norepinephrine/neoplasms

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Decrease in dopamine and norepinephrine concentration in different brain regions of mice during progression of Sarcoma 180 tumour.

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The distribution and concentration of dopamine (DA) and norepinephrine (NE), the catecholamine neurotransmitters, were studied in discrete brain areas of Sarcoma 180 tumour bearing mice. With the progression of tumour, marked depletion of DA and NE concentration was observed in some brain areas

Amitriptyline administration transforms tumor necrosis factor-alpha regulation of norepinephrine release in the brain.

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The present study demonstrates that the mixed action antidepressant drug amitriptyline enhances norepinephrine (NE) release by transforming the nature of the response of neurons to both tumor necrosis factor-alpha (TNF) as well as to an alpha(2)-adrenergic agonist in an area of the central nervous

Norepinephrine transporter promotes the invasion of human colon cancer cells.

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Epidemiological studies suggested the use of antidepressants to be associated with decreased risk of colorectal cancer (CRC). However, the underlying mechanism through which this decreased risk occurs remains elusive. The norepinephrine transporter (NET) is a target of antidepressants that maintains

Norepinephrine is a more potent inhibitor of tumor necrosis factor over a range of doses than dopamine.

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In the current study, we test the hypothesis that norepinephrine has greater anti-inflammatory effects versus dopamine over a range of doses in a model of lipopolysaccharide (LPS)-stimulated cytokine release in human saphenous vein. Segments of saphenous vein were cut and separated into 1 mm x 1 mm

Comparison of the Anti-tumor Effects of Selective Serotonin Reuptake Inhibitors as Well as Serotonin and Norepinephrine Reuptake Inhibitors in Human Hepatocellular Carcinoma Cells.

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The anti-tumor effects of selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs) on several types of cancer cells have been reported. However, comparison of the anti-tumor effects of these drugs on human hepatocellular carcinoma (HepG2) cells has

Decreased norepinephrine concentration in normal tissue neighboring a malignant tumor.

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We observed in five adenocarcinomas that norepinephrine as well as nerve fibers were absent from tumor tissue. The number of nerve fibers in normal tissue neighboring the tumor was normal. In contrast, norepinephrine concentration was decreased in normal tissue immediately surrounding tumor and

Norepinephrine upregulates VEGF, IL-8, and IL-6 expression in human melanoma tumor cell lines: implications for stress-related enhancement of tumor progression.

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Studies suggest that stress can be a co-factor for the initiation and progression of cancer. The catecholamine stress hormone, norepinephrine (NE), may influence tumor progression by modulating the expression of factors implicated in angiogenesis and metastasis. The goal of this study was to examine

Increased uptake of [¹²³I]meta-iodobenzylguanidine, [¹⁸F]fluorodopamine, and [³H]norepinephrine in mouse pheochromocytoma cells and tumors after treatment with the histone deacetylase inhibitors.

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[¹³¹I]meta-iodobenzylguanidine ([¹³¹I]MIBG) is the most commonly used treatment for metastatic pheochromocytoma and paraganglioma. It enters the chromaffin cells via the membrane norepinephrine transporter; however, its success has been modest. We studied the ability of histone deacetylase (HDAC)

Radiolabeled (4-Fluoro-3-Iodobenzyl)Guanidine Improves Imaging and Targeted Radionuclide Therapy of Norepinephrine Transporter-Expressing Tumors.

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18F- or 131I-labeled (4-fluoro-3-iodobenzyl)guanidine (FIBG) has been a promising yet unattainable derivative of radioiodine-labeled meta-iodobenzylguanidine (MIBG), because of the complex radiofluorination method. In this study, we proposed a 2-step radiosynthetic method to obtain 18F-FIBG and

Kava and its Kavalactones Inhibit Norepinephrine-induced Intracellular Calcium Influx in Lung Cancer Cells.

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Kava, the extract of the roots of Piper methysticum, has been traditionally consumed in the South Pacific islands for its natural relaxing property. Epidemiological data suggests that kava consumption may reduce human cancer risk, and in vitro and in vivo models suggest

Social isolation is associated with elevated tumor norepinephrine in ovarian carcinoma patients.

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Noradrenergic pathways have been implicated in growth and progression of ovarian cancer. Intratumoral norepinephrine (NE) has been shown to increase with stress in an animal cancer model, but little is known regarding how tumor NE varies with disease stage and with biobehavioral factors in ovarian

Is norepinephrine an etiological factor in some types of cancer?

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I examine evidence that the signaling molecule norepinephrine (NE) is an etiological factor in some types of cancer. In support of this hypothesis, I cite the following 7 lines of evidence: (i) rodent studies of tumorigenesis in the context of NE manipulation; (ii) human studies of tricyclic

Norepinephrine promotes tumor microenvironment reactivity through β3-adrenoreceptors during melanoma progression.

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Stress has an emerging role in cancer and targeting stress-related β-adrenergic receptors (AR) has been proposed as a potential therapeutic approach in melanoma. Here we report that β3-AR expression correlates with melanoma aggressiveness. In addition, we highlight that β3-AR expression is not only

Preclinical assessment of strategies for enhancement of metaiodobenzylguanidine therapy of neuroendocrine tumors.

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By virtue of its high affinity for the norepinephrine transporter (NET), [(131)I]metaiodobenzylguanidine ([(131)I]MIBG) has been used for the therapy of tumors of neuroectodermal origin for more than 25 years. Although not yet universally adopted, [(131)I]MIBG targeted radiotherapy remains a highly

Neurotransmitters and chemokines regulate tumor cell migration: potential for a new pharmacological approach to inhibit invasion and metastasis development.

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The migration of tumor cells is a prerequisite for tumor cell invasion and metastasis development, which accounts for over 90% of cancer mortality. Therefore a major focus of current tumor biological research is the study of those factors that regulate tumor cell migration. Those chemokines and

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