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Page 1 od 31 rezultati
Novel aspects of cytokine action in porcine uterus--endometrial and myometrial production of estrone (E1) in the presence of interleukin 1beta (IL1beta), interleukin 6 (IL6) and tumor necrosis factor (TNFalpha)--in vitro study.
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Interleukin 1beta (IL-1beta), interleukin 6 (IL-6) and tumor necrosis factor alpha (TNFalpha) increased (P < 0.05) estrone (E1) release from endometrial explants of pregnant pigs on days 10 to 11 after 12 h of tissue incubation in vitro with cytokines and on days 12 to 13 after 6 h of incubation.
Estrone/17beta-estradiol conversion to, and tumor necrosis factor inhibition by, estrogen metabolites in synovial cells of patients with rheumatoid arthritis and patients with osteoarthritis.
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OBJECTIVE
The role of estrogens in rheumatoid arthritis (RA) is debated since both proinflammatory and antiinflammatory effects have been reported. Important evidence of the dual role of estrogens is conversion to various proinflammatory or antiinflammatory metabolites. This study was undertaken to
Effect of tumour necrosis factor-alpha on estrogen metabolic pathways in breast cancer cells.
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Tumor necrosis factor-alpha (TNF-α) is a proinflammatory cytokine that has been linked to breast cancer development. Estrogen metabolic pathway is also involved in breast carcinogenesis and DNA adducts formation. In this study we investigated the effect of TNF-α on the estrogen metabolic pathway in
Short-term oleoyl-estrone treatment affects capacity to manage lipids in rat adipose tissue.
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BACKGROUND
Short-term OE (oleoyl-estrone) treatment causes significant decreases in rat weight mainly due to adipose tissue loss. The aim of this work was to determine if OE treatment affects the expression of genes that regulate lipid metabolism in white adipose tissue.
RESULTS
Gene expression in
Modulation of human granulosa cell steroid production in vitro by tumor necrosis factor alpha: implications of white blood cells in culture.
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OBJECTIVE
To test the hypothesis that the macrophage cytokine, tumor necrosis factor-alpha (TNF-alpha), directly inhibits progesterone, estrone (E1), and estradiol (E2) synthesis by human granulosa cells in vitro in the presence and absence of white blood cells.
METHODS
Granulosa cells from follicle
Origins and actions of tumor necrosis factor α in postmenopausal breast cancer.
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Tumor necrosis factor α (TNFα) has many roles in both physiological and pathological states. Initially thought to cause necrosis of tumors, research has shown that in many tumor types, including breast cancer, TNFα contributes to growth and proliferation. The presence of TNFα-derived from the tumor
Sex hormone concentrations in patients with rheumatoid arthritis are not normalized during 12 weeks of anti-tumor necrosis factor therapy.
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OBJECTIVE
Androgens such as dehydroepiandrosterone sulfate (DHEAS) and testosterone are markedly lower in postmenopausal women with rheumatoid arthritis (RA) than in controls. In contrast, compared to controls, serum levels of estrogens are normal or elevated in women with RA. Since tumor necrosis
Systemic Estrone Production and Injury-Induced Sex Hormone Steroidogenesis after Severe Traumatic Brain Injury: A Prognostic Indicator of Traumatic Brain Injury-Related Mortality.
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Extensive pre-clinical studies suggest that sex steroids are neuroprotective in experimental traumatic brain injury (TBI). However, clinical trials involving sex hormone administration have not shown beneficial results, and our observational cohort studies show systemic estradiol (E2) production to
Adrenal and gonadal hormone variations during a febrile attack in a woman with tumor necrosis factor receptor-associated periodic syndrome.
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BACKGROUND
TNF-receptor-associated periodic syndrome (TRAPS) is a hereditary fever syndrome that results from mutations in the TNF-receptor superfamily 1A gene (TNFRSF1A). It is characterized by periodic fever, arthralgia, abdominal pain, myalgia, headache, and skin lesions.
OBJECTIVE
Because
Stimulation of aromatase activity in breast fibroblasts by tumor necrosis factor alpha.
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The conversion of androstenedione to estrone, the reaction mediated by the aromatase enzyme complex, may make an important contribution to the synthesis of estrogens in breast tissues. In the present study, the effect of the cytokine. TNF alpha, on aromatase activity was examined in breast
Effect of tumor necrosis factor-alpha on estrogen metabolism and endometrial cells: potential physiological and pathological relevance.
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BACKGROUND
Estrogen and its metabolites play a critical role in the pathophysiology of the endometrium. The bioavailability of estrogen and estrogen metabolites in endometrial tissues depends on the expression of enzymes involved in estrogen biosynthesis and metabolism. Substantial evidence
[Adipose tissue: a real endocrine gland synthesizing hormones and cytokines: clinical implications].
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Adipose tissue (AT) is not considered anymore as a passive depot for storing excess energy in the form of triglycerides but as an active organ secreting several hormones or adipokines. With the exception of adiponectin the serum levels of adipokines are increased in obesity. Leptin regulates food
A novel non-sulphamoylated 2-methoxyestradiol derivative causes detachment of breast cancer cells by rapid disassembly of focal adhesions.
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UNASSIGNED
2-Methoxyestradiol (2ME2) is an estradiol metabolite with well documented antiproliferative properties in many cancer cell lines. However, it is rapidly metabolised in vivo which limits its clinical application. Therefore, more stable derivatives with potentially improved clinical
Evaluation of activity of an estrogen-derivative as cardioprotector drug using an ischemia-reperfusion injury model.
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Myocardial ischemia/reperfusion injury is a serious problem involved in cardiovascular diseases. There data which indicate that some steroids induce cardioprotective effects on myocardial ischemia-reperfusion injury; however their activity and the molecular mechanism involved on myocardial
Correlation between estrogens and serum adipocytokines in premenopausal and postmenopausal women.
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OBJECTIVE
The purpose of this study was to investigate the association between serum adipocytokines (adiponectin, resistin, leptin, and tumor necrosis factor alpha [TNF-alpha]) and endogenous estrogen (estrone and estradiol) levels in healthy premenopausal and postmenopausal women.
METHODS
This
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