This study links glycine to increased blood pressure. However, meat is the primary source of glycine. So, if the meat is loaded with omega-6, hormones...these will be the source of the inflammation and resultant increase in blood pressure, not the glycine. One must read these studies closely. No conclusion can be made from this study.
This article describes how important glutamine is as an alternative energy source in Glioblastoma. Cancer is a substrate-level dependent energy production disease. If one disrupts glycolysis as a source of energy, then many cancers will use glutamine through glutaminolysis. The cancer cells will do this through glutamate dehydrogenase and glutamate production. This will increase alpha-ketoglutarate which will then feed the substrate-level phosphorylation through the TCA cycle. This study mentioned that EGCG is a way to naturally inhibit glutamate dehydrogenase.
New study finds no cardiovascular benefits from resveratrol. It has long been claimed that reserveratrol is the polyphenol from red wine and chocolate that is the source of cardiovascular benefits such as found in the "french paradox". However, this new study finds that resveratrol provides no benefit. Studies still point to dark chocolate and red wine as means to reduce inflammation and reduce CVD risk, this study just points away from resveratrol as the source of the benefit.
Chen et al. have revealed that ascorbate at pharmacologic concentrations (0.3–20 mM) achieved only by intravenously (i.v.) administration selectively kills a variety of cancer cell lines in vitro, but has little cytotoxic effect on normal cells.
Ascorbic acid (the reduced form of vitamin C) is specifically transported into cells by sodium-dependent vitamin C transporters (SVCTs)
SVCT-1 is predominantly expressed in epithelial tissues
differential sensitivity to VC may result from variations in VC flow into cells, which is dependent on SVCT-2 expression.
high-dose VC significantly impaired both the tumorspheres initiation (Fig. 4d, e) and the growth of established tumorspheres derived from HCC cells (Fig. 4f, g) in a time-dependent and dose-dependent manner.
Hepatocellular carcinoma (HCC)
The antioxidant, N-acetyl-L-cysteine (NAC), preventing VC-induced ROS production (a ROS scavenger), completely restored the viability and colony formation among VC-treated cells
DNA double-strand damage was found following VC treatment
DNA damage was prevented by NAC
Interestingly, the combination of VC and cisplatin was even more effective in reducing tumor growth and weight
Consistent with the in vitro results, stemness-related genes expressions in tumor xenograft were remarkably reduced after VC or VC+cisplatin treatment, whereas conventional cisplatin therapy alone led to the increase of CSCs
VC is one of the numerous common hepatoprotectants.
Interestingly, at extracellular concentrations greater than 1 mM, VC induces strong cytotoxicity to cancer cells including liver cancer cells
we hypothesized that intravenous VC might reduce the risk of recurrence in HCC patients after curative liver resection.
Intriguingly, the 5-year disease-free survival (DFS) for patients who received intravenous VC was 24%, as opposed to 15% for no intravenous VC-treated patients
Median DFS time for VC users was 25.2 vs. 18 months for VC non-users
intravenous VC use is linked to improved DFS in HCC patients.
In this study, based on the elevated expression of SVCT-2, which is responsible for VC uptake, in liver CSCs, we revealed that clinically achievable concentrations of VC preferentially eradicated liver CSCs in vitro and in vivo
the authors here made similar mistakes to the Mayo authors i.e. under doses here in this study. They dosed at only 2 grams IVC. A woefully low dose of IVC.
Additionally, we found that intravenous VC reduced the risk of post-surgical HCC progression in a retrospective cohort study.
Their comfort zone was 1mM. They should have targeted 20-40 mM.
Three hundred thirty-nine participants (55.3%) received 2 g intravenous VC for 4 or more days after initial hepatectomy
As the key protein responsible for VC uptake in the liver, SVCT-2 played crucial roles in regulating the sensitivity to ascorbate-induced cytotoxicity
we also observed that SVCT-2 was highly expressed in human HCC samples and preferentially elevated in liver CSCs
SVCT-2 might serve as a potential CSC marker and therapeutic target in HCC
CSCs play critical roles in regulating tumor initiation, relapse, and chemoresistance
we revealed that VC treatment dramatically reduced the self-renewal ability, expression levels of CSC-associated genes, and percentages of CSCs in HCC, indicating that CSCs were more susceptible to VC-induced cell death
as a drug for eradicating CSCs, VC may represent a promising strategy for treatment of HCC, alone or particularly in combination with chemotherapeutic drugs
In HCC, we found that VC-generated ROS caused genotoxic stress (DNA damage) and metabolic stress (ATP depletion), which further activated the cyclin-dependent kinase inhibitor p21, leading to G2/M phase cell cycle arrest and caspase-dependent apoptosis in HCC cells
we demonstrated a synergistic effect of VC and chemotherapeutic drug cisplatin on killing HCC both in vitro and in vivo
Intravenous VC has also been reported to reduce chemotherapy-associated toxicity of carboplatin and paclitaxel in patients,38 but the specific mechanism needs further investigation
Terribly inadequate dose. Target is 20-40 mM which other studies have found occur with 50-75 grams of IVC.
several clinical trials of high-dose intravenous VC have been conducted in patients with advanced cancer and have revealed improved quality of life and prolonged OS
high-dose VC was not toxic to immune cells and major immune cell subpopulations in vivo
high recurrence rate and heterogeneity
tumor progression, metastasis, and chemotherapy-resistance
SVCT-2 was highly expressed in HCC samples in comparison to peri-tumor tissues
high expression (grade 2+/3+) of SVCT-2 was in agreement with poorer overall survival (OS) of HCC patients (Fig. 1c) and more aggressive tumor behavior
SVCT-2 is enriched in liver CSCs
these data suggest that SVCT-2 is preferentially expressed in liver CSCs and is required for the maintenance of liver CSCs.
pharmacologic concentrations of plasma VC higher than 0.3 mM are achievable only from i.v. administration
The viabilities of HCC cells were dramatically decreased after exposure to VC in dose-dependent manner
VC and cisplatin combination further caused cell apoptosis in tumor xenograft
These results verify that VC inhibits tumor growth in HCC PDX models and SVCT-2 expression level is associated with VC response
qPCR and IHC analysis demonstrated that expression levels of CSC-associated genes and percentages of CSCs in PDXs dramatically declined after VC treatment, confirming the inhibitory role of VC in liver CSCs
IV vitamin C in vitro and in vivo found to "preferentially" eradicate cancer stem cells. In addition, IV vitamin C was found to be adjunctive to chemotherapy, found to be hepatoprotectant. This study also looked at SVCT-2, which is the transport protein important in liver C uptake.
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We briefly described role of probiotics in maintaining gut health & how do probiotics work. What are natural sources & symptoms of unhealthy & healthy gut
Ketogenic diet beneficial in malignant brain tumor of experimental brain and human brain tumors. This is through mainly glucose restriction, starving the cancer of its primary fuel source--glucose.
animal study finds vitamin C improves hypertension via renovascular source and oxidative stress. The dosage was 150 mg/kg/day. This would be equivalent to 10,800 grams daily for a 72 human. But what about a 200 lb male or female? That would be 13,650 grams of vitamin C daily.