Multigenerational and transgenerational effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin exposure on ovarian reserve and follicular development through AMH/AMHR2 pathway in adult female rats

Background: Acupuncture and moxibustion have been proven to be conducive to improving the ovarian reserve. However, the mechanism of pre-moxibustion on Tripterygium glycosides (TG)-induced ovarian damage has not been previously reported. Method: Female rats were randomly divided into 5 groups: control, model (75 mg/kg TG, 14 days), preventive moxibustion 1 (PM1, receiving moxibustion for 4 weeks before TG administration), preventive moxibustion 2 (PM2, receiving moxibustion for 2 weeks before TG administration and another 2 weeks during TG administration), and preventive moxibustion 3 (PM3, receiving 4 weeks of moxibustion during TG administration). The estrous cycle of the animal was recorded after TG administration. Rats were sacrificed 14 days after TG administration. The reproductive hormones profiles in serum, ovary, and hypothalamic tissues were analyzed. Result: Pre-moxibustion could revert abnormal estrous cycles, relieve follicle damage, and improve abnormal secretion of reproductive hormones resulting from ovarian damage. However, both PM2 and PM3 were more effective than PM1. In addition, PM2 disclosed more advantages in regulating reproductive hormones abnormalities, while PM3 performed better in follicular development. Conclusion: In combination, the findings of this study suggest that pre-moxibustion is effective in protecting the ovary from damage in TG-induced ovarian damage rats. But different time points correspond to different modulation targets and mechanisms.

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Morphological Changes in the Rat Granulosa Cell Surface During Differentiation Induced by Estradiol and Gonadotropins

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100079851 ◽

1977 ◽

Vol 35 ◽

pp. 484-485

Author(s):

P. Bagavandoss ◽

JoAnne S. Richards ◽

A. Rees Midgley

Keyword(s):

Cell Surface ◽

Granulosa Cell ◽

Morphological Changes ◽

Follicular Development ◽

Female Rats ◽

Functional Changes ◽

Group 4 ◽

Group 3 ◽

Group 5 ◽

Group 2

During follicular development in the mammalian ovary, several functional changes occur in the granulosa cells in response to steroid hormones and gonadotropins (1,2). In particular, marked changes in the content of membrane-associated receptors for the gonadotropins have been observed (1).We report here scanning electron microscope observations of morphological changes that occur on the granulosa cell surface in response to the administration of estradiol, human follicle stimulating hormone (hFSH), and human chorionic gonadotropin (hCG).Immature female rats that were hypophysectcmized on day 24 of age were treated in the following manner. Group 1: control groups were injected once a day with 0.1 ml phosphate buffered saline (PBS) for 3 days; group 2: estradiol (1.5 mg/0.2 ml propylene glycol) once a day for 3 days; group 3: estradiol for 3 days followed by 2 days of hFSH (1 μg/0.1 ml) twice daily, group 4: same as in group 3; group 5: same as in group 3 with a final injection of hCG (5 IU/0.1 ml) on the fifth day.

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Gestational IV Nicotine Potentiates Cocaine-Induced Locomotor Activity in Adult Female Rats

PsycEXTRA Dataset ◽

10.1037/e617962012-324 ◽

2008 ◽

Author(s):

Steven B. Harrod

Keyword(s):

Locomotor Activity ◽

Adult Female ◽

Female Rats

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Adolescent chronic restraint stress (aCRS) elicits robust depressive-like behavior in freely cycling, adult female rats without increasing anxiety-like behaviors.

Experimental and Clinical Psychopharmacology ◽

10.1037/pha0000119 ◽

2017 ◽

Vol 25 (2) ◽

pp. 74-83 ◽

Cited By ~ 4

Author(s):

Meghan Hibicke ◽

Martha A. Graham ◽

Renée L. Hayslett

Keyword(s):

Adult Female ◽

Restraint Stress ◽

Female Rats ◽

Chronic Restraint Stress

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CORTICOSTEROID-UMSATZ UND CORTICOSTEROID-PRODUKTION BEI RATTEN UNTER DER BEHANDLUNG MIT ANABOLEN STEROIDEN

Acta Endocrinologica ◽

10.1530/acta.0.0480263 ◽

1965 ◽

Vol 48 (2) ◽

pp. 263-271 ◽

Cited By ~ 8

Author(s):

Herbert Schriefers ◽

Gerlinde Scharlau ◽

Franzis Pohl

Keyword(s):

Production Rate ◽

Adult Female ◽

Anabolic Steroids ◽

Reduction Rate ◽

Female Rats ◽

Adrenal Weight ◽

Hydrogenase Activity ◽

Anabolic Effect ◽

Liver Slices

ABSTRACT After the administration of anabolic steroids to adult female rats in daily doses of 1 mg per animal for 14 days, the following parameters were investigated: the rate of the Δ4-5α-hydrogenase-catalyzed cortisone reduction in liver slices and microsomal fractions, the adrenal weight and the in vitro corticosterone production rate. Among the steroids tested, only 17α-methyl-testosterone and 17α-ethyl-19-nor-testosterone were effective in lowering significantly cortisone reduction rate by liver slices with concomitant decreases in microsomal Δ4-5α-hydrogenase-activity. Testosterone, 19-nor-testosterone, 17α-ethinyl-19-nor-testosterone, 17α-methyl-17β-hydroxy-androsta-1,4-dien-3-one and 1-methyl-17β-hydroxy-androst-1-en-3-one were ineffective or only slightly effective. Adrenal weight and absolute corticosterone production rate (μg/60 min per animal) were decreased after treatment with 17α-methyl-testosterone, 17α-ethyl-19-nor-testosterone and 1-methyl-17β-hydroxy-androst-1-en-3-one. Corticosterone production was decreased with 17α-ethinyl-19-nor-testosterone in spite of an unchanged adrenal weight. The relative corticosterone production rate (μg/60 min · 100 mg adrenal) was in any cases unaffected. According to these results there exists – with the exception of 17α-ethinyl-19-nor-testosterone – a strict parallelism between corticosteroid turnover and corticosterone production rate: unchanged turnover is correlated with unchanged corticosterone production rate, while a decreased turnover is correlated with decreased adrenal activity. The protein-anabolic effect of certain anabolic steroids may be partly due to an anti-catabolic action of these compounds resulting from a decreased corticosteroid inactivation and production rate. Possible mechanisms by which anabolic steroids may affect corticosteroid-balance are discussed.

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THE HYPOTHALAMUS AND PROPYLTHIOURACIL-INDUCED GOITRE IN THE RAT

Acta Endocrinologica ◽

10.1530/acta.0.0420254 ◽

1963 ◽

Vol 42 (2) ◽

pp. 254-262 ◽

Cited By ~ 2

Author(s):

J. J. van der Werff ten Bosch ◽

H. E. Swanson

Keyword(s):

Steady State ◽

Thyroid Hormone ◽

Adult Female ◽

Normal Diet ◽

Anterior Hypothalamus ◽

Female Rats ◽

Intact Rats

ABSTRACT Adult female rats were given a normal diet, or a diet which contained 0.15% propylthiouracil. At the beginning of the experiment one half of the rats were left intact, whilst the others received an electrolytic basal midline lesion in the anterior hypothalamus. Of each of the four groups of rats, one half was killed after 14 days, the others after 28 days. It was found (both after 14 and after 28 days) that the presence of a lesion reduced the thyroid weight to approximately 75% of the value in intact rats on the same diet, which might be normal or contain propylthiouracil. Propylthiouracil caused thyroid enlargement (to 278% after 14 days and 352–360% after 28 days) in intact rats as compared with intact rats on a normal diet, and in lesioned rats as compared with lesioned rats on a normal diet. It is concluded that lesions cause a lowered steady state of the thyroid-pituitary feed-back system, but that this system responds normally to the alteration of the steady state caused by the propylthiouracil-induced block in thyroid hormone output.

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BEFUNDE AM GENITALTRAKTUS DER RATTE NACH CORTICOTROPIN-INJECTION UND IHRE DEUTUNG UNTER BERÜCKSICHTIGUNG DES ZELLBILDES DER ADENOHYPOPHYSE

Acta Endocrinologica ◽

10.1530/acta.0.xxxii0167 ◽

1959 ◽

Vol XXXII (II) ◽

pp. 167-176 ◽

Cited By ~ 1

Author(s):

Walter Schätzle

Keyword(s):

Adult Female ◽

Single Injection ◽

Anterior Lobe ◽

Vaginal Epithelium ◽

Female Rats ◽

Normal Adult ◽

List Type

ABSTRACT In normal adult female rats a single injection of 5 IU corticotrophin was followed by a retention of glucoproteid material in the anterior lobe of the hypophysis and by impairment of the luteinization. In spayed adult female rats the same corticotrophin administration caused stratification and mucification of the vaginal epithelium.

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Kisspeptin level in the aging ovary is regulated by the sympathetic nervous system

Journal of Endocrinology ◽

10.1530/joe-16-0181 ◽

2017 ◽

Vol 232 (1) ◽

pp. 97-105 ◽

Cited By ~ 12

Author(s):

Daniela Fernandois ◽

Gonzalo Cruz ◽

Eun Kyung Na ◽

Hernán E Lara ◽

Alfonso H Paredes

Keyword(s):

Adrenergic Receptor ◽

Follicular Development ◽

Sympathetic Nerves ◽

Female Rats ◽

Reproductive Aging ◽

Beta Adrenergic Receptor ◽

Beta Adrenergic ◽

Primordial Follicles ◽

Follicular Cyst

Previous work has demonstrated that the increase in the activity of sympathetic nerves, which occurs during the subfertility period in female rats, causes an increase in follicular cyst development and impairs follicular development. In addition, the increase in ovarian sympathetic activity of aged rats correlates with an increased expression of kisspeptin (KISS1) in the ovary. This increase in KISS1 could participate in the decrease in follicular development that occurs during the subfertility period. We aimed to determine whether the blockade of ovarian sympathetic tone prevents the increase in KISS1 expression during reproductive aging and improves follicular development. We performed 2 experiments in rats: (1) an in vivo blockade of beta-adrenergic receptor with propranolol (5.0 mg/kg) and (2) an ovarian surgical denervation to modulate the sympathetic system at these ages. We measured Kisspeptin and follicle-stimulating hormone receptor (FSHR) mRNA and protein levels by qRT-PCR and western blot and counted primordial, primary and secondary follicles at 8, 10 and 12 months of age. The results showed that ovarian KISS1 decreased but FSHR increased after both propranolol administration and the surgical denervation in rats of 8, 10 and 12 months of age. An increase in FSHR was related to an increase in the number of smaller secondary follicles and a decreased number of primordial follicles at 8, 10 and 12 months of age. These results suggest that intraovarian KISS1 is regulated by sympathetic nerves via a beta-adrenergic receptor and participates locally in ovarian follicular development in reproductive aging.

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