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Tuesday, May 3, 2016
"Biggest Loser" study: Why keeping weight off is so hard
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fbiggest-loser-study-why-staying-slim-is-so-hard%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Boy dies of cancer after getting hundreds of birthday cards
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fchicago-boy-lucas-bear-cervone-dies-of-cancer-after-getting-hundreds-of-birthday-cards%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Millions of antibiotic prescriptions each year are unnecessary
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fmillions-of-antibiotic-prescriptions-each-year-unnecessary-study-finds%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Expectant Mom's Flu Shot Protects 2
Infants benefit when a woman gets her influenza immunization during pregnancy, study confirms
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.webmd.com%2Fbaby%2Fnews%2F20160503%2Fexpectant-moms-flu-shot-protects-2%3Fsrc%3DRSS_PUBLIC&key=ddaed8f51db7bb1330a6f6de768a69b8
USDA Awards $16 Million for Research into Sustainable Crop and Livestock Production Methods
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.usda.gov%2Fwps%2Fportal%2Fusda%2Fusdahome%3Fcontentid%3D2016%2F05%2F0101.xml%26amp%3Bcontentidonly%3Dtrue&key=ddaed8f51db7bb1330a6f6de768a69b8
Desperate for Shut-Eye?
Physicians' group recommends cognitive behavioral therapy before drugs for insomnia
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.webmd.com%2Fsleep-disorders%2Fnews%2F20160502%2Fdesperate-for-shut-eye%3Fsrc%3DRSS_PUBLIC&key=ddaed8f51db7bb1330a6f6de768a69b8
Opioid Epidemic Fueling Hospitalizations, Costs
New research sheds light on the growing costs to the health care system associated with painkiller and heroin abuse.
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.webmd.com%2Fmental-health%2Faddiction%2Fnews%2F20160502%2Fopioid-epidemic-fueling-hospitalizations-hospital-costs%3Fsrc%3DRSS_PUBLIC&key=ddaed8f51db7bb1330a6f6de768a69b8
Jury awards cancer survivor $55M in J&J talc lawsuit
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fvideos%2Fjury-awards-cancer-survivor-55m-in-johnson-johnson-talcum-powder-lawsuit%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Johnson & Johnson slammed again in a talcum powder lawsuit
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fjohnson-and-johnson-slammed-again-in-a-talcum-powder-lawsuit%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Monday, May 2, 2016
Lack of VEGFR2 signaling causes maldevelopment of the intestinal microvasculature and facilitates necrotizing enterocolitis in neonatal mice
The pathogenesis of necrotizing enterocolitis (NEC), a common gastrointestinal disease affecting premature infants, remains poorly understood. We previously found that intestinal VEGF-A expression is decreased in human NEC samples and in a neonatal mouse NEC model prior to detectable histological injury. Therefore, we hypothesized that lack of VEGF receptor 2 (VEGFR2) signaling facilitates neonatal intestinal injury by impairing intestinal microvasculature development. Here, we found that intestinal VEGF-A and its receptor, VEGFR2, were highly expressed at the end of fetal life and significantly decreased after birth in mice. Furthermore, selective inhibition of VEGFR2 kinase activity and exposure to a neonatal NEC protocol significantly decreased the density of the intestinal microvascular network, which was further reduced when both interventions were provided together. Furthermore, VEGFR2 inhibition resulted in greater mortality and incidence of severe injury in pups submitted to the NEC model. The percentage of lamina propria endothelial cells was decreased during NEC induction, and further decreased when VEGFR2 signaling was inhibited. This was associated with decreased endothelial cell proliferation rather than apoptosis. In conclusion, we found that VEGF-A and VEGFR2 proteins are highly expressed in the intestine before birth, and are significantly downregulated in the immediate neonatal period. Furthermore, VEGFR2 signaling is necessary to maintain the integrity of the intestinal mucosal microvasculature during the postnatal period and lack of VEGFR2 signaling predisposes to NEC in neonatal mice.
From: Yan, X., Managlia, E., Liu, S. X., Tan, X.-D., Wang, X., Marek, C., De Plaen, I. G. http://redirect.viglink.com?u=http%3A%2F%2Fajpgi.physiology.org%2Fcgi%2Fcontent%2Fabstract%2F310%2F9%2FG716%3Frss%3D1&key=ddaed8f51db7bb1330a6f6de768a69b8
Selective portal vein injection for the design of syngeneic models of liver malignancy
Liver metastases are the most frequent cause of death due to colorectal cancer (CRC). Syngeneic orthotopic animal models, based on the grafting of cancer cells or tissue in host liver, are efficient systems for studying liver tumors and their (patho)physiological environment. Here we describe selective portal vein injection as a novel tool to generate syngeneic orthotopic models of liver tumors that avoid most of the weaknesses of existing syngeneic models. By combining portal vein injection of cancer cells with the selective clamping of distal liver lobes, tumor growth is limited to specific lobes. When applied on MC-38 CRC cells and their mouse host C57BL6, selective portal vein injection leads with 100% penetrance to MRI-detectable tumors within 1 wk, followed by a steady growth until the time of death (survival ~7 wk) in the absence of extrahepatic disease. Similar results were obtained using CT-26 cells and their syngeneic Balb/c hosts. As a proof of principle, lobe-restricted liver tumors were also generated using Hepa1-6 (C57BL6-syngeneic) and TIB-75 (Balb/c-syngeneic) hepatocellular cancer cells, demonstrating the general applicability of selective portal vein injection for the induction of malignant liver tumors. Selective portal vein injection is technically straightforward, enables liver invasion via anatomical routes, preserves liver function, and provides unaffected liver tissue. The tumor models are reproducible and highly penetrant, with survival mainly dependent on the growth of lobe-restricted liver malignancy. These models enable biological studies and preclinical testing within short periods of time.
From: Limani, P., Borgeaud, N., Linecker, M., Tschuor, C., Kachaylo, E., Schlegel, A., Jang, J.-H., Ungethüm, U., Montani, M., Graf, R., Humar, B., Clavien, P.-A. http://redirect.viglink.com?u=http%3A%2F%2Fajpgi.physiology.org%2Fcgi%2Fcontent%2Fabstract%2F310%2F9%2FG682%3Frss%3D1&key=ddaed8f51db7bb1330a6f6de768a69b8
"Asian tiger" mosquito could carry Zika virus to more U.S. states
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fvideos%2Fasian-tiger-mosquito-could-carry-zika-virus-to-more-u-s-states%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
New Zika alert: Beware the Asian tiger mosquito
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fzika-virus-may-be-carried-farther-north-than-first-thought%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
CDC investigating after 97 fall sick on Disney cruise ship
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fcdc-investigating-after-97-fall-sick-on-disney-cruise-ship%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
Chronic insomnia? Why pills may not be the answer
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fchronic-insomnia-why-pills-may-not-be-the-answer%2F&key=ddaed8f51db7bb1330a6f6de768a69b8