Хуудас 1 -аас 1349 үр дүн
Potassium uptake in normal and crown-gall tissue culture cells of Vinca rosea L. (Cathalanthus roseus G. Don.) was studied. When grown on White's medium for 14-20 d, the tumor cells had a higher K(+) content that did the normal cells. At this logarithmic stage of growth, the rate of K(+) uptake was
Over 20% of the drugs for treating human diseases target ion channels, but no cancer drug approved by the US Food and Drug Administration (FDA) is intended to target an ion channel. We found that the EAG2 (Ether-a-go-go 2) potassium channel has an evolutionarily conserved function for promoting
Relapse after clinical remission remains a leading cause of cancer-associated death. Although the mechanisms of tumor relapse are complex, the ability of cancer cells to survive physiological stress is a prerequisite for recurrence. Ewing sarcoma (ES) and neuroblastoma (NB) are aggressive cancers
This study was performed to determine whether minoxidil sulfate (MS), a selective Adenosine 5'-triphosphate-sensitive potassium channel (K (ATP) channel) activator, has an effect on the expression of caveolin-1 in the rat's brain tumor tissue. Using a rat brain glioma (C6) model, we found that the
Previously, we showed that the expression of potassium channel tetramerization domain-containing 12 (KCTD12), which was discovered by a proteomics approach, is associated with high-risk behavior of gastrointestinal stromal tumors (GISTs). Here, we examined the distribution and expression of this
The treatment of mice bearing i.m. B16 melanoma with equitoxic dosages of the clinically used 5-(3,3-dimethyl-1-triazeno)-imidazole-4-carboxamide (DTIC) and of its benzenoid water-soluble analogue p-(3,3-dimethyl-1-triazeno)benzoic acid potassium salt (DM-COOK) prior to surgical tumor removal
The potassium channel activator nicorandil, under evaluation for antianginal management, has been shown to decrease neutrophil respiratory burst. Since our laboratory has demonstrated that reactive oxygen species (ROS) increase tumor necrosis factor (TNF) production, we hypothesized that nicorandil
Potassium bromate (KBrO3) is a rodent carcinogen and a nephro- and neurotoxicant in humans. KBrO3 is used in cosmetics and food products and is a by-product of water disinfection by ozonization. KBrO3 is carcinogenic in the rat kidney, thyroid, and mesothelium and is a renal carcinogen in the male
We report the modulatory effect of coumarin (1,2-benzopyrone) on potassium bromate (KBrO(3)) mediated nephrotoxicity in Wistar rats. KBrO(3) (125 mg/kg body weight, i.p.) enhances gamma-glutamyl transpeptidase, renal lipid peroxidation, xanthine oxidase and hydrogen peroxide (H(2)O(2)) generation
Medulloblastoma (MB) is the most common pediatric CNS malignancy. We identify EAG2 as an overexpressed potassium channel in MBs across different molecular and histological subgroups. EAG2 knockdown not only impairs MB cell growth in vitro, but also reduces tumor burden in vivo and enhances survival
Hydrogen sulfide (H(2)S) is the third gasotransmitter found to be produced endogenously in living cells to exert physiological functions. Large conductance (maxi) calcium-activated potassium channels (BK), which play an important role in the regulation of electrical activity in many cells, are
Every year in the US, 20,000 new primary and nearly 200,000 metastatic brain tumor cases are reported. The cerebral microvessels/capillaries that form the blood-brain barrier not only protect the brain from toxic agents in the blood but also pose a significant hindrance to the delivery of small and
The blood-brain tumor barrier (BTB) limits the delivery of therapeutic drugs to brain tumors. We demonstrate in a rat brain tumor (RG2) model an enhanced drug delivery to brain tumor following intracarotid infusion of bradykinin (BK), nitric oxide (NO) donors, or agonists of soluble guanylate
Geopathological, dietary, gerontological, and geophysiological data, data on electrolyte concentrations in healthy cells and in the corresponding tumor cells, and data on the potassium status of patients with different diseases and the associations of these diseases with cancer revealed a common
This is a preliminary report that shows that supplemental potassium partially prevents 1,2-dimethylhydrazine (DMH) induction of tumors of the small intestine in Sprague-Dawley rats. Male rats were injected weekly with 20 mg DMH/kg body wt for 20 weeks. Potassium chloride was provided in the drinking