scholarly journals Effect of Propolis on Precocious Puberty in Female Rats

2022 ◽  
Author(s):  
Recep Polat ◽  
Erdem Çokluk ◽  
Özcan Budak ◽  
Fatıma Betül Tuncer
Keyword(s):  
Precocious Puberty ◽  
Mechanism Of Action ◽  
Breast Tissue ◽  
Endometrial Thickness ◽  
Female Rats ◽  
Control Group ◽  
Vaginal Opening ◽  
Sprague Dawley ◽  
Ki 67 ◽  
P Values

Abstract Introduction: Nutrition and exposure to various chemicals, including environmental pollution, insecticides, and plant phytoestrogens (having oestrogen-like effects), are environmental factors that affect puberty onset. We aimed to identify the effects of propolis on precocious puberty and the reproductive system in prepubertal female rats (ovary, endometrium, breast).Methods: Thirty-four 25-day-old prepubertal female Sprague-Dawley rats were included in the study. Rats were randomly divided into the propolis (n 17) and control groups (n 17). The primary endpoint was the number of rats that developed vaginal opening (It's a sign of puberty) at 12-day follow-up. In addition, the effect of propolis on ovary, uterus and breast tissue was evaluated.Results: Vaginal patency occurred earlier in the propolis group. At the same time, a greater number of rats developed vaginal opening. The number of ovarian follicles (in all follicles), endometrial thickness, and mammary gland secretory gland area were significantly higher in the propolis group than in the control group (p-values <0.001, <0.001, <0.001, respectively). In addition, Ki-67 activity in the endometrium, breast tissue and ovary was more intense in the propolis group compared to the control group (p-values <0.001, <0.001, <0.001, respectively).Conclusion: Propolis triggers precocious puberty in female rats, possibly by interacting with the oestrogen receptor. The mechanism of action of propolis should be considered before prescribing it. In addition, further studies are needed to explore the mechanism of action of propolis and to determine the component of propolis that triggers puberty.

scholarly journals The Traditional Chinese Medicine Fuyou Formula Alleviates Precocious Puberty by Inhibiting GPR54/GnRH in the Hypothalamus

2021 ◽  
Vol 11 ◽  
Author(s):  
Guo-liang Bai ◽  
Kai-li Hu ◽  
Yi Huan ◽  
Xing Wang ◽  
Lei Lei ◽  
...  
Keyword(s):  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Signaling Pathway ◽  
Precocious Puberty ◽  
Female Rats ◽  
Control Group ◽  
Group Model ◽  
Vaginal Opening ◽  
Sprague Dawley ◽  
Gene And Protein Expression

The purpose of this study was to explore the effect of the traditional Chinese medicine Fuyou formula on precocious puberty (PP). The Fy formula may exert an effect in female rats with PP and GT-7 cells through the GPR54/GnRH signaling pathway. To confirm the effect of the Fy formula on PP through the GPR54/GnRH signaling pathway, we first treated GT1-7 cells with the Fy formula and observed changes in the expression of related genes and proteins and in GnRH secretion. Then, we randomly divided young female Sprague-Dawley rats into the control group, model group, leuprorelin group and the Fy formula group. A PP model was established by injection of danazol on postnatal day 5, and the Fy formula was administered on PND15. The time of vaginal opening, the wet weights of the ovary and uterus, serum hormone levels and the expression of hypothalamic-related genes were observed. We found that the Fy formula delayed vaginal opening, decreased the wet weights and coefficients of the ovary and uterus, decreased the levels of serum hormones (E2, follicle-stimulating hormone and luteinizing hormone) and the cellular GnRH level, and downregulated the gene expression of Kiss1, GPR54 and GnRH in the hypothalamus and the gene and protein expression of GPR54 and GnRH in GT1-7 cells. In conclusion, the Fy formula may alleviate PP via the GPR54/GnRH signaling pathway.

scholarly journals Precocious Puberty and the Lin28/Let7 Pathway: The Therapeutic Effect of the Nourishing “Yin” and Purging “Fire” Traditional Chinese Medicine Mixture in a Rat Model

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Yuanyuan He ◽  
Xinghui Han ◽  
Wen Sun ◽  
Jian Yu ◽  
Amin Tamadon
Keyword(s):  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Precocious Puberty ◽  
Serum Levels ◽  
Female Rats ◽  
Control Group ◽  
Vaginal Opening ◽  
Model Group ◽  
Nourishing Yin ◽  
The Relationship

The present study aims to investigate the effects of the nourishing “Yin” and purging “Fire” Traditional Chinese Medicine (TCM) herb mixture on precocious puberty and TCM may act through hypothalamic Lin28/let7 pathway expression in the precocious puberty model rats. Meanwhile, to confirm the relationship between Lin28/let7 pathway and puberty by overexpressionLin28a,in the first part of this study, female rats were randomly allocated into untreated controls, the precocious puberty (PP) model group, the PP control group, and the PP + TCM group. Rats on postnatal day 5 were injected danazol to establish the PP model. From days 15 to 35, the rats in the TCM group were given the TCM twice daily. Vaginal opening, sex-related hormones, and body and reproductive organ weights were measured, and the expressions of hypothalamicLin28aandLin28bmRNA andlet7aandlet7bmiRNA were detected. In addition, in the second part, the effects of overexpression ofLin28aon the vaginal opening time were evaluated. In the two parts of the study, we found that, at the onset of puberty, a decrease in ovary weight, an increase in the serum levels of luteinizing hormone and progesterone, and increased expression levels of hypothalamicLin28bmRNA were observed in the PP + TCM group compared to the PP model group. The vaginal opening time was significantly delayed upon overexpression ofLin28a. Above all, the mechanism by which the TCM treats precocious puberty is thus likely to be associated with inhibition of the hypothalamic Lin28/let7 signaling pathway and our findings provide in-depth insight into the relationship between the overexpression ofLin28agene in the hypothalamus and the onset of puberty.

Comparison of streptozotocin-induced diabetes at different moments of the life of female rats for translational studies

2021 ◽  
pp. 002367722110018
Author(s):  
Yuri K Sinzato ◽  
Eduardo Klöppel ◽  
Carolina A Miranda ◽  
Verônyca G Paula ◽  
Larissa F Alves ◽  
...  
Keyword(s):  
Adult Life ◽  
Tolerance Test ◽  
Full Term ◽  
Female Rats ◽  
Lower Percentage ◽  
Control Group ◽  
Oral Glucose ◽  
Postnatal Life ◽  
Sprague Dawley ◽  
Term Pregnancy

Animal models are widely used for studying diabetes in translational research. However, methods for induction of diabetes are conflicting with regards to their efficacy, reproducibility and cost. A comparison of outcomes between the diabetic models is still unknown, especially full-term pregnancy.To understand the comparison, we analyzed the streptozotocin (STZ)-induced diabetes at three life-different moments during the neonatal period in Sprague–Dawley female rats: at the first (D1), second (D2) and fifth (D5) day of postnatal life. At adulthood (90 days; D90), the animals were submitted to an oral glucose tolerance test (OGTT) for diabetic status confirmation. The diabetic and control rats were mated and sacrificed at full-term pregnancy for different analyses. Group D1 presented a higher mortality percentage after STZ administration than groups D2 and D5. All diabetic groups presented higher blood glucose levels as compared to those of the control group, while group D5 had higher levels of glycemia compared with other groups during OGTT. The diabetic groups showed impaired reproductive outcomes compared with the control group. Group D1 had lower percentages of mated rats and D5 showed a lower percentage of a full-term pregnancy. Besides that, these two groups also showed the highest percentages of inadequate fetal weight. In summary, although all groups fulfill the diagnosis criteria for diabetes in adult life, in our investigation diabetes induced on D5 presents lower costs and higher efficacy and reproducibility for studies involving diabetes-complicated pregnancy.

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.

ADRENAL INVOLVEMENT IN THE TIMING OF PUBERTY IN FEMALE RATS: INTERACTION WITH SERUM PROLACTIN LEVELS

1978 ◽  
Vol 89 (3) ◽  
pp. 590-598 ◽  
Author(s):  
Marie C. Gelato ◽  
J. Meites ◽  
W. Wuttke
Keyword(s):  
Female Rats ◽  
Serum Prolactin ◽  
Vaginal Opening ◽  
Sprague Dawley ◽  
Intact Control ◽  
Immature Rats ◽  
Timing Of Puberty ◽  
Corticosterone Treatment ◽  
Adrenalectomized Rats ◽  
Intact Rats

ABSTRACT Female Sprague-Dawley derived rats were either sham-operated or adrenalectomized at 20 days of age. Treatment of separate groups of rats with progesterone, corticosterone or prolactin was started at 21 days of age, and was continued until the day of vaginal opening. Similarly treated rats were decapitated at 25, 29 and 33 days of age and at the day of vaginal opening and the sera were collected from each animal and assayed for prolactin, LH and FSH. All rats were decapitated between 4–6 p. m. Adrenalectomy, as previously reported, significantly delayed the day of vaginal opening. Prolactin treatment advanced the day of vaginal opening in intact rats and it restored the day of vaginal opening in adrenalectomized rats to that of intact control rats. Progesterone treatment always delayed the day of vaginal opening in intact rats. It caused an even greater delay in vaginal opening than adrenalectomy alone. Corticosterone treatment, on the other hand, was able to reverse the effect of adrenalectomy but had no effect on vaginal opening in intact rats. In intact rats serum prolactin levels rose steadily until the day of vaginal opening. Adrenalectomized and intact rats treated with progesterone had significantly decreased serum prolactin levels. However, in adrenalectomized corticosterone treated rats serum prolactin levels were significantly increased at all ages measured when compared to the untreated rats. The FSH and LH levels showed no significant changes during any of these experimental procedures. Approximately 50 % of the rats showed LH peaks on the day of vaginal opening as well as an increase in FSH. The data indicate a prolactin-adrenal interaction for the timing of the onset of puberty in immature rats, assuming that the day of vaginal opening in association with increased gonadotrophin levels is an indicator for the occurrence of puberty.

Effects of lead and/or cadmium on the distribution patterns of some essential trace elements in immature female rats

2011 ◽  
Vol 30 (12) ◽  
pp. 1914-1923 ◽  
Author(s):  
Lin Wang ◽  
Xuelei Zhou ◽  
Dubao Yang ◽  
Zhenyong Wang
Keyword(s):  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Distribution Patterns ◽  
The Body ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Inductively Coupled ◽  
Lead And Cadmium ◽  
Essential Trace Elements

Lead acetate (300 mg/L) and/or cadmium chloride (50 mg/L) were administered as drinking water to Sprague-Dawley rats for 9 weeks to investigate the effects of concurrent exposure to lead and cadmium on the distribution patterns of five essential trace elements. Inductively coupled plasma mass spectrometry was used to determine the concentrations of zinc, copper, manganese, selenium and iron in the urine at different exposure times, as well as their levels in the renal cortex and serum at the end of treatment. Compared with the control group, exposure to lead and/or cadmium resulted in a significant increase in the urinary excretion of these five elements during the experiment, whereas significant decreased levels of these elements were found in kidney and serum. In conclusion, increased urinary loss of antioxidant trace elements due to lead and/or cadmium exposure induced the deficiency of antioxidants in the body, which could result in further oxidative damage. Moreover, there was an obvious synergistic effect of lead combined with cadmium on the distribution patterns of these essential trace elements, which may be related to the severity of co-exposure to these two metals.

scholarly journals Hepatoprotective Activity of Ethanol Extract of Figs Leaves (Ficus carica L.) with SGOT & SGPT Parameters in Sprague Dawley Female Rats Induced by Paracetamol

2021 ◽  
Vol 7 (2) ◽  
pp. 110-119
Author(s):  
Muhammad Fariez Kurniawan ◽  
Herdita Nugraheny Kusuma Wardany
Keyword(s):  
Ethanol Extract ◽  
Test Dose ◽  
Hepatoprotective Activity ◽  
Positive Control ◽  
Negative Control ◽  
Ficus Carica ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Serum Glutamic Oxaloacetic Transaminase

Background: Long-term usage of paracetamol damages liver cells characterized by the increasing levels of Serum Glutamic Pyruvic Transaminase (SGPT) and Serum Glutamic Oxaloacetic Transaminase (SGOT). Figs (Ficus carica L.) leaves contain high flavonoid compounds that able to act as hepatoprotector agents which inhibited the process of liver damage. Objectives: This study aims to determine the dose characteristics and hepatoprotective activity of figs (Ficus carica L.) leaves extract. Material and Methods: The hepatoprotective activity of figs extract (Ficus carica L.) was determined by measuring SGPT & SGOT levels in rat blood. 42 rats were prepared, divided into 7 groups: normal control group, negative control given paracetamol with a dose 40 mg/200 g BW, positive control given hepamax®, base control given Na CMC, and 3 test dose groups given figs leaves extract with a dose of 40 mg/200 g BW, 80 mg BW/200 g BW and 160 mg/200 g BW. The treatment was carried out for 14 consecutive days. Paracetamol was given for 14 days, while positive control, 3 test dose groups and base control were given on day 7 to day 14.  Rats blood samples were taken through the orbital sinuses on day 1, day 5, day 10 and day 14 after treatment began. SGPT & SGOT levels were determined using spectrophotometry with analytical methods using specific SGPT & SGOT reagent kits.  Results: The results showed that the leaves extract of figs (Ficus carica L.) proved to be able to reduce the levels of SGPT & SGOT with the most potent dosage was 40 mg/200 g BW. However, the reduction of SGPT & SGOT levels were not significantly different from other treatments. Conclusions: Figs (Ficus carica L.) leaves extract showed activity as a hepatoprotective agent, based on the reduction of SGPT & SGOT levels in rat after 14 days of treatment.

scholarly journals Glucosamine Supplementation in Premating Drinking Water Improves Within-Litter Birth Weight Uniformity of Rats Partly through Modulating Hormone Metabolism and Genes Involved in Implantation

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Cuiping Feng ◽  
Taolin Yuan ◽  
Shilan Wang ◽  
Ting Liu ◽  
Shiyu Tao ◽  
...  
Keyword(s):  
Drinking Water ◽  
Birth Weight ◽  
Developmental Competence ◽  
Female Rats ◽  
Control Group ◽  
Sprague Dawley ◽  
Mucin 1 ◽  
Gene Expressions ◽  
Mortality And Morbidity ◽  
Weight Variation

Within-litter birth weight variation in multiparous animals has become a big issue due to high incidence of low birth weight neonates, which gives rise to high preweaning mortality and morbidity. Foetus with various birth weights is the outcome of diverse embryos competence which is affected by oocyte quality. Glucosamine (GlcN) has been reported to be involved in oocyte maturation; however, its effect on pregnant outcomes remains unknown. The present study was conducted to investigate the effects of premating GlcN supplementation via drinking water on within-litter birth weight variation and its underlying mechanism. Fifty eight Sprague-Dawley female rats were randomly assigned to one of two groups with normal drinking water or drinking water supplemented with 0.5 mM GlcN from six to eight weeks old. Variation of within-litter birth weight in the GlcN group was 5.55%, significantly lower compared with 8.17% in the control group. Birth weight was significantly increased in the GlcN group (2.27 ± 0.06) compared with the control group (2.08 ± 0.04). Both absolute and relative weights of the ovary at the end of GlcN treatment were higher in the GlcN group than in the control group (P<0.05). In the GlcN group, there were more successfully implanted blastocysts (13.38 ± 0.63 and 15.75 ± 0.59 in the control and treatment group, respectively) with more uniform distribution along the two uterine horns compared with the control group. Besides, gene expressions of Alk3 and Bmp2 were increased in the implantation sites, while IGF-1 and Mucin-1 were decreased significantly in rats administrated with GlcN. Maternal progesterone, estradiol, and IGF-1 concentrations on D 19.5 were significantly increased, while insulin and total cholesterol levels were significantly decreased in contrast with control dams. In summary, the administration of 0.5 mM GlcN solution before mating reduced within-litter birth weight variation, accompanied with increased fetal weight. Further investigation indicated that the improved outcome of pregnancy results at least partly from the increased ovary weights of the rats, the homogeneous embryo developmental competence, the enhanced receptivity of the uterine environment, and the adjusted maternal hormone levels.

A Recombinant Humanized Monoclonal Antibody for Treatment of Endometriosis in a Rat Model

2011 ◽  
Vol 3 (3) ◽  
pp. 143-150
Author(s):  
Hatice Işık ◽  
Ozlem Moraloglu ◽  
Sevtap Kilic ◽  
Ali Seven ◽  
Muzaffer Caydere ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Rat Model ◽  
Female Rats ◽  
Control Group ◽  
Ki 67 ◽  
Beneficial Effects ◽  
Anti Vegf ◽  
Humanized Monoclonal Antibody ◽  
Group A ◽  
Group B

Aim Angiogenesis plays an important role in the pathogenesis of endometriosis. Thus, the inhibition of angiogenesis may prevent endometriosis. Bevacizumab is a recombinant humanized monoclonal antibody against VEGF. The aim of this study is to investigate the efficacy of anti-VEGF therapy on the prophylaxis and treatment of endometriotic foci in a rat model. Methods This experimental study is prospective, randomized, and placebo-controlled. Thirty-six Wistar-Albino female rats were divided into 3 groups. Experimental endometriosis was induced by the implantation of autologous endometrial tissue. The bevacizumab administration route was intraperitoneal. Group A was the prophylaxis group; Group B was the treatment group, and Group C was the control group. The volumes of the implants as well as their VEGF and Ki-67 immunohistochemical staining are main outcome measures. Results The volumes of the lesions were smaller in Group A than Group C [P<.05]. The volumes of endometriotic foci in Group B were smaller than in Group C [P<.05]. Bevacizumab caused regression and atrophy of the endometriotic lesions. After the treatment the histopathologic and immunohistochemical scores in Group B were less than before treatment and less than the scores in Group C. Conclusions Bevacizumab treatment had a regressive effect on the endometriotic implants. As an anti-VEGF agent, bevacizumab has beneficial effects on the prophylaxis and treatment of endometriosis.

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