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Melatonin, the pineal gland hormone, plays a crucial role in regulation of neuroendocrine and defensive functions, free radicals neutralization, and suppresses angiogenesis, proliferation and cancer. The purpose of designing our study is to assess the effect of estradiol benzoate and its combination with melatonin on uteri of female albino rats. For 4 weeks, the present study was conducted on thirty six female rats separated into 3 groups: Control group (rats received the vehicle), EB group (rats were treated by estradiol benzoate (600 μg/kg intramuscular) for induction of endometrial hyperplasia), and EB+Mel group (rats were treated with estradiol benzoate (600 μg/kg) plus melatonin (50 µg/ml) added to drinking water. Melatonin administration reduced estradiol benzoate-induced endometrial hyperplasia and prevented the occurrence of atypia associated with a significant reduction in lipid peroxide level and NF-κB mRNA and a significant rise in immune-expression of caspase-3, interleukin-2 (IL-2) mRNA and total antioxidant levels in uterine tissues. The results demonstrated that melatonin reduced estradiol benzoate action on the endometrium.
This article was published in the following journal.
Name: General physiology and biophysics
Estradiol and progesterone bioavailability for moderate to severe vasomotor symptom treatment and endometrial protection with the continuous-combined regimen of TX-001HR (oral estradiol and progesterone capsules).
In the REPLENISH trial, women receiving TX-001HR-an oral, softgel capsule, combining 17β-estradiol (E2) and progesterone (E2 mg/P4 mg 1/100, 0.5/100), had significantly improved vasomotor symptoms, w...
Endometrial carcinoma is the most common gynaecologic malignancy in the world and develops through preliminary stages of endometrial hyperplasia. Atypical endometrial hyperplasia ...
Endometrial cancer is the most common gynaecological malignancy amongst the developed world. The incidence of its precursor, endometrial hyperplasia, is estimated to be more than three times greater, ...
Endometrial cancer is diagnosed by endometrial biopsy, imaging and hysteroscopy, but it is sometimes difficult to find small lesions. 5-aminolevulinic acid (5ALA) forms protoporphyrin IX, which accumu...
Several markers have been studied to predict the responsiveness of endometrial hyperplasia (EH) and early endometrial cancer (EEC) to progestin therapy. PTEN has played a major role in this field, alt...
We will investigate the safety and pharmacokinetics of melatonin, when administered rectally, intravesically, vaginally and transdermally. We will recruit 10 healthy female volunteers. The...
Low oxygen at altitude causes pauses in breathing during sleep, called central sleep apnea. Central sleep apnea causes repeated awakenings and poor sleep. Low oxygen itself and the induced...
The primary focus of this five-year study will be to optimize the melatonin dosing regimen for synchronizing the body clocks of blind children to the 24-hour day.
Atypical antipsychotic medications, such as olanzapine, cause metabolic side effects, including weight gain, extra fat around the middle of the body, high blood sugar, and high cholesterol...
The purpose of this study is to learn how a hormone called estradiol (estrogen) affects the levels of luteinizing hormone (LH) and follicle stimulating hormone (FSH) in women with polycyst...
Benign proliferation of the ENDOMETRIUM in the UTERUS. Endometrial hyperplasia is classified by its cytology and glandular tissue. There are simple, complex (adenomatous without atypia), and atypical hyperplasia representing also the ascending risk of becoming malignant.
Steroidal compounds related to ESTRADIOL, the major mammalian female sex hormone. Estradiol congeners include important estradiol precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with estrogenic activities.
A biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.
A family of G-protein-coupled receptors that are specific for and mediate the effects of MELATONIN. Activation of melatonin receptors has been associated with decreased intracellular CYCLIC AMP and increased hydrolysis of PHOSPHOINOSITIDES.
Neoplasms of the endometrial stroma that sometimes involve the MYOMETRIUM. These tumors contain cells that may closely or remotely resemble the normal stromal cells. Endometrial stromal neoplasms are divided into three categories: (1) benign stromal nodules; (2) low-grade stromal sarcoma, or endolymphatic stromal myosis; and (3) malignant endometrial stromal sarcoma (SARCOMA, ENDOMETRIAL STROMAL).
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