MELATONIN ON ENDOCRINE DNA CHANGES IN FEMALE RATS AT INCREASING AGES

1971 ◽  
Vol 68 (3) ◽  
pp. 597-604 ◽  
Author(s):  
D. V. Singh ◽  
C. W. Turner
Keyword(s):  
Body Weight ◽  
Treated Group ◽  
The Other ◽  
Female Rats ◽  
Unit Weight ◽  
Control Group ◽  
Uterine Weight ◽  
Endocrine Glands ◽  
Sprague Dawley ◽  
Total Dna

ABSTRACT Sixty female Sprague-Dawley-Rolfsmeyer rats were divided equally into three groups, twenty in each group at 25 days of age. One half of each group serving as controls received saline, the other half received 100 ftg melatonin/100 g body weight at 25, 35. and 45 days of age, for 10 days. They were killed 24 hours after the last injection. Pituitaries. ovaries, uteri, adrenals and thyroids were collected and weighed. DNA determination by the method described by Webb Se Levy (1955) was used for ovaries, uteri and adrenals only. Pituitary weight was not affected much by the treatment of melatonin. Thyroid weight increased: adrenals, ovaries and uterine weight decreased gradually up to 55 days in melatonin treated group as compared to the control. Ovarian total DNA increased significantly at 35 days of age, but significantly decreased at 45 and 55 days of age in melatonin treated group as compared to the corresponding controls. No difference in total DNA in adrenals was found in melatonin treated animals as compared to control group at any age. The total DNA of the uteri increased 29 % at 35 days of age but decreased at 55 days of age by 14%. These data also show that the DNA/mg of endocrine glands dry fat free tissue decreased with increasing age suggesting a reduction in functional cells per unit weight in older animals.

scholarly journals ACUTE DERMAL TOXICITY STUDY OF ARECA CATECHU LINN. EXTRACT IN SPRAGUE-DAWLEY RATS

2016 ◽  
Vol 9 (9) ◽  
pp. 209
Author(s):  
Liza Meutia Sari ◽  
Frans D Suyatna ◽  
Gus Permana Subita ◽  
Elza Ibrahim Auerkar
Keyword(s):  
Body Weight ◽  
Aqueous Extract ◽  
Lethal Dose ◽  
Clinical Signs ◽  
Treated Group ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Dermal Toxicity ◽  
Areca Catechu

ABSTRACTObjective: Areca catechu Linn. or biji pinang is one of the most widely used psychoactive substance with several hundred million users worldwide,predominantly in Southern Asia. However, details of the dermal toxicity of A. catechu L. are still undiscovered. The objective of this study is toinvestigate the in vivo acute dermal toxicity of aqueous extract of A. catechu L. at dose 15,000 mg/kg body weight in Sprague-Dawley rats.Methods: The acute dermal toxicity of A. catechu L. nut extract was investigated in rats, as per OECD Guidelines 402 for acute toxicity protocols. Thebody weight, possibility of death, general signs, and behavior activity parameters were measured for 14 days to ascertain the median lethal dose(LD50) of the extract. At the end of the study, all the animals in all the treated group were sacrificed.Results: The LD50 was found to be >15,000 mg/kg body weight. There was significant weight increase (p<0.05) in treated group when comparedto control group. No mortality was observed during whole 14 days study period. A single dose of 15,000 mg/kg of body weight did not producetreatment-related signs of toxicity in any of animal tested.Conclusion: A single dermal dose to A. catechu L. aqueous extract had no toxic effects on mortality, clinical signs, body weight changes, and grossfindings in female rats at a dose of 15,000 mg/kg of body weight. Subsequently, the concentrate can be employed for pharmaceuticals nutrient plants.Keywords: A. catechu L., Acute dermal toxicity, LD50.

scholarly journals Diuretic activity of the bark of Eysenhardtia polystachya

2016 ◽  
Vol 11 (1) ◽  
pp. 212 ◽  
Author(s):  
Saudy Saret Pablo-Pérez ◽  
María Mirian Estévez-Carmona ◽  
María Estela Meléndez-Camargo
Keyword(s):  
Body Weight ◽  
Filtration Rate ◽  
Treated Group ◽  
Female Rats ◽  
Control Group ◽  
Electrolyte Balance ◽  
Urinary Flow ◽  
Diuretic Activity ◽  
Sodium And Potassium ◽  
Different Doses

<p class="Abstract">The aim of this study was to evaluate the diuretic activity of <em>Eysenhardtia polystachya</em> bark aqueous extract at different doses in a rat model. Different doses of <em>E. polystachya</em> (125, 250, 500 and 750 mg/kg body weight), furosemide (4 mg/kg) and vehicle were administered per os to female rats (n=6 animals per group). After 6 hours in metabolic cages, the effect on urinary flow, glomerular filtration rate and electrolyte balance of sodium and potassium were assessed in all animals. <em>E. polystachya</em> at the doses of 500 and 750 mg/kg induced diuretic activity, since markedly increased (p&lt;0.05) the urinary flow rate, similar to that of furosemide treated group. Only the dose of 750 mg/kg produced an increment in urinary excretion of sodium but not of potassium compared with control group. These findings indicate that<em> E. polystachya</em> bark-induced diuretic activity, providing evidence for its folkloric use.</p><p> </p>

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

SUBCHRONIC TOXICITY OF MALAYSIAN ACALYPHA INDICA: BIOCHEMISTRY AND HAEMATOLOGY ANALYSIS OF RAT

2016 ◽  
Vol 78 (5-5) ◽  
Author(s):  
Norazlanshah Hazali ◽  
Nurul Nadia Mohd Nazri ◽  
Muhammad Ibrahim ◽  
Mashita Masri
Keyword(s):  
Body Weight ◽  
Skin Diseases ◽  
Female Rats ◽  
Control Group ◽  
Dosage Group ◽  
Sprague Dawley ◽  
Subchronic Toxicity ◽  
High Dosage Group ◽  
Sprague Dawley Rats ◽  
Acalypha Indica

Acalypha indica is one of the medicinal plants that have been used since ages to treat various diseases such as pneumoniae, asthma and skin diseases. This study aimed to explore the subchronic toxicity effect of Acalypha indica on Sprague Dawley rats based on haematological and biochemical parameters. The extract of Acalypha indica was prepared by aqueous extraction technique. 48 Sprague Dawley rats aged 7 weeks, weighing 150-200g were randomly divided into four groups, 6 animals per gender. A control group received water vehicle while three treated groups received the extract at dosage of 100 (low dosage group), 200 (medium dosage group) and 300 (high dosage group) mg/kg body weight. The sample was administered orally by using oral gavage daily for 90 days. No sign of toxicity and mortality was recorded in all groups throughout the study. There were no significant different (p>0.05) in body weight gain, food and water intake between control and treatment group. However, there was significant different in uric acid between control and high dosage group of male and female rats but the mean were in normal range. There were also reduced in mean of urea and creatinine in all dosage group of male and urea for all dosage group of female. Statistically significant reduced in urea was recorded between control and high dosage group of male only. Other parameters showed no significant different between control and treatment groups. Therefore, Acalypha indica is safe for human consumption and might be potential in reducing kidney damage problem.

scholarly journals MODULATORY ACTIVITY OF BEE POLLEN AGAINST THE TOXICITY OF ANTITUBERCULOSIS DRUGS RIFAMPICIN AND ISONIAZID IN TESTIS OF SPRAGUE DAWLEY RATS

2017 ◽  
Vol 10 (9) ◽  
pp. 161 ◽  
Author(s):  
Umesh Bharti ◽  
Neelima R Kumar ◽  
Jaspreet Kaur
Keyword(s):  
Body Weight ◽  
Cell Loss ◽  
Treated Group ◽  
Protective Role ◽  
Seminiferous Tubules ◽  
Control Group ◽  
Sprague Dawley ◽  
Drug Induced ◽  
Antituberculosis Drugs ◽  
Bee Pollen

  Objective: The aim of this study is assessment of protective role of bee pollen in antituberculosis drug (rifampicin and isoniazid)-induced toxicity in testis of Sprague Dawley rats.Methods: Healthy rats weighing 180±20 g were selected for the study. Rats were divided into five groups, i.e., Group A (control), Group B (100 mg/kg body weight/day rifampicin-treated), Group C (rifampicin 100 mg/kg body weight and bee pollen 100 mg/kg body weight), Group D (isoniazid 50 mg/kg body/day treated), and Group E (isoniazid 50 mg/kg body weight/day with bee pollen 100 mg/kg body weight/day) serve as experimental groups.Results: Aqueous extract of bee pollen when administered along with the antituberculosis drugs (rifampicin, isoniazid) showed significant reduction in the level of malondialdehyde while the activity of superoxide dismutase, glutathione (GSH) reductase, glutathione peroxidase, glutathioneS-transferase, catalase, and GSH was elevated representing the antioxidant potential of bee pollen against the drug-treated groups. Supplementation of bee pollen significantly reduced histological changes in the testis of drug-induced groups such as smaller epithelial height, germ cell loss, and irregular seminiferous tubules to near normal.Conclusion: Bee pollen has shown the modulatory effect against damage and oxidative stress induced by antituberculosis drugs (rifampicin and isoniazid) in rat testis.

Renal response to vasopressin and indomethacin in cisplatin-treated rats

1987 ◽  
Vol 73 (4) ◽  
pp. 377-381 ◽  
Author(s):  
Christopher J. Lote ◽  
Ernest S. Harpur ◽  
Andrew Thewles ◽  
Donna J. Phipps
Keyword(s):  
Body Weight ◽  
Single Dose ◽  
Treated Group ◽  
Urine Flow ◽  
The Other ◽  
Control Group ◽  
Fischer 344 ◽  
Antidiuretic Effect ◽  
Natriuretic Effect ◽  
Observation Period

1. Cisplatin [6 mg/kg body weight, in 0.9% (w/v) NaCl] was injected intraperitoneally as a single dose to two groups of rats (Fischer 344 strain). Two further groups of rats, injected intraperitoneally with an equivalent volume of 0.9% (w/v) NaCl, were used as controls. The cisplatin-treated rats developed a pronounced polyuria which did not recover during an 18 week observation period. 2. After 21 weeks, one group of the cisplatin-treated animals received a 6 h infusion of 2.5% d-glucose. Vasopressin (60 μ-units min−1 100 g−1 body weight) was incorporated into the infusate for the final 2 h. A control group of animals received an identical infusion. One week later the other group of cisplatin-treated rats received a 6 h infusion of 0.9% (w/v) NaCl. Indomethacin was incorporated into the infusate for 15 min, at 3 h 52.5 min, to deliver a dose of 10 mg/kg body weight. A control group again received an identical infusion. 3. Cisplatin did not impair the antidiuretic effect of vasopressin, but it reduced the natriuretic effect of vasopressin, and also impaired the ability of the animals to produce concentrated urine. 4. Cisplatin did not alter basal PGE2 excretion, or the reduction in PGE2 excretion induced by indomethacin. However, the urine flow in the cisplatin-treated group did not fall after indomethacin, whereas there was a fall in urine flow in the control group.

scholarly journals Acute Toxicity Evaluation of a Crude Sap Isolated from Nypa fruticants Wurmb. in Sprague Dawley Rats

2021 ◽  
Vol 50 (3) ◽  
pp. 711-721
Author(s):  
SITI FATIMAH ROQIAH YAHAYA ◽  
NIZA SAMSUDDIN ◽  
SUHANA MAMAT ◽  
ROZITA HOD ◽  
NOR ZAMZILA ABDULLAH ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Histopathological Examination ◽  
Vital Signs ◽  
Treated Group ◽  
Female Rats ◽  
Full Blood Count ◽  
Control Group ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Significant Difference

Nypa fruticans Wurmb. (nipa palm) sap, locally known as air nira or tuak, is a sweet natural beverage in Malaysia with antioxidant potency beneficial for human health. However, nypa sap lacks scientific attention with no toxicity study has been established. Therefore, this study was performed to evaluate the acute toxicity of nypa sap in the female Sprague Dawley rats. Twenty-five female rats were randomly divided into one control group and four treated groups. Treated groups were orally administered with doses of 5, 50, 300, and 2000 mg/kg of nypa sap, while the control group had received normal saline solution. The animals’ vital signs and mortality were recorded daily at an interval of 30 min and continued up to 14 days. Their blood samples and organs were harvested for toxicity analysis to assess liver and kidney function, lipid profile, and full blood count. The acute toxicity test via measurement of the biochemical and haematological parameters had shown that there was no significant difference between the treated and control groups. However, the blood glucose level in the treated groups (at higher doses of 300 and 2000 mg/kg, respectively) was significantly decreased. A similar trend was recorded for mean corpuscular volume (MCV) albeit in the treated group of 50 mg/kg doses. Histopathological examination of the organs showed no signs of abnormality in both treated and untreated groups. Overall, the results showed that consumption of nypa sap is potentially safe with no acute toxic effect on the laboratory rat models.

Pharmacokinetics of bio-shell-silver-core nanoparticles (AgNP) in Sprague-Dawley Rats – In vivo study

2021 ◽  
Vol 09 ◽  
Author(s):  
Asra Parveen ◽  
Vijay kumar B. Malashetty ◽  
Sushruta Marla ◽  
Shanth Reddy ◽  
Sidramappa Sirsand ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Body Weight ◽  
Biomedical Applications ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Potential Toxicity ◽  
Target Organs ◽  
Sprague Dawley Rats

Background: Silver nanoparticles have been widely used in the field of nanomedicine. A comprehensive understanding of their pharmacokinetics is crucial for proper risk assessment and safe biomedical applications. Objectives: The purpose of this study was to investigate the safety of silver nanoparticles by determining its potential toxicity following 28 days administration in Sprague Dawley rats. Method: The silver nanoparticles were administered by intravenous injection at the doses of 100, 200 and 500 µg/kg body weight for 28 consecutive days. Animals in the control group were received sterile water for injection. Each group consists of 10 male and 10 female rats. Results: No treatment related effects were seen in any of the parameters monitored in rats given 100, 200 and 500 µg/kg body weight/day of silver nanoparticles. Conclusion: The study proved that the use of up to 500 µg/kg body weight biosynthesized silver nanoparticles have no toxic effect in the target organs and found safe. However, the safety of the nanoparticles might be attributed to the covering of biological moieties on nanoparticles. Hence, the biofunctionalized nanoparticles can be safely used by selecting the required size and dose in medicines and drug delivery systems.

Dosimetry and pathology of 237Np in female rats

1997 ◽  
Vol 16 (2) ◽  
pp. 89-100 ◽  
Author(s):  
W. Sontag ◽  
R. Wirth ◽  
A. Luz ◽  
E. Schäffer ◽  
V. Volf
Keyword(s):  
Body Weight ◽  
Life Span ◽  
The Body ◽  
Female Rats ◽  
Whole Body ◽  
Pathological Examination ◽  
Control Group ◽  
Sprague Dawley ◽  
Weight Group ◽  
Sprague Dawley Rats

Female Sprague-Dawley rats, 10-12-week old and weigh ing about 240 g, were injected intravenously with 237Np nitrate. In the toxicological study 77 rats served as controls and 28 rats per group received single doses of 5.2 and 26 kBq, respectively, per kg body weight. In addition, 12 rats of each injection level, sacrificed at defined points in time, were used for dosimetric studies. During the whole life-span the body weight and 237Np whole body-content of each animal were recorded. After death a detailed pathological examination was made of each animal in the cronical study. One day after injection 48% of the injected activity was in the skeleton, 9.3% in the liver, 3% in the kidneys and 4.4% in the rest of the organs. Whereas in all organs the activity decreased very fast, the half-life in the skeleton was about 1400 days. The bodyweights were comparable in the three groups, but the life span decreased from 800 days (control group) to 644 days after injection (26 kBq kg -1 body weight group). The main lesions in the female rats were mammary tumors (73%) and pituitary gland tumors (52%). With increasing activity the incidence of pituary gland tumors decreased and that of osteosarco mas increased from 1.3% (control group) to 32% (26 kBq kg-1 body weight group), whereas the remaining lesions showed no influence on the activity.

scholarly journals Anti-Obesity Effects of Aloe Vera Whole Leaf and Sitagliptin in Diabetic Rats

2020 ◽  
Vol 14 (4) ◽  
pp. 295-298
Author(s):  
Sobia Javaid ◽  
Akbar Waheed
Keyword(s):  
Body Weight ◽  
Aloe Vera ◽  
Treated Group ◽  
Similar Efficacy ◽  
Diabetic Rats ◽  
Control Group ◽  
P Value ◽  
Sprague Dawley ◽  
Mean Values ◽  
Group B

Background: Aloe Vera, a medicinal herb, has been used for centuries in therapeutics and cosmetology. Objective: To compare Antiobesity effects of Aloe Vera whole leaf with new antidiabetic drug, Sitagliptin on streptozotcin induced diabetic rats. Study Design: Randomized Control Trial. Settings: Department of Pharmacology, Islamic International Medical College, Rawalpindi in collaboration with NIH, Islamabad, Pakistan. Duration: One year from September 2019 to August 2020. Methodology: Young Sprague Dawley rats, n=40, weighing 220-250 grams were taken and randomly divided into Groups A and B. Group B was fed on high fat diet for two weeks to develop insulin resistance. After induction of diabetes, with low dose streptozotocin, Group B was subdivided into: GroupB1 (Diabetic Control), Group B2 (Aloe Vera whole Leaf treated), Group B3 (Sitagliptin treated). Body weight was measured in all rats every week to assess progress of study, and finally on completion of study (on Day 60). SPSS version 25 was applied for statistical analysis. One-way ANOVA test was used for assessing any difference in the mean values. Post-hoc Turkey analysis was done to compare inter-group mean differences. P value of <0.05 was considered significant. Results: Mean body weight of Group A was 235.50g, Group B1 272.00g, B2 249.90g and B3 248.70g respectively. Rats in each of Group B2 and Group B3 had significant reduction in body weight compared to Group B1, with no statistically significant intergroup differences in results of Group B2 and B3. Conclusion: Aloe Vera whole leaf extract significantly decreased body weight with almost similar efficacy to Sitagliptin in diabetic rats.

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