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    Boosting the effects of Vitamin D to tackle diabetes

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    yoly
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    Boosting the effects of Vitamin D to tackle diabetes

    Post by yoly on Fri May 11 2018, 13:47

    Boosting the effects of Vitamin D to tackle diabetes

    https://www.salk.edu/news-release/boosting-the-effects-of-vitamin-d-to-tackle-diabetes/

    Salk Institute study suggests new approach for treating type 2 diabetes as well as other diseases, including cancer

    LA JOLLA—More than 27 million people in the United States are living with type 2 diabetes, according to the Centers for Disease Control and Prevention. As the population ages and a growing percentage of people become overweight or obese, that number is expected to increase.
    Enhanced activation of vitamin D curbs type 2 diabetes progression in animal models.Enhanced activation of vitamin D curbs type 2 diabetes progression in animal models. Left: damaged insulin positive B cells (red) in a diabetic mouse pancreas. Right: B cells (red) were protected in a diabetic mouse pancreas treated with a combination of a vitamin D activator and BRD9 inhibitor.

    In a paper published May 10, 2018, in Cell, researchers from the Salk Institute report a potential new approach for treating diabetes by protecting beta cells—the cells in the pancreas that produce, store and release the hormone insulin. When beta cells become dysfunctional, the body can’t make insulin to control blood sugar (glucose) and levels of glucose can rise to dangerous—even fatal—levels.

    The investigators accomplished their goal by using an unexpected source: vitamin D. Vitamin D in cells and mouse models proved beneficial in treating damaged beta cells. It also provided new insights about gene regulation that could be applied to developing treatments for other diseases, including cancer.

    “We know that diabetes is a disease caused by inflammation,” explains senior author Ronald Evans, a Howard Hughes Medical Institute investigator and holder of Salk’s March of Dimes Chair in Molecular and Developmental Biology. “In this study, we identified the vitamin D receptor as an important modulator of both inflammation and beta cell survival.”

    Using beta cells created from embryonic stem cells, the investigators were able to identify a compound, iBRD9, that appeared to enhance the activation of the vitamin D receptor when it was combined with vitamin D to improve the survival of beta cells. The team accomplished this by conducting a screening test to look for compounds that improved the survival of beta cells in a dish. They then tested the combination in a mouse model of diabetes and showed that it could bring glucose back to normal levels in the animals.

    “This study started out by looking at the role of vitamin D in beta cells,” says Zong Wei, a research associate in Salk’s Gene Expression Laboratory and the study’s first author. “Epidemiological studies in patients have suggested a correlation between high vitamin D concentrations in the blood and a lower risk of diabetes, but the underlying mechanism was not well understood. It’s been hard to protect beta cells with the vitamin alone. We now have some ideas about how we might be able to take advantage of this connection.”
    From left: (front row) Nanhai He, Gabriela Estepa, Ron Evans and Ruth Yu; (back row) Eiji Yoshihara, Michael Downes, Weiwei Fan and Zong Wei.From left: (front row) Nanhai He, Gabriela Estepa, Ron Evans and Ruth Yu; (back row) Eiji Yoshihara, Michael Downes, Weiwei Fan and Zong Wei.

    The underlying process has to do with transcription—the way that genes are translated into proteins. Combining the new compound with vitamin D allowed certain protective genes to be expressed at much higher levels than they are in diseased cells.

    “Activating the vitamin D receptor can trigger the anti-inflammatory function of genes to help cells survive under stressed conditions,” says Michael Downes, a Salk senior staff scientist and co–corresponding author. “By using a screening system that we developed in the lab, we’ve been able to identify an important piece of that puzzle that allows for super-activation of the Vitamin D pathway.”

    The discovery’s implications can have far-reaching implications: It identifies a basic mechanism that can be translated into drugging many different targets in the clinic.

    “In this study, we looked at diabetes, but because this is an important receptor it could potentially be universal for any treatments where you need to boost the effect of vitamin D,” adds Ruth Yu, a Salk staff researcher and one of the study’s authors. “For example, we are especially interested in looking at it in pancreatic cancer, which is a disease that our lab already studies.”

    The investigators say that, although the new compound did not appear to cause any side effects in the mice, further testing is needed before clinical trials can begin.

    The paper’s other authors were Eiji Yoshihara, Nanhai He, Nasun Hah, Weiwei Fan, Antonio Pinto, Timothy Huddy, Yuhao Wang, Brittany Ross, Gabriela Estepa, Yang Dai, Ning Ding, Mara Sherman, Sungsoon Fang, Xuan Zhao and Annette Atkins of Salk; and Christopher Liddle of the Westmead Institute for Medical Research and Sydney Medical School in Sydney, Australia.

    This work was funded by the National Institutes of Health and its National Institute of Environmental Health Sciences, the Glenn Foundation for Medical Research, the Leona M. and Harry B. Helmsley Charitable Trust, Ipsen/Biomeasure, the California Institute for Regenerative Medicine, the Ellison Medical Foundation, and a gift from Steven and Lisa Altman.
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    chris c
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    Re: Boosting the effects of Vitamin D to tackle diabetes

    Post by chris c on Sun May 13 2018, 22:55

    Then there's this

    Joint Association of Low Vitamin D and Vitamin K Status With Blood Pressure and Hypertension

    http://hyper.ahajournals.org/content/69/6/1165.long

    They fail to distinguish between K1 and K2, so eat your cheese and spinach while sitting in the sun.

      Current date/time is Sun Dec 16 2018, 15:00