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    Category Health/Medical

    Scientist identifies Mechanism underlying Peripheral Neuropathy

    April 14, 2016, Categories  Health/Medical, Biology/Biotechnology

    MMP-13 inhibition improves adult paclitaxel-induced neurotoxicity. (A) Improved touch response upon coadministration of paclitaxel and either DB04760 or CL-82198 following four injections (n = 7, 7–12 fish per group) and complete rescue by day 14 in DB04760 coadministered animals (n = 2, 5 fish). (B and C) Axon branch density in distal caudal fin is rescued upon coadministration of paclitaxel and either DB04760 or CL-82198 when assessed 1 d (B) (n = 3, 7–12 fish per group) or 10 d (C) (n = 2, 5 fish per group) after the last injection. (D and E) MMP-13 immunofluorescence staining (red) 1 d after the last injection shows MMP-13 up-regulation specifically in basal keratinocytes (yellow arrowheads) of Tg(tp63:CAAX-GFP) fish injected with paclitaxel (E) and low MMP-13 expression in vehicle controls (D). Imaging was performed using identical settings. Dermal cells in both vehicle and paclitaxel-injected fish have similar MMP-13 expression levels. White arrowheads depict large distinctive MMP-13 clusters. (E) White arrows depict clusters of MMP-13–positive cellular debris at the skin surface, indicative of increased cell shedding. (Scale bar, 5 µm.) (F) MMP-13 staining (red) is adjacent to, but not within, DRG axons (green). (Scale bar, 10 µm.) *P < 0.05, ***P < 0.001, ****P < 0.0001. ac-tub, acetylated tubulin; Pctx, paclitaxel.

    MMP-13 inhibition improves adult paclitaxel-induced neurotoxicity. (A) Improved touch response upon coadministration of paclitaxel and either DB04760 or CL-82198 following four injections (n = 7, 7–12 fish per group) and complete rescue by day 14 in DB04760 coadministered animals (n = 2, 5 fish). (B and C) Axon branch density in distal caudal fin is rescued upon coadministration of paclitaxel and either DB04760 or CL-82198 when assessed 1 d (B) (n = 3, 7–12 fish per group) or 10 d (C) (n = 2, 5 fish per group) after the last injection...

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    Vital Nutrient has key role in keeping Body Clocks Running on time

    April 13, 2016, Categories  Health/Medical, Biology/Biotechnology

    9-magnesium-foods

    An essential mineral in our diets has an unexpected role in helping living things remain adapted to the rhythms of night and day. Mg – a nutrient found in many foods – helps control how cells keep their own form of time to cope with the natural environmental cycle of day and night. The discovery in cells is expected to be linked to whole body clocks which influence circadian rhythms – of sleeping and waking, hormone release, body temperature and other important bodily functions in people.

    The surprising discovery may aid the development of chronotherapy – Rx scheduled according to time of day – in people, and development of new crop varieties with increased yields or adjustable harvesting seasons...

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    An Invisible System to Rescue the Heart

    April 12, 2016, Categories  Health/Medical, Biology/Biotechnology

    The human lymphatic system © Inserm, Léa Lemierre

    The human lymphatic system © Inserm, Léa Lemierre

    In a new heart failure study, the blood system is being explored for the purpose of improving heart function. The study has revealed the potential of a secondary system that had previously received scant attention.

    The researchers analysed the heart lymphatic system in an animal model which was highly impaired following a myocardial infarction. Using a biotherapy based on the injection of innovative microparticles, they succeeded in regenerating lymphatic vessels in a targeted manner. This treatment promotes lymphatic drainage, thus limiting post-infarct oedema and inflammation. Heart function is thereby improved.

    Lymphatic vessels in the rat heart visible in red by immunofluorescence © Inserm, Ebba Brakenhielm

    Lymphatic vessels in the rat heart visible in red by immunofluorescence © Inserm, Ebba Brakenhielm

    When the heart is no longe...

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    New Insights into How the Brain Adapts to Stress

    April 12, 2016, Categories  Health/Medical, Biology/Biotechnology

    Anatomy of hippocampal circuit into which new neurons integrate. Neurogenesis is localized to the dentate gyrus (DG) region, where only excitatory granule cells are continually produced throughout life. The DG has a complex local circuitry, with both inhibitory interneurons and excitatory feedback neurons (mossy cells) participating in the network's behavior. Granule cells in the DG project to the CA3 region, which in addition to a robust recurrent connection then projects to the CA1 region. The CA1 then projects back to the entorhinal cortex and subiculum regions, closing the “hippocampal loop.”

    Anatomy of hippocampal circuit into which new neurons integrate. Neurogenesis is localized to the dentate gyrus (DG) region, where only excitatory granule cells are continually produced throughout life. The DG has a complex local circuitry, with both inhibitory interneurons and excitatory feedback neurons (mossy cells) participating in the network’s behavior. Granule cells in the DG project to the CA3 region, which in addition to a robust recurrent connection then projects to the CA1 region. The CA1 then projects back to the entorhinal cortex and subiculum regions, closing the “hippocampal loop.”

    Stressful events result in epigenetic modifications within immediate-early genes in hippocampus neurons...

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