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Copyright © The Author(s) 2020. Published by the Genetics Society of America.Aging is accompanied by a progressive decline in immune function termed "immunosenescence". Deficient surveillance coupled with the impaired function of immune cells compromises host defense in older animals. The dynamic activity of regulatory modules that control immunity appears to underlie age-dependent modifications to the immune system. In the roundworm Caenorhabditis elegans levels of the PMK-1 p38 MAP kinase diminish over time, reducing the expression of immune effectors that clear bacterial pathogens. Along with the PMK-1 pathway, innate immunity in C. elegans is regulated by the insulin signaling pathway. Here we asked whether DAF-16, a Forkhead box (FOXO) transcription factor whose activity is inhibited by insulin signaling, plays a role in host defense later in life. While in younger C. elegans DAF-16 remains in an inactive state unless stimulated by environmental insults, we found that even in the absence of acute stress the transcriptional activity of DAF-16 increases in an age-dependent manner. https://www.selleckchem.com/products/perhexiline-maleate.html Beginning in the reproductive phase of adulthood, DAF-16 upregulates a subset of its transcriptional targets, including genes required to kill ingested microbes. Accordingly, DAF-16 has little to no role in larval immunity, but functions specifically during adulthood to confer resistance to bacterial pathogens. We found that DAF-16-mediated immunity in adults requires SMK-1, a regulatory subunit of the PP4 protein phosphatase complex. Our data suggest that as the function of one branch of the innate immune system of C. elegans (PMK-1) declines over time, DAF-16-mediated immunity ramps up to become the predominant means of protecting adults from infection, thus reconfiguring immunity later in life. Copyright © The Author(s) 2020. Published by the Genetics Society of America.Drought stress is an important crop yield limiting factor worldwide. Plant physiological responses to drought stress are driven by changes in gene expression. While drought-responsive genes (DRGs) have been identified in maize, regulation patterns of gene expression during progressive water deficits remain to be elucidated. In this study, we generated time-series transcriptomic data from the maize inbred line B73 under well-watered and drought conditions. Comparisons between the two conditions identified 8,626 DRGs and which the stages (early, middle, and late drought) at which DRGs occurred. Different functional groups of genes were regulated at the three stages. Specifically, early and middle DRGs display higher copy number variation among diverse Zea mays lines, and they exhibited stronger associations with drought tolerance as compared to late DRGs. In addition, correlation of expression between small RNAs (sRNAs) and DRGs from the same samples identified 201 negatively sRNA/DRG correlated pairs, including genes showing high levels of association with drought tolerance, such as two glutamine synthetase genes, gln2 and gln6 The characterization of dynamic gene responses to progressive drought stresses indicates important adaptive roles of early and middle DRGs, as well as roles played by sRNAs in gene expression regulation upon drought stress. Copyright © The Author(s) 2020. Published by the Genetics Society of America.The CORL family of CNS-specific proteins share a Smad-binding region with mammalian SnoN and c-Ski protooncogenes. In this family Drosophila CORL has two mouse and two human relatives. Roles for the mouse and human CORL proteins are largely unknown. Based on genome-wide association studies linking the human CORL proteins Fussel15 and Fussel18 with ataxia, we tested the hypothesis that dCORL mutations will cause adult movement disorders. For our initial tests, we conducted side by side studies of adults with the small deletion Df(4)dCORL and eight control strains. We found that deletion mutants exhibit three types of behavioral plasticity. First, significant climbing defects attributable to loss of dCORL are eliminated by age. Second, significant phototaxis defects due to loss of dCORL are partially ameliorated by age and are not due to faulty photoreceptors. Third, Df(4)dCORL males raised in groups have a lower courtship index than males raised as singles though this defect is not due to loss of dCORL Subsequent tests showed that the climbing and phototaxis defects were phenocpied by dCORL21B and dCORL23C two CRISPR generated mutations. Overall, the finding that adult movement defects due to loss of dCORL are subject to age-dependent plasticity suggests new hypotheses for CORL functions in flies and mammals. Copyright © The Author(s) 2020. Published by the Genetics Society of America.Cystic parathyroid adenomas are one of the rare causes of neck masses. Due to its rarity, it causes misdiagnosis and wrong treatments and has undesirable consequences. The measurement of parathyroid hormone in fine-needle aspiration washout fluid is a minimally invasive, safe method for the diagnosis of parathyroid cysts and seems to be more useful than Tc-99m sestamibi (MIBI) parathyroid single photon emission computed tomography (SPECT)/CT. © BMJ Publishing Group Limited 2020. No commercial re-use. See rights and permissions. Published by BMJ.Diffuse alveolar haemorrhage (DAH) is a rare complication of fat embolism syndrome leading to severe hypoxaemia due to the effusion of blood into the alveoli from the damaged pulmonary microvasculature. The management is usually supportive with patients being nursed in supine position. The use of prone position ventilation in a DAH has rarely been reported before. We report an interesting case of a 26-year-old male patient diagnosed with DAH caused by fat embolism in whom prone position ventilation improved the lung dynamics and oxygenation. © BMJ Publishing Group Limited 2020. No commercial re-use. See rights and permissions. Published by BMJ.A 73-year-old woman was admitted to the intensive care unit following vomiting and diarrhoea onset after completing oral bowel preparation prior to colonoscopy to investigate haematochezia. She had a history of severe chronic obstructive pulmonary disease, Crohn's disease, diverticular disease, hypertension and dyslipidaemia. She was resuscitated with intravenous fluids, antibiotics and required epinephrine, norepinephrine and vasopressin infusions. She improved over her 4-day intensive care admission and was discharged to the general medical ward, but ultimately died 19 days after presentation. © BMJ Publishing Group Limited 2020. No commercial re-use. See rights and permissions. Published by BMJ.
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