leiomyoma/نقص الأكسجة

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Discrepancy of uterine leiomyoma and myometrium to hypoxia-induced endoplasmic reticulum stress after uterine occlusion therapy accounts for therapeutic effect.

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OBJECTIVE Uterine artery occlusion (UAO) is a promising method for the treatment of leiomyoma. This study is intended to demonstrate the discrepancy of ER stress-induced apoptosis in leiomyoma and myometrium as a result of UAO therapy. METHODS Primary cultured leiomyoma and myometrial cells were

Hypoxia Induces Hypoxia-Inducible Factor 1α and Potential HIF-Responsive Gene Expression in Uterine Leiomyoma.

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Uterine leiomyoma is characterized by abundant extracellular matrix and broad avascular areas, both constantly resulting in hypoxia, suggesting some hypoxia-induced response function. Here, we examined whether hypoxia-inducible factor 1α (HIF-1α)- mediated hypoxic response function in uterine

Lack of hypoxic response in uterine leiomyomas despite severe tissue hypoxia.

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Hypoxia is now established as a key factor influencing the pathophysiology of malignant growth. Among other effects, hypoxia modulates the expression of a multitude of genes through the induction of hypoxia-inducible transcription factors. This differential gene expression favors angiogenesis, cell

Uterine fibroids are characterized by an impaired antioxidant cellular system: potential role of hypoxia in the pathophysiology of uterine fibroids.

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OBJECTIVE Fibroids are the most common smooth muscle overgrowth in women. This study determined the expression and the effect of hypoxia on two potent antioxidant enzymes, superoxide dismutase (SOD) and catalase (CAT) on human fibroid cells. METHODS Immortalized human leiomyoma (fibroid) and

Hypoxia: the driving force of uterine myometrial stem cells differentiation into leiomyoma cells.

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We propose that stem cells that display specific phenotypic and functional characteristics exist in human uterine myometrium. Under hypoxic circumstances, estrogen signaling pathways in certain myometrial stem cells are aberrantly activated, which leads to continuous differentiation of this portion

Inhibition of WNT/β-catenin signaling under serum starvation and hypoxia induces adipocytic transdifferentiation in human leiomyoma cells.

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Fatty metamorphosis is an uncommon alteration in uterine leiomyoma (i.e., lipoleiomyoma), and the pathogenetic mechanisms underlying this phenomenon remain poorly understood. Because a conditional deletion of β-catenin, a major transducer of the canonical Wingless/integrated (WNT) pathway, in the

[Ultrastructural changes in the capillaries of the placenta during hypoxia].

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To investigate early stages of hypoxia, the authors studied fetal capillaries of the terminal cilia in the placenta of women without clinical manifestations of fetal hypoxia in such pathologic states as protracted labor, uterine fibromyoma, late toxicosis of pregnancy. The capillaries are shown to

[A Culture System Similar to the Embryonal Microenvironment Supports Transdifferentiation in Human Leiomyoma Cells].

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Current research on stem cells and regenerative medicine indicates new perspectives on the relationship between differentiation and gene information. Induced pluripotent stem (iPS) cells need the artificial gene expression of the somatic cell, which is related to initialization. Paradoxically, that

The anti-diabetic drug metformin inhibits vascular endothelial growth factor expression via the mammalian target of rapamycin complex 1/hypoxia-inducible factor-1α signaling pathway in ELT-3 cells.

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The aim of this study was to elucidate whether metformin can regulate the expression of vascular endothelial growth factor (VEGF) in rat-derived uterine leiomyoma cells (ELT-3 cells). In vitro studies were conducted using ELT-3 cells. Under normoxic conditions, metformin suppressed VEGF protein

Deep vein thrombosis and pulmonary embolism in a patient affected by uterine fibroids: clinical case.

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A 51 year old woman was admitted for night dyspneic attacks and fainting. When hospitalised the patient reported in the previous 10 days dry cough, edema and pain (left leg). The woman's medical history did not show any risk factors for vein thromboembolism, d-dimer dosage appeared increased and

Comparative expression of thioredoxin-1 in uterine leiomyomas and myometrium.

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Uterine leiomyomas are benign tumors that develop from smooth muscle cells (SMCs). The reactive oxygen species (ROS) have been shown to be involved in the signaling pathways that stimulate proliferation of a variety of cell types. Thioredoxin-1 (TRX-1) is a redox-regulating protein, which is

Oxidative stress: a key regulator of leiomyoma cell survival.

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To determine the effects of attenuating oxidative stress with the use of dichloroacetate (DCA) on the expression of key redox enzymes myeloperoxidase (MPO) and inducible nitric oxide synthase (iNOS) as well as on apoptosis. Prospective experimental study. University medical center. Cells established

Calcium concentration response to uterine ischemia: a comparison of uterine fibroid cells and adjacent normal myometrial cells.

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OBJECTIVE Uterine artery occlusion by laparoscopy (UAOL) has been used for the treatment of uterine fibroids and beneficial effects to patients have been shown in clinical studies since 2000. Fibroid cells are more susceptible to apoptosis than myometrial cells under hypoxic conditions, but the

Two cases of acute ischemic stroke associated with iron deficiency anemia due to bleeding from uterine fibroids in middle-aged women.

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We herein report two cases of acute ischemic stroke associated with iron deficiency anemia (IDA) due to bleeding from uterine fibroids. Anemia is not generally recognized as a risk factor for stroke. The physiological mechanisms that may factor in the development of ischemic stroke in patients with

Secreted frizzled related protein 1 is overexpressed in uterine leiomyomas, associated with a high estrogenic environment and unrelated to proliferative activity.

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Secreted frizzled related protein 1 (sFRP1) is a modulator of Wnt signaling. Recently, aberrations of Wnt signaling were reported to be involved in the pathology of various human neoplasms. We investigated the expression and function of sFRP1 in uterine leiomyomas. Secreted FRP1 expression was

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