Chemoprevention of prostate cancer by natural agents: evidence from molecular and epidemiological studies.

PMID: 

Anticancer Res. 2019 Oct ;39(10):5231-5259. PMID: 31570421

Abstract Title: 

Chemoprevention of Prostate Cancer by Natural Agents: Evidence from Molecular and Epidemiological Studies.

Abstract: 

BACKGROUND/AIM: Prostate cancer is one of the most common cancers in men which remains a global public health issue. Treatment of prostate cancer is becoming increasingly intensive and aggressive, with a corresponding increase in resistance, toxicity and side effects. This has revived an interest in nontoxic and cost-effective preventive strategies including dietary compounds due to the multiple effects they have been shown to have in various oncogenic signalling pathways, with relatively few significant adverse effects.MATERIALS AND METHODS: To identify such dietary components and micronutrients and define their prostate cancer-specific actions, we systematically reviewed the current literature for the pertinent mechanisms of action and effects on the modulation of prostate carcinogenesis, along with relevant updates from epidemiological and clinical studies.RESULTS: Evidence from various recent experimental, clinical and epidemiological studies indicates that select dietary micronutrients (i.e., lycopene, epigallocatechin gallate, sulforaphane, indole-3-carbinol, resveratrol, quercetin, curcumin&piperine) and zinc play a key role in prostate cancer prevention and progression and therefore hold great promise for the future overall management of prostate cancer.CONCLUSION: A formulation that comprises these micronutrients using the optimal, safest form and dosing should be investigated in future prostate cancer chemoprevention studies and as part of standard prostate cancer therapy.

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Lycopene alleviates H2O2-induced oxidative stress, inflammation and apoptosis in bovine mammary epithelial cells.

PMID: 

Food Funct. 2019 Oct 16 ;10(10):6276-6285. PMID: 31576860

Abstract Title: 

Lycopene alleviates HO-induced oxidative stress, inflammation and apoptosis in bovine mammary epithelial cells via the NFE2L2 signaling pathway.

Abstract: 

During the transition into lactation, bovine mammary epithelial cells (bMECs) are likely subjected to altered redox balance due to the high metabolic rate associated with the onset of lactation. In non-ruminants, lycopene (LYC), a naturally occurring hydrocarbon carotenoid, has attracted considerable attention as a potential natural agent against oxidative stress. The aim of this study was to investigate whether LYC alleviates oxidative injury in bMECs induced by H2O2 and the underlying molecular mechanisms. The primary bMEC and bovine MEC line MAC-T cells were treated with H2O2 (500μM) and/or LYC (0.5, 1 or 2 μM) for 24 h. The results showed that treatment with LYC decreased H2O2-induced accumulation of intracellular reactive oxygen species (ROS), inflammatory cytokine (TNF-α, IL-6, and IL-1β) expression and the apoptosis rate. These effects were associated with the activation of the NFE2L2-antioxidant response element (ARE) pathway coupled with inactivation of the nuclear factor-κB (NF-κB) inflammatory and caspase/Bcl2 apoptotic pathways. The bMECs were transfected with NFE2L2 siRNA for 48 h and/or treated with H2O2 (500 μM) and/or LYC (2 μM) for another 24 h. The fact that transfection with NFE2L2 siRNA abrogated the protection of LYC against H2O2-induced accumulation of intracellular ROS, inflammatory cytokine expression and apoptosis suggested that this antioxidant transcription factor is essential for the protective mechanism induced by LYC. These results suggest that LYC might be a potent antioxidant in vivo that could be administered to ruminant animals during stressful periods such as the transition into lactation.

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Carnosic acid has the potential to inhibit cancer cell growth in A-549 lung cancer cells.

PMID: 

Med Sci Monit. 2019 Oct 21 ;25:7864-7871. Epub 2019 Oct 21. PMID: 31631173

Abstract Title: 

Antiproliferative Activity of Carnosic Acid is Mediated via Inhibition of Cell Migration and Invasion, and Suppression of Phosphatidylinositol 3-Kinases (PI3K)/AKT/Mammalian Target of Rapamycin (mTOR) Signaling Pathway.

Abstract: 

BACKGROUND Lung cancer is one of the leading causes of cancer-related mortalities worldwide and majority of these deaths result from non-small cell lung cancer (NSCLC). The primary objective of this research was to determine the anticancer potential of carnosic acid, a plant derived abietane diterpene, against human lung cancer cells, as well as to determine its effects on cell migration and invasion, apoptosis, and the PI3K/AKT/m-TOR signaling pathway. MATERIAL AND METHODS Cell viability was evaluated by Cell Counting Kit-8 (CCK-8) assay; fluorescence microscopy using acridine orange/ethidium bromide stain and Comet assay were used to study cellular apoptosis. In vitro wound healing assay was used to study effects on cell migration; Transwell assay was used to study cell invasion after drug treatment. Western blot assay was used to study effects of carnosic acid on the PI3K/AKT/m-TOR signaling pathway. RESULTS It was shown that carnosic acid could inhibit the growth of A-549 human non-small cell lung carcinoma cells dose-dependently showing an IC₅₀ value of 12.5 μM. This growth inhibition of A-549 cells was mediated via apoptotic cell death as observed by fluorescence microscopy showing nuclear fragmentation and chromatin condensation. Carnosic acid, dose-dependently, also inhibited cell migration and invasion. Finally, western blot assay revealed that carnosic acid also led to inhibition of the PI3K/AKT/m-TOR signaling pathway. CONCLUSIONS In conclusion, our results showed that Carnosic acid has the potential to inhibit cancer cell growth in A-549 lung cancer cells by activating apoptotic death, inhibiting cell migration and invasion and suppressing PI3K/AKT/m-TOR signaling pathway.

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The Little Known Miracle of Life: Fulvic acid

In the beginning, the earth was blessed with rich, fertile soil and lush vegetation. The soil was teaming with microbes — bacteria, fungi, and protozoa, to name a few. In the perfect cycle of life, microbes in the soil break down dead plant material and create substances and nutrients that nourish plants. When humans eat these plants, we enjoy the nutrients that they provide.

The microbes in the soil make the hidden treasure called fulvic acid, the miracle of life. Our bodies need it for optimal health. Fulvic acid is not a vitamin or a mineral and science cannot synthesize this substance in a laboratory.

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Millimeter range electromagnetic waves activate metabolic processes and the synthesis of factors controlling early embryonic development in vitro.

PMID: 

Ontogenez. 2000 Jan-Feb;31(1):27-31. PMID: 10732360

Abstract Title: 

[The simulation of the cooperative effect of development in a culture of early mouse embryos after irradiation with electromagnetic waves in the millimeter range].

Abstract: 

We have found that two-cell mouse embryos cultured in vitro can be stimulated by electromagnetic irradiation in the millimeter range. After 30 min of exposure, they acquire the ability to develop in culture on their own and can reach the stage of blastocyst in a relatively large volume of Whitten cultural medium (150 microliters) without serum or growth factors. It is proposed that millimeter range electromagnetic waves activate metabolic processes and specifically the synthesis of factors controlling early embryonic development in culture.

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Radiofrequency radiation exposure leads to neuronal cells and changes in astrocyte morphology.

PMID: 

Neurosci Lett. 2012 Jan 11 ;506(2):292-6. Epub 2011 Nov 25. PMID: 22133805

Abstract Title: 

Calcium-binding proteins and GFAP immunoreactivity alterations in murine hippocampus after 1 month of exposure to 835 MHz radiofrequency at SAR values of 1.6 and 4.0 W/kg.

Abstract: 

Widespread use of wireless mobile communication has raised concerns of adverse effect to the brain owing to the proximity during use due to the electromagnetic field emitted by mobile phones. Changes in calcium ion concentrations via binding proteins can disturb calcium homeostasis; however, the correlation between calcium-binding protein (CaBP) immunoreactivity (IR) and glial cells has not been determined with different SAR values. Different SAR values [1.6 (E1.6 group) and 4.0 (E4 group) W/kg] were applied to determine the distribution of calbindin D28-k (CB), calretinin (CR), and glial fibrillary acidic protein (GFAP) IR in murine hippocampus. Compared with sham control group, decreased CB and CR IRs, loss of CB and CR immunoreactive cells and increased GFAP IR exhibiting hypertrophic cytoplasmic processes were noted in both experimental groups. E4 group showed a prominent decrement in CB and CR IR than the E1.6 group due to down-regulation of CaBP proteins and neuronal loss. GFAP IR was more prominent in the E4 group than the E1.6 group. Decrement in the CaBPs can affect the calcium-buffering capacity leading to cell death, while increased GFAP IR and changes in astrocyte morphology, may mediate brain injury due to radiofrequency exposure.

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Carnosic acid protects against lipopolysaccharide-induced acute lung injury in mice.

PMID: 

Exp Ther Med. 2019 Nov ;18(5):3707-3714. Epub 2019 Sep 23. PMID: 31611929

Abstract Title: 

Carnosic acid protects against lipopolysaccharide-induced acute lung injury in mice.

Abstract: 

Acute respiratory distress syndrome is a well-known inflammatory disease associated with high rates of morbidity and mortality due to a lack of effective treatment methods. Carnosic acid (CA) is a phenolic diterpene compound that serves a central role in cytoprotective responses to inflammation. In the present study, the protective mechanism of CA on acute lung injury (ALI) induced by lipopolysaccharide (LPS) was investigated. Mice were randomly assigned to the following five groups: Control group, LPS group, and LPS plus CA groups (at 10, 20 and 40 mg/kg doses). Following pre-treatment with vehicle or CA, ALI was induced by the administration of LPS. At 6 h after LPS treatment, mice were sacrificed and lung tissues were harvested for histologic analysis and the determination of wet-to-dry ratio, myeloperoxidase activity and toll-like receptor 4 (TLR4) and NF-κB expression. Additionally, the levels of interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α) were determined in bronchoalveolar lavage fluid (BALF) and lung tissues, as well as the rate of apoptosis of the isolated neutrophils from BALF. The alleviation of LPS-induced ALI by CA was confirmed by histologic results and a reduction in the wet-to-dry ratio of lung tissues. Additionally, CA was revealed to significantly suppress the inhibitory effect of LPS on neutrophil apoptosis and the promoting effects of LPS on IL-1β, IL-6, TNF-α, TLR4 and NF-κB expression, and NF-κB phosphorylation. The current results indicated that CA protects against LPS-induced ALI via a mechanism that inhibits inflammation.

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Mangifera indica L. leaf extract induces adiponectin and regulates adipogenesis.

PMID: 

Int J Mol Sci. 2019 Jun 29 ;20(13). Epub 2019 Jun 29. PMID: 31261958

Abstract Title: 

L. Leaf Extract Induces Adiponectin and Regulates Adipogenesis.

Abstract: 

Natural bioactive compounds may be used in obese patients because of their ability to impact on various key mechanisms involved in the complex pathophysiological mechanisms of such condition. The aim of this study was to investigate the effect of aL. leaf extract (MLE) on adipogenic differentiation of murine preadipocyte cells. 3T3-L1 cells were treated during their differentiation with various concentrations of (L.) leaves extract (MLE) (750, 380, 150, 75 and 35μg) in order to assess their lipid content, adiponectin production, expression profile of genes involved in lipid metabolism, oxidative stress and inflammation. Our results showed that MLE was particularly enriched in polyphenols (46.30 ± 0.083 mg/g) and that pharmacological treatment of cells resulted in a significant increase of adiponectin levels and reduction of intracellular lipid content. Consistently with these results, MLE resulted in a significant decrease of the expression of genes involved in lipid metabolism (FAS, PPARG, DGAT1, DGAT2, and SCD-1). In conclusion, our results suggest that MLE may represent a possible pharmacological tool for obese or metabolic syndrome patients.

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Cell phone electromagnetic field exposure leads to genotoxic damage in human peripheral blood lymphocytes.

PMID: 

Bioelectromagnetics. 2003 Feb ;24(2):82-90. PMID: 12524674

Abstract Title: 

Exposure of human peripheral blood lymphocytes to electromagnetic fields associated with cellular phones leads to chromosomal instability.

Abstract: 

Whether exposure to radiation emitted from cellular phones poses a health hazard is at the focus of current debate. We have examined whether in vitro exposure of human peripheral blood lymphocytes (PBL) to continuous 830 MHz electromagnetic fields causes losses and gains of chromosomes (aneuploidy), a major"somatic mutation"leading to genomic instability and thereby to cancer. PBL were irradiated at different average absorption rates (SAR) in the range of 1.6-8.8 W/kg for 72 hr in an exposure system based on a parallel plate resonator at temperatures ranging from 34.5-37.5 degrees C. The averaged SAR and its distribution in the exposed tissue culture flask were determined by combining measurements and numerical analysis based on a finite element simulation code. A linear increase in chromosome 17 aneuploidy was observed as a function of the SAR value, demonstrating that this radiation has a genotoxic effect. The SAR dependent aneuploidy was accompanied by an abnormal mode of replication of the chromosome 17 region engaged in segregation (repetitive DNA arrays associated with the centromere), suggesting that epigenetic alterations are involved in the SAR dependent genetic toxicity. Control experiments (i.e., without any RF radiation) carried out in the temperature range of 34.5-38.5 degrees C showed that elevated temperature is not associated with either the genetic or epigenetic alterations observed following RF radiation-the increased levels of aneuploidy and the modification in replication of the centromeric DNA arrays. These findings indicate that the genotoxic effect of the electromagnetic radiation is elicited via a non-thermal pathway. Moreover, the fact that aneuploidy is a phenomenon known to increase the risk for cancer, should be taken into consideration in future evaluation of exposure guidelines.

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Gene-Editing Unintentionally Adds Bovine DNA, Goat DNA, and Bacterial DNA, Mouse Researchers Find


Originally published on www.independentsciencenews.org

The gene-editing of DNA inside living cells is considered by many to be the preeminent technological breakthrough of the new millennium. Researchers in medicine and agriculture have rapidly adopted it as a technique for discovering cell and organism functions. But its commercial prospects are much more complicated.

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