scholarly journals Dietary Supplementation of Female Rats with Elk Velvet Antler Improves Physical and Neurological Development of Offspring

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Jiongran Chen ◽  
Murray R. Woodbury ◽  
Jane Alcorn ◽  
Ali Honaramooz
Keyword(s):  
Acoustic Startle ◽  
Female Rats ◽  
Neurological Development ◽  
Traditional Use ◽  
Velvet Antler ◽  
Developmental Parameters ◽  
Female Wistar Rats ◽  
Pregnancy And Lactation ◽  
Potential Benefits ◽  
Righting Reflex

Elk velvet antler (EVA) has a traditional use for promotion of general health. However, evidence of EVA effects at different lifestages is generally lacking. This paper investigated the effects of long-term maternal dietary EVA supplementation on physical, reflexological and neurological development of rat offspring. Female Wistar rats were fed standard chow or chow containing 10% EVA for 90 days prior to mating and throughout pregnancy and lactation. In each dietary group, 56 male and 56 female pups were assessed for physical, neuromotor, and reflexologic development postnatally. Among the examined physical developmental parameters, incisor eruption occurred one day earlier in pups nursing dams receiving EVA. Among neuromotor developmental parameters, duration of supported and unsupported standing was longer for pups nursing EVA supplemented dams. Acquisition of neurological reflex parameters (righting reflex, negative geotaxis, cliff avoidance acoustic startle) occurred earlier in pups nursing dams receiving EVA. Longterm maternal EVA supplementation prior to and during pregnancy and lactation accelerated certain physical, reflexologic, and neuromotor developmental milestones and caused no discernible adverse effects on developing offspring. The potential benefits of maternal EVA supplementation on postnatal development warrants further investigation to determine whether EVA can be endorsed for the promotion of maternal and child health.

scholarly journals Pharmacological Evaluation and Antifertility Activity ofJatropha gossypifoliain Rats

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Sachin Jain ◽  
Gajendra Pratap Choudhary ◽  
Dinesh Kumar Jain
Keyword(s):  
Ethinyl Estradiol ◽  
Estrogenic Activity ◽  
Ethanolic Extract ◽  
Vehicle Control ◽  
Female Rats ◽  
Control Group ◽  
Traditional Use ◽  
Vehicle Control Group ◽  
Jatropha Gossypifolia ◽  
Female Wistar Rats

Objectives. Pharmacological and antifertility activity evaluation ofJatropha gossypifoliain rats.Methods. The antifertility activity of the extracts ofJatropha gossypifoliain rats was evaluated using two experimental animal models. Estrogenic activity was evaluated in immature female rats using ethinyl estradiol as standard. Anti-implantation and early abortifacient activity was performed in female Wistar rats by determining the number of implantations and implantation resorptions.Results. In estrogenic activity evaluations, the ethanolic and aqueous extracts offered significant estrogen-like activity at 400 mg kg−1p.o. by increasing the uterine weight compared to vehicle control group. Ethanolic extract (400 mg kg−1, p.o.) treatment significantly decreased the number of implants and increased the number of resorptions compared to vehicle control group.Conclusion. The results of the present study provide the evidence of the anti-fertility activity ofJatropha gossypifoliaas claimed in the traditional use. The results are consistent with the literature reports related to the antifertility effect of flower extracts ofJatropha gossypifolia.

The effect of pregnancy and lactation on bone mineral density in fluoride-exposed rats

2006 ◽  
Vol 22 (5) ◽  
pp. 217-222 ◽  
Author(s):  
Mustafa Yildiz ◽  
Baha Oral
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Spring Water ◽  
Female Rats ◽  
Male Rat ◽  
Mineral Density ◽  
Dental And Skeletal Fluorosis ◽  
Female Wistar Rats ◽  
Pregnancy And Lactation ◽  
Excessive Intake

Fluoride increases metabolic turnover of the bone in favour of bone formation. Excessive intake of fluoride may lead to pathological changes in teeth and bones: dental and skeletal fluorosis. In this study, we investigated the effect of pregnancy and lactation on bone mineral density (BMD) in fluoride-exposed rats. Female Wistar rats were given commercially available spring water with 100 ppm fluoride (N-8), or without addition (N-8) for 18 weeks. At 16 weeks of age, four female rats and one male rat were kept in a cage for 5 days; all females were successfully impregnated. BMD was measured at 16 weeks of age, on the first day postpartum, and at the end of lactation. Spinal BMD was significantly higher in fluoride-exposed rats than control (P≤0.05), but there were no differences in femoral BMD (P-0.670). During pregnancy, spinal BMD and femoral BMD were not significantly changed in fluoride-exposed rats, whereas BMD of the spine was significantly decreased in the control rats (P-0.013), but not in the femur. During lactation, BMD was significantly decreased at the two regions compared to initial values (P≤0.05) in both groups. This study shows that pregnancy has no effect on bone, but lactation has a decreasing effect on BMD in fluoride-exposed rats.

Evaluation of the Reproductive Toxicity and Embryotoxicity of Insulin Glargine (LANTUS) in Rats and Rabbits

2002 ◽  
Vol 21 (3) ◽  
pp. 181-189 ◽  
Author(s):  
Thomas Hofmann ◽  
Georg Horstmann ◽  
Ingo Stammberger
Keyword(s):  
Insulin Glargine ◽  
Reproductive Toxicity ◽  
Female Rats ◽  
Nph Insulin ◽  
Duration Of Action ◽  
Prolonged Duration ◽  
Female Wistar Rats ◽  
Pregnancy And Lactation ◽  
High Doses ◽  
Premature Dropout

Insulin glargine (LANTUS) is a new insulin analog that has a prolonged duration of action with no pronounced peak of activity, rendering it an ideal basal insulin for the treatment of diabetes. The aim of these studies was to assess the reproductive and embryotoxicity of insulin glargine. Reproductive toxicity was assessed in 25 male and 25 female Wistar rats per group treated with a daily subcutaneous injection of control; 1 IU/kg, 3 IU/kg, and 10 IU/kg insulin glargine; or 3 IU/kg NPH insulin in the premating and mating periods, and throughout pregnancy and lactation in the females. Embryotoxicity was assessed in 20 female rats per group injected with daily subcutaneous doses of control; 2 IU/kg, 6.3 IU/kg, and 20 IU/kg insulin glargine; or 6.3 IU/kg NPH insulin from the 7th to 18th day of pregnancy. Embryotoxicity was also assessed in 20 female rabbits per group treated with 0 IU/kg, 0.5 IU/kg, 1 IU/kg, and 2 IU/kg insulin glargine, or 1 IU/kg NPH insulin from the 6th to 18th day of pregnancy. The data demonstrated that, with the exception of toxicologic effects induced by hypoglycemia in response to high doses of insulin glargine and NPH insulin (including the premature dropout of female rats in the reproductive toxicity study, and increased incidence of abortions, early intrauterine deaths, and single anomalies in the rabbit embryotoxicity study), insulin glargine had no effects on reproduction, embryofetal development, and postnatal development in rats. Maternal and embryofetal toxicity in rabbits treated with middle and high doses of insulin glargine was related to the hypoglycemic effect of insulin.

NEW DATA CONCERNING THE ROLE PLAYED BY PROGESTERONE IN THE CONTROL OF FOLLICULAR GROWTH IN THE RAT

1974 ◽  
Vol 75 (3) ◽  
pp. 569-578 ◽  
Author(s):  
G. Buffler ◽  
S. Roser
Keyword(s):  
Wistar Rats ◽  
Venous Blood ◽  
Oestrous Cycle ◽  
Female Rats ◽  
Cycle Duration ◽  
Follicular Growth ◽  
The Third ◽  
Female Wistar Rats

ABSTRACT The mechanisms involved in the prolongation of the oestrous cycle following LH administration were studied in 4-day cyclic female Wistar rats. In females injected with LH on the morning of dioestrus I there was an increase in ovarian venous blood progesterone as compared with non-injected animals. In both LH-treated females, and those injected with progesterone on the morning of dioestrus I, a slowing up in follicular growth was observed from the afternoon of dioestrus I. The size of follicles greater than 400 urn present in LH or progesterone injected animals on the third day of cycle was similar to the size reached by the same range of follicles in non-injected animals on the second day of the cycle. Hence, the increase in endogenous ovarian progesterone elicited by LH was considered as the cause of the slowing up of follicular growth and therefore of the lengthening of the oestrous cycle duration in female rats injected with LH at the beginning of 4-day cycle.

scholarly journals Folic Acid Affects Iron Status in Female Rats with Deficiency of These Micronutrients

2019 ◽  
Vol 195 (2) ◽  
pp. 551-558 ◽  
Author(s):  
Joanna Suliburska ◽  
Katarzyna Skrypnik ◽  
Agata Chmurzyńska
Keyword(s):  
Folic Acid ◽  
Iron Status ◽  
Iron Concentration ◽  
Folic Acid Supplementation ◽  
Female Rats ◽  
Control Group ◽  
Standard Diet ◽  
Study Group ◽  
Female Wistar Rats ◽  
Iron And Folic Acid

Abstract Although simultaneous supplementation with iron and folic acid is justified, the potential interactions between these micronutrients are unknown. The aim of this study was to determine the effects of oral iron and folic acid, administered together or separately, on iron concentration in tissues in rats with a deficiency of both these micronutrients. In the first stage of the experiment (28 days), 150 8-week-old female Wistar rats were randomly assigned to a control group (C; n = 30) fed the standard diet and to a study group (n = 120) fed a diet deficit in iron and folate. The study group was then randomly divided to four groups: D group fed a deficit diet, FE group fed a deficit diet with iron gluconate, the FOL group fed a deficit diet with folate acid, and the FEFOL group fed a deficit diet with iron gluconate and folate acid. After 2, 10, and 21 days of supplementation, ten animals from each group were killed. Morphological parameters were measured in whole blood. Iron concentration was assayed in serum, liver, spleen, pancreas, heart, and kidneys. Folic acid supplementation more significantly decreased iron concentrations in the pancreas and spleen than in the D group after 10 and 21 days of supplementation. Moreover, the combination of iron with folic acid markedly decreased iron levels in the liver and spleen, in comparison with iron alone, after 10 and 21 days of the experiment. In conclusion, folic acid affects iron status in female rats deficient in these micronutrients in moderate and long-term supplementation.

Hypothalamo-pituitary regulation of the c-myc gene in rat liver

1990 ◽  
Vol 5 (3) ◽  
pp. 267-274 ◽  
Author(s):  
I. Porsch Hällstöm ◽  
J.-Å. Gustafsson ◽  
A. Blanck
Keyword(s):  
Rat Liver ◽  
Female Rats ◽  
Male Rats ◽  
Female Rat ◽  
Continuous Administration ◽  
Gh Secretion ◽  
Cell Proliferation And Differentiation ◽  
Proliferation And Differentiation ◽  
Female Wistar Rats ◽  
Myc Gene

ABSTRACT Expression of the c-myc gene was studied in the livers of male and female Wistar rats. Furthermore, the effects on hepatic c-myc expression of neonatal and adult castration, with or without testosterone supplementation, as well as of continuous administration of GH to intact males, were analysed. Expression of c-myc was low in 6-day-old animals of both sexes, reached a maximum at 35 days of age and declined to the level of adult animals at 70 days. In prepubertal animals, expression was higher in females, but was higher in males after the onset of puberty, the postpubertal female rat liver exhibiting 50–70% of the expression in males. Treatment of adult male rats with bovine GH in osmotic minipumps for 1 week reduced c-myc expression to the level of female rats. Castration, both neonatally and of adults, also feminized hepatic c-myc expression. Testosterone supplementation of the castrated animals increased the expression towards the level in sham-operated controls. These results indicate that the c-myc gene is regulated by the hypothalamo-pituitary-liver axis via the sex-differentiated pattern of GH secretion, in analogy with other sex-differentiated hepatic functions, such as metabolism of steroids and xenobiotics. Neuroendocrine regulation of a gene such as c-myc, which is involved in the control of cell proliferation and differentiation, represents another aspect of the complex influence of GH on various somatic functions.

scholarly journals Are skeletally mature female rats a suitable model to study osteoporosis?

2012 ◽  
Vol 56 (4) ◽  
pp. 259-264 ◽  
Author(s):  
Claudia Cardoso Netto ◽  
Vivian Cristine Correia Vieira ◽  
Lizanka Paola Figueiredo Marinheiro ◽  
Sherry Agellon ◽  
Hope Weiler ◽  
...  
Keyword(s):  
Bone Metabolism ◽  
Type I Collagen ◽  
Biomechanical Properties ◽  
Mature Female ◽  
Female Rats ◽  
Suitable Model ◽  
Type I ◽  
Age Related ◽  
Female Wistar Rats ◽  
Old Rats

OBJECTIVE: To analyze if female Wistar rats at 56 weeks of age are a suitable model to study osteoporosis. MATERIALS AND METHODS: Female rats with 6 and 36 weeks of age (n = 8 per group) were kept over a 20-week period and fed a diet for mature rodents complete in terms of Ca, phosphorous, and vitamin D. Excised femurs were measured for bone mass using dual-energy x-ray absorptiometry, morphometry, and biomechanical properties. The following serum mar-kers of bone metabolism were analyzed: parathyroid hormone (PTH), osteocalcin (OC), osteoprotegerin (OPG), receptor activator of nuclear factor Κappa B ligand (RANKL), C-terminal peptides of type I collagen (CTX-I), total calcium, and alkaline phosphatase (ALP) activity. RESULTS: Rats at 56 weeks of age showed important bone metabolism differences when compared with the younger group, such as, highest diaphysis energy to failure, lowest levels of OC, CTX-I, and ALP, and elevated PTH, even with adequate dietary Ca. CONCLUSION: Rats at 26-week-old rats may be too young to study age-related bone loss, whereas the 56-week-old rats may be good models to represent the early stages of age-related changes in bone metabolism.

scholarly journals ADHD-like behaviour in the offspring of female rats exposed to low chlorpyrifos doses before pregnancy / Ponašanje nalik ADHD-u u potomaka ženki štakora izloženih niskim dozama klorpirifosa prije trudnoće

2015 ◽  
Vol 66 (2) ◽  
pp. 121-127 ◽  
Author(s):  
Sofia Grabovska ◽  
Yuriу Salyha
Keyword(s):  
Cognitive Abilities ◽  
Memory Performance ◽  
Female Rats ◽  
Long Term Memory ◽  
Dark Light ◽  
Female Wistar Rats ◽  
Important Argument ◽  
Extrapolation Escape Test ◽  
Short And Long Term ◽  
Behavioural Tests

Abstract The aim of this study was to investigate how chronic low-dose chlorpyrifos exposure of female Wistar rats before and during pregnancy affects behavioural parameters in their offspring. Four months before pregnancy, we exposed three groups of rats to chlorpyrifos doses of 5, 10, and 15 mg kg-1 body weight every day for 30 days, whereas one group received a single 30 mg kg-1 dose on gestational day 6. When the offspring of the exposed rats grew up, we studied their anxiety rate, motor activity, and cognitive abilities using the respective behavioural tests: open field test, dark/light box, and the extrapolation escape test. The offspring of rats exposed before pregnancy had significantly higher activity rate than controls, and even showed motor agitation and hyperactivity signs. The offspring of rats exposed to the single dose had difficulties solving the extrapolation escape test and showed poorer short- and long-term memory performance. This confirmed that even pre-pregnancy chlorpyrifos exposure can cause neurobehavioral consequences in offspring. Even though the mechanisms of the observed changes remain unclear and need further investigation, these data seem alarming and may serve as an important argument for revising the terms of safe pesticide use

scholarly journals Pharmacological correction of pathological changes in the viable offspring of rats, caused by cytostatic impact at the stage of progenesis

2019 ◽  
Vol 18 (1) ◽  
pp. 79-85
Author(s):  
T. G. Borovskaya ◽  
M. E. Poluektova ◽  
А. V. Vychuzhanina ◽  
Yu. А. Shchemerovа ◽  
V. E. Goldberg
Keyword(s):  
Female Rats ◽  
Control Group ◽  
Cytostatic Drug ◽  
Pathological Changes ◽  
Group Iii ◽  
Group I ◽  
Child Bearing ◽  
Female Wistar Rats ◽  
Reproductive Aged Women ◽  
Risk Of Cancer

Background. The number of reproductive-aged women with cancer, who desire child bearing, has increased with improvements in cancer detection and treatment. Cancer treatments have the potential to cause germline mutations that might increase the risk of cancer in the progeny of cancer patients. the aim of the study was to assess the feasibility of reducing the long-term side effects of Etoposide on the progeny of rats using Glutaxim. material and methods. Forty-five white outbred female Wistar rats, 2.5-month-old, were divided into 3 groups. Group I consisted of 15 intact rats. Group II comprised 15 rats treated with cytostatic drug (the control group). Group III consisted of 15 rats treated with Glutoxim® (Glutayil-Cysteinyl-Glycine, Pharma Vam Ltd., Russia) at a dose of 50 μg/kg 5 days before and 5 days after receiving cytostatic drug. results. An increase in the number of fetuses with external hemorrhages and pathological changes in internal organs was found in the progeny of female rats receiving Etoposide 3 months before mating. The progeny experienced a decrease in the rate of formation of sensory-motor reflexes, ability to learn and adaptive behavior. All studied parameters did not differ from background values in the progeny of female rats treated with combination of Etoposide and Glutoxim. conclusion. Glutaxim is the effective drug for correction of pathological changes in the progeny of female rats receiving cytostatic drugs.

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