat, 100% PC, n = 10); 4- 75% PCHF (75PCHF, 25% wt/wt fat, 75% PC, 25% FC, n = 10); 5- 50% PCHF (50PCHF, 25% wt/wt fat, 50% PC, 50% FC, n = 10); 6- 25% PCHF (25PCHF; 25% wt/wt fat, 25% PC, 75% FC, n = 10). Fatty acid composition was closely matched in all of the diets. Anthropometric data was collected through the duration of the study (12 weeks). At the end of the study, splenocytes phenotypes were measured by flow cytometry. ResultsFrom week 1 to week 10 there was no difference in body weight between the diets. Starting from week 2 the CLF group had a higher food intake compared to the other groups. The 50PCHF diet had a higher proportion of helper T cells (CD4+) compared to the CLF and CHF diets. In addition, 50PCHF had a higher proportion of helper T cells expressing IL-2 receptors (CD4+CD25+) compared to 25PCHF (P < 0.05). 50PCHF also had a higher proportion of T cells expressing a memory marker (CD3+CD27+) compared with all HF diets (all P < 0.05) but not the CLF diet. ConclusionsOur results suggest that a diet providing 50% of total choline in the form of egg-PC normalizes the proportion of T cells expressing CD27 in the context of a HF diet which may lead to a better immune response if a second exposure to a pathogen occurs. Whether the higher proportion of helper T cells expressing the IL-2 receptor in the 50PCHF group is associated with better T cell response upon challenge remains to be investigated. Funding SourcesEgg farmers of Canada, NSERC.