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https://www.readbyqxmd.com/read/28645211/akr1c3-mediated-adipose-androgen-generation-drives-lipotoxicity-in-women-with-polycystic-ovary-syndrome
#1
Michael W O'Reilly, Punith Kempegowda, Mark Walsh, Angela E Taylor, Konstantinos N Manolopoulos, J William Allwood, Robert K Semple, Daniel Hebenstreit, Warwick B Dunn, Jeremy W Tomlinson, Wiebke Arlt
Context: Polycystic ovary syndrome (PCOS) is a prevalent metabolic disorder, occurring in up to 10% of women of reproductive age. PCOS is associated with insulin resistance and cardiovascular risk. Androgen excess is a defining feature of PCOS and has been suggested as causally associated with insulin resistance; however, mechanistic evidence linking both is lacking. We hypothesized that adipose tissue is an important site linking androgen activation and metabolic dysfunction in PCOS...
June 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28645209/genome-wide-mapping-of-in-vivo-er%C3%AE-binding-sites-in-male-mouse-efferent-ductules
#2
Guangxin Yao, Shuanggang Hu, Lu Yu, Yanfei Ru, Charlie Degui Chen, Qiang Liu, Yonglian Zhang
As an important nuclear hormone receptor, estrogen receptor alpha (ERα), which is encoded by Esr1 gene, regulates the expression of hundreds of genes in a stimulus-specific, temporal and tissue-specific fashion, mainly by binding to specific DNA sequences-estrogen response elements (EREs). As an important estrogen target tissue in males, the function of the efferent ductules relies on the presence of the ERα protein, but the underlying regulatory mechanisms are poorly illustrated. In this study, genome-wide ERα-binding sites in mouse efferent ductules were mapped by ChIP-seq...
June 22, 2017: Endocrinology
https://www.readbyqxmd.com/read/28645206/catheter-based-renal-denervation-as-therapy-for-chronic-severe-kidney-related-pain
#3
Rosa L de Jager, Niek F Casteleijn, Esther de Beus, Michiel L Bots, Evert-Jan E Vonken, Ron T Gansevoort, Peter J Blankestijn
Background: Loin pain haematuria syndrome (LPHS) and autosomal dominant polycystic kidney disease (ADPKD) are the most important non-urological conditions to cause chronic severe kidney-related pain. Multidisciplinary programmes and surgical methods have shown inconsistent results with respect to pain reduction. Percutaneous catheter-based renal denervation (RDN) could be a less invasive treatment option for these patients. Methods: Our aim was to explore the change in perceived pain and use of analgesic medication from baseline to 3, 6 and 12 months after RDN...
June 22, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28645205/aquaporin-positron-emission-tomography-differentiates-between-grade-iii-and-iv-human-astrocytoma
#4
Yuji Suzuki, Yukihiro Nakamura, Kenichi Yamada, Satoshi Kurabe, Kouichirou Okamoto, Hiroshi Aoki, Hiroki Kitaura, Akiyoshi Kakita, Yukihiko Fujii, Vincent J Huber, Hironaka Igarashi, Ingrid L Kwee, Tsutomu Nakada
BACKGROUND: Aquaporin (AQP) water channels play a significant role in mesenchymal microvascular proliferation and infiltrative growth. AQPs are highly expressed in malignant astrocytomas, and a positive correlation is observed between their expression levels and histological tumor grade. OBJECTIVE: To examine the utility of aquaporin positron emission tomography (PET) for differentiating between astrocytoma grade III and grade IV using the AQP radioligand [ 11 C]TGN-020...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645202/effects-of-mobility-and-multimorbidity-on-inpatient-and-post-acute-health-care-utilization
#5
Kristine E Ensrud, Li-Yung Lui, Lisa Langsetmo, Tien N Vo, Brent C Taylor, Peggy M Cawthon, Meredith L Kilgore, Charles E McCulloch, Jane A Cauley, Marcia L Stefanick, Kristine Yaffe, Eric S Orwoll, John T Schousboe
Background: This study examines effects of mobility and multimorbidity on hospitalization and inpatient and post-acute care (PAC) facility days among older men. Methods: Prospective study of 1701 men (mean age 79.3 years) participating in MrOS Study Year 7 (Y7) examination (2007-2008) linked with their Medicare claims. At Y7, mobility ascertained by usual gait speed and categorized as poor, intermediate, or good. Multimorbidity quantified by applying Elixhauser algorithm to inpatient and outpatient claims and categorized as none, mild-moderate, or high...
June 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28645200/prognostic-awareness-prognostic-communication-and-cognitive-function-in-patients-with-malignant-glioma
#6
Eli L Diamond, Holly G Prigerson, Denise C Correa, Anne Reiner, Katherine Panageas, Maria Kryza-Lacombe, Justin Buthorn, Elizabeth C Neil, Alex M Miller, Lisa M DeAngelis, Allison J Applebaum
Background: Malignant glioma (MG) is a devastating neuro-oncologic disease with almost invariably poor prognosis. Prognostic awareness (PA) is the awareness of incurable disease and shortened life-expectancy (LE). Accurate PA is associated with favorable psychological outcomes at the end-of-life (EOL) for patients with cancer, however little is known about PA or prognostic communication in MG. Moreover, research has yet to evaluate the impact of cognitive impairment on PA and preferred forms of communication...
June 22, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28645196/antagonistic-regulation-of-cyclin-expression-by-the-bzip-transcription-factors-pcr1-and-atf1-during-g2-m-transition
#7
Sushobhana Bandyopadhyay, Protiti Maiti Ghosh, Sohini Basu, Madhurima Paul, Syed Benazir Alam, Elizabeth Das, Geetanjali Sundaram
The transcription factor Atf1 is known to promote cell survival during various stress conditions in Schizosaccharomyces pombe by activating the expression of appropriate genes. It can also activate transcription of other important genes responsible for cell cycle progression. An Atf1 dependent increase in the expression of cell division promoting genes will oppose activation of checkpoints necessary to ensure repairs and cell survival during stress. Hence selective inhibition of the cell cycle related functions of Atf1 would be indispensable for cellular survival during stress...
June 22, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28645194/predictors-of-treatment-response-and-survival-outcomes-in-meningioma-recurrence-with-atypical-or-anaplastic-histology
#8
Muhammad O Chohan, Christopher T Ryan, Ranjodh Singh, Ryan M Lanning, Anne S Reiner, Marc K Rosenblum, Viviane Tabar, Philip H Gutin
BACKGROUND: Recurrence rates for atypical and anaplastic meningiomas range between 9% and 50% after gross total resection and between 36% and 83% after subtotal resection. Optimal treatment of recurrent meningiomas exhibiting atypical/anaplastic histology is complicated because they are often refractory to both surgery and radiation. OBJECTIVE: To evaluate clinical determinants of recurrence and treatment-specific outcomes in patients with recurrent meningiomas exhibiting atypical/anaplastic histology at our institution...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645188/temporal-variation-of-the-microbiome-is-dependent-on-body-region-in-a-wild-mammal-tamiasciurus-hudsonicus
#9
Colleen B Bobbie, Nadia C S Mykytczuk, Albrecht I Schulte-Hostedde
Microbial communities are increasingly being recognized as important to host health in wild mammals, but how these communities are characterized can have important consequences on the results of these studies. Previous research has explored temporal variation in microbial communities in humans and lab mammals, but few have investigated how microbiomes fluctuate in wild populations and none have examined the temporal dynamics of these fluctuations in different body regions on a wild mammal. Using Illumina MiSeq sequencing of the V3-V4 16S rRNA gene regions, we characterized the buccal and gut microbiomes of wild North American red squirrels, Tamiasciurus hudsonicus, to measure changes in these two microbiomes over short (< 2 weeks), medium (2-4 weeks) and long (> 1 month) term sampling periods...
June 22, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28645176/efficacy-of-histatin5-in-a-murine-model-of-vulvovaginal-candidiasis-caused-by-candida-albicans
#10
Hong Liao, Shanling Liu, He Wang, Hang Su, Zhenjun Liu
Histatin5 (Hst-5) is a member of the histatin family of antimicrobial peptides secreted by human parotid and submandibular glands. With the natural antibacterial activity, it plays an important role in the first-line barrier of oral cave against pathogens, especially for the fungal intrusion. In this study, we explored the utility of Hst-5 in the treatment of vulvovaginal candidiasis, a common condition of women of the childbearing age. we used a synthesized Hst-5 over five consecutive days as the topical treatment in a murine model of vulvovaginal candidiasis...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645173/spatially-resolved-metabolic-analysis-reveals-a-central-role-for-transcriptional-control-in-carbon-allocation-to-wood
#11
Melissa Roach, Stéphanie Arrivault, Amir Mahboubi, Nicole Krohn, Ronan Sulpice, Mark Stitt, Totte Niittylä
The contribution of transcriptional and post-transcriptional regulation to modifying carbon allocation to developing wood of trees is not well defined. To clarify the role of transcriptional regulation, the enzyme activity patterns of eight central primary metabolism enzymes across phloem, cambium, and developing wood of aspen (Populus tremula L.) were compared with transcript levels obtained by RNA sequencing of sequential stem sections from the same trees. Enzymes were selected on the basis of their importance in sugar metabolism and in linking primary metabolism to lignin biosynthesis...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645172/the-biogenesis-pathway-of-trna-derived-pirnas-in-bombyx-germ-cells
#12
Shozo Honda, Takuya Kawamura, Phillipe Loher, Keisuke Morichika, Isidore Rigoutsos, Yohei Kirino
Transfer RNAs (tRNAs) function in translational machinery and further serves as a source of short non-coding RNAs (ncRNAs). tRNA-derived ncRNAs show differential expression profiles and play roles in many biological processes beyond translation. Molecular mechanisms that shape and regulate their expression profiles are largely unknown. Here, we report the mechanism of biogenesis for tRNA-derived Piwi-interacting RNAs (td-piRNAs) expressed in Bombyx BmN4 cells. In the cells, two cytoplasmic tRNA species, tRNAAspGUC and tRNAHisGUG, served as major sources for td-piRNAs, which were derived from the 5΄-part of the respective tRNAs...
June 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28645167/-it-s-important-but%C3%A2-perceived-barriers-and-situational-dependencies-to-social-contact-preferences-of-nursing-home-residents
#13
Katherine M Abbott, Lauren R Bangerter, Sarah Humes, Rachel Klumpp, Kimberly Van Haitsma
Background and Objectives: U.S. Nursing homes (NH) are shifting toward a person-centered philosophy of care, where staff understand each residents preferences, goals and values, and seek to honor them throughout the care delivery process. Social interactions are a major component of life and while low rates of social interactions are typically found among NH residents, little research has examined resident preferences for specific types of social interactions. The purpose of this study is to explore, from the perspective of the NH resident, barriers to social contact preferences and situations when social preferences change...
June 22, 2017: Gerontologist
https://www.readbyqxmd.com/read/28645160/chronic-pseudomonas-aeruginosa-biofilm-infection-impairs-murine-s100a8-a9-and-neutrophil-effector-cytokines-implications-for-delayed-wound-closure
#14
Hannah Trøstrup, Christian Johann Lerche, Lars Jackie Christophersen, Kim Thomsen, Peter Østrup Jensen, Hans Petter Hougen, Niels Høiby, Claus Moser
The impact of Pseudomonas aeruginosa biofilm infections in chronic wounds and clinical implication for healing is receiving increased attention. However, the pathophysiology of host/pathogen interplay is not fully understood. By further revealing the mechanisms, necessary new treatment strategies may be identified. Since the background for chronic wounds is diverse, representative animal models are important. We assessed host response and spontaneous wound closure in the relatively resistant C3H/HeN and the susceptible BALB/c mouse strain...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645158/the-potential-for-co-evolution-of-co2-concentrating-mechanisms-and-rubisco-in-diatoms
#15
Jodi N Young, Brian M Hopkinson
Diatoms are a diverse group of unicellular algae that contribute significantly to global photosynthetic carbon fixation and export in the modern ocean, and are an important source of microfossils for paleoclimate reconstructions. Because of their importance in the environment, diatoms have been a focus of study on the physiology and ecophysiology of carbon fixation, in particular their CO2-concentrating mechanisms (CCMs) and Rubisco characteristics. While carbon fixation in diatoms is not as well understood as in certain model aquatic photoautotrophs, a greater number of species have been examined in diatoms...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645157/secretory-iga-response-against-pseudomonas-aeruginosa-in-the-upper-airways-and-the-link-with-chronic-lung-infection-in-cystic-fibrosis
#16
Renan Mauch, Claudio Rossi, Talita Aiello, José Ribeiro, Antonio Ribeiro, Niels Høiby, Carlos Levy
We assessed the diagnostic ability of an ELISA test for measurement of specific secretory IgA (sIgA) in saliva to identify Cystic Fibrosis (CF) patients with P. aeruginosa chronic lung infection and intermittent lung colonization. A total of 102 Brazilian CF patients and 53 healthy controls were included. Specific serum IgG response was used as a surrogate to distinguish CF patients according to their P. aeruginosa colonization/infection status. The rate of sIgA positivity was 87.1% in CF chronically infected patients (Median value = 181...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645153/defective-mitochondrial-rna-processing-due-to-pnpt1-variants-causes-leigh-syndrome
#17
Sanna Matilainen, Christopher J Carroll, Uwe Richter, Liliya Euro, Max Pohjanpelto, Anders Paetau, Pirjo Isohanni, Anu Suomalainen
Leigh syndrome is a severe infantile encephalopathy with an exceptionally variable genetic background. We studied the exome of a child manifesting with Leigh syndrome at one month of age and progressing to death by the age of 2.4 years, and identified novel compound heterozygous variants in PNPT1, encoding the polynucleotide phosphorylase (PNPase). Expression of the wild type PNPT1 in the subject's myoblasts functionally complemented the defects, and the pathogenicity was further supported by structural predictions and protein and RNA analyses...
June 22, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28645142/polyphyly-of-arundinoideae-poaceae-and-evolution-of-the-twisted-geniculate-lemma-awn
#18
J K Teisher, M R McKain, B A Schaal, E A Kellogg
Background and Aims: Subfamily Arundinoideae represents one of the last unsolved taxonomic mysteries in the grass family (Poaceae) due to the narrow and remote distributions of many of its 19 morphologically and ecologically heterogeneous genera. Resolving the phylogenetic relationships of these genera could have substantial implications for understanding character evolution in the grasses, for example the twisted geniculate awn - a hygroscopic awn that has been shown to be important in seed germination for some grass species...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28645125/-epidemiology-of-parkinson-s-disease-and-current-concepts%C3%A2-of-outpatient-care-in-germany
#19
Lars Tönges, Reinhard Ehret, Michael Lorrain, Peter Riederer, Martina Müngersdorf
The ambulatory care of patients with Parkinson's disease (PD) in Germany has been established for a long time. As the prevalence of Parkinson's disease continues to increase, the outpatient neurological sector is becoming more and more important and needs to adapt itself to current needs. This includes an optimization of the care structures for Parkinson's patients as well as adequate concepts for the execution of differentiated diagnostics and therapy. For many patients care is provided by non-specialized neurological practices or general practitioners, without exchange of views with neurologists or a specialized university outpatient clinic for movement disorders...
June 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28645118/outcome-of-patients-treated-for-myelodysplastic-syndromes-with-5q-deletion-after-failure-of-lenalidomide-therapy
#20
Thomas Prebet, Thomas Cluzeau, Sophie Park, Mikkael A Sekeres, Ulrich Germing, Lionel Ades, Uwe Platzbecker, Katharina Gotze, Norbert Vey, Esther Oliva, Mary M Sugrue, Cecile Bally, Charikleia Kelaidi, Najla Al Ali, Pierre Fenaux, Steven D Gore, Rami Komrokji
While lenalidomide (LEN) is the standard of care for the lower-risk myelodysplastic syndromes (MDS) patients with deletion 5q, 35% will not respond to or do not tolerate the drug. Moreover, most of the patients will lose their response after a few years. Defining the outcome of patients with LEN failure and determining the impact of subsequent therapies is therefore important to develop alternative strategies. Based on an international collaboration, we were able to compile a total of 392 patient cases of lower-risk MDS patients with 5q deletion and to analyze their outcome after failure of lenalidomide...
June 14, 2017: Oncotarget
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