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https://www.readbyqxmd.com/read/28821570/juvenile-hormone-but-not-nutrition-or-social-cues-affects-reproductive-maturation-in-solitary-alkali-bees-nomia-melanderi
#1
Karen M Kapheim, Makenna M Johnson
Eusocial insect colonies are defined by extreme variation in reproductive activity among castes, but the ancestral conditions from which this variation arose are unknown. Investigating the factors that contribute to variation in reproductive physiology among solitary insects that are closely related to social species can help to fill this gap. We experimentally tested the role of nutrition, juvenile hormone, and social cues on reproductive maturation in solitary alkali bees (Halictidae: Nomia melanderi). We find that alkali bee females emerge from overwintering with small Dufour's glands and small ovaries, containing oocytes in the early stages of development...
August 18, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28821170/esc-joint-working-groups-on-cardiovascular-surgery-and-the-cellular-biology-of-the-heart-position-paper-perioperative-myocardial-injury-and-infarction-in-patients-undergoing-coronary-artery-bypass-graft-surgery
#2
Matthias Thielmann, Vikram Sharma, Nawwar Al-Attar, Heerajnarain Bulluck, Gianluigi Bisleri, Jeroen Jh Bunge, Martin Czerny, Péter Ferdinandy, Ulrich H Frey, Gerd Heusch, Johannes Holfeld, Petra Kleinbongard, Gudrun Kunst, Irene Lang, Salvatore Lentini, Rosalinda Madonna, Patrick Meybohm, Claudio Muneretto, Jean-Francois Obadia, Cinzia Perrino, Fabrice Prunier, Joost P G Sluijter, Linda W Van Laake, Miguel Sousa-Uva, Derek J Hausenloy
No abstract text is available yet for this article.
August 14, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28807338/molecular-pathology-diagnosis-of-diffuse-large-b-cell-lymphoma-using-biomed-2-clonal-gene-rearrangements
#3
Saeid Ghorbian
BACKGROUND: Clonality testing for immunoglobulin gene rearrangement analysis could be implemented effectively as a useful technique for conventional diagnosis of lymphoma. The European Biomedicine and Health Concerted Action Project BMH4-CT98-3936 (BIOMED-2) have been suggested a gold standard method to clonality detection. OBJECTIVES: We tested empirically clonality rearrangements of IGH and incomplete IGH D-J, on formalin-fixed, paraffin embedded (FFPE) tissue of patients with diffuse large B cell lymphoma (DLBCL)...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28805632/juvenile-hormone-and-hemimetabolan-eusociality-a-comparison-of-cockroaches-with-termites
#4
REVIEW
Judith Korb, Xavier Belles
Termites are social Dictyoptera that evolved eusociality independently from social Hymenoptera. They are characterized by unique developmental plasticity that is the basis of caste differentiation and social organization. As developmental plasticity is a result of endocrine regulation, in order to understand the evolution of termite sociality it is helpful to compare the endocrine underpinning of development between termites and cockroaches. Nijhout and Wheeler (1982) proposed that varying JH titers determine caste differentiation in termites...
August 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28800885/methyl-farnesoate-epoxidase-mfe-gene-expression-and-juvenile-hormone-titers-in-the-life-cycle-of-a-highly-eusocial-stingless-bee-melipona-scutellaris
#5
Carlos Antônio Mendes Cardoso-Júnior, Renato Pereira Silva, Naiara Araújo Borges, Washington João de Carvalho, S Leal Walter, Zilá Luz Paulino Simões, Marcia Maria Gentile Bitondi, Carlos Ueira Vieira, Ana Maria Bonetti, Klaus Hartfelder
In social insects, juvenile hormone (JH) has acquired novel functions related to caste determination and division of labor among workers, and this is best evidenced in the honey bee. In contrast to honey bees, stingless bees are a much more diverse group of highly eusocial bees, and the genus Melipona has long called special attention due to a proposed genetic mechanism of caste determination. Here, we examined methyl farnesoate epoxidase (mfe) gene expression, encoding an enzyme relevant for the final step in JH biosynthesis, and measured the hemolymph JH titers for all life cycle stages of Melipona scutellaris queens and workers...
August 9, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28795440/single-site-neural-tube-closure-in-human-embryos-revisited
#6
Bernadette S de Bakker, Stan Driessen, Bastiaan Jd Boukens, Maurice Jh van den Hoff, Roelof-Jan Oostra
Introduction Since the multi-site closure theory was first proposed in 1991 as explanation for the preferential localizations of neural tube defects, the closure of the neural tube has been debated. Although the multi-site closure theory is much cited in clinical literature, single-site closure is most apparent in literature concerning embryology. Inspired by Victor Hamburgers (1900-2001) statement that "our real teacher has been and still is the embryo, who is, incidentally, the only teacher who is always right", we decided to critically review both theories of neural tube closure...
August 10, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28756297/liver-disease-predicts-mortality-in-patients-with-xhim-but-can-be-prevented-by-early-hematopoietic-stem-cell-transplantation
#7
Vian Azzu, Lucinda Kennard, Beatriz Morillo-Gutierrez, Mary Slatter, J David M Edgar, Dinakantha S Kumararatne, William Jh Griffiths
In the largest detailed study of liver disease in X-linked immunodeficiency with hyper-IgM, we show that liver disease is commoner than generally recognized and that early hematopoietic stem cell transplantation may prevent liver disease progression and improve survival.
July 26, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28751377/a-mosquito-hemolymph-odorant-binding-protein-family-member-specifically-binds-juvenile-hormone
#8
Il Hwan Kim, Van Pham, Willy Jablonka, Walter G Goodman, José M C Ribeiro, John F Andersen
Juvenile hormone (JH) is a key regulator of insect development and reproduction. In adult mosquitoes, it is essential for maturation of the ovary and normal male reproductive behavior, but how JH distribution and activity is regulated after secretion is unclear. Here, we report a new type of specific JH-binding protein, given the name mosquito juvenile hormone binding protein (mJHBP), which circulates in the hemolymph of pupal and adult Aedes aegypti males and females. mJHBP, is a member of the odorant-binding protein (OBP) family, and orthologs are present in the genomes of Aedes, Culex and Anopheles mosquito species...
July 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28750998/the-alternative-splicing-of-bdtai-and-its-involvement-in-the-development-of-bactrocera-dorsalis-hendel
#9
Hong Liu, Hui-Min Li, Yong Yue, Zhong-Hao Song, Jin-Jun Wang, Wei Dou
Interest in insect metamorphosis has primarily focused on juvenile hormone (JH) and ecdysone. Compared to ecdysone signaling, the molecular action of JH is less well established because Methoprene-tolerant (Met) as the JH receptor has been identified until recently. In vitro studies have indicated that Met forms an active JH-dependent complex with one partner protein, Taiman (Tai). However, the related studies on Tai's role in insect metamorphosis are very limited. In this study, five Tai isoforms differing in C-terminal region are identified from the oriental fruit fly Bactrocera dorsalis, an important worldwide pest infesting fruits and vegetables...
July 24, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28748699/1-3-syn-diaxial-repulsion-of-typical-protecting-groups-used-in-carbohydrate-chemistry-in-3-o-substituted-derivatives-of-isopropyl-d-idopyranosides
#10
Bozhena Sergeyevna Komarova, Alexey G Gerbst, Anastasiia M Finogenova, Andrey S Dmitrenok, Yury Evgenievich Tsvetkov, Nikolay E Nifantiev
The strength of 1,3-syn-diaxial repulsion was evaluated for main types of protecting groups (alkyl, silyl and acyl) usually used in carbohydrate chemistry. As molecular probes for this study, derivatives of isopropyl 2-O-benzyl-4,6-O-benzylidene-α-D-idopyranoside bearing allyl, acetyl and tert-butyldiphenylsilyl (TBDPS) protecting groups at O-3 were prepared from p-methoxyphenyl D-galactopyranoside. The equilibrium between (O)S2 and (4)C1 conformations in these compounds was investigated using (3)JH,H and (3)JС,H coupling constants that were determined from 1D (1)H-NMR and 2D J-resolved HMBC spectra in various solvents...
July 27, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28739580/structural-insights-into-transcription-initiation-by-yeast-rna-polymerase-i
#11
Yashar Sadian, Lucas Tafur, Jan Kosinski, Arjen J Jakobi, Rene Wetzel, Katarzyna Buczak, Wim Jh Hagen, Martin Beck, Carsten Sachse, Christoph W Müller
In eukaryotic cells, RNA polymerase I (Pol I) synthesizes precursor ribosomal RNA (pre-rRNA) that is subsequently processed into mature rRNA. To initiate transcription, Pol I requires the assembly of a multi-subunit pre-initiation complex (PIC) at the ribosomal RNA promoter. In yeast, the minimal PIC includes Pol I, the transcription factor Rrn3, and Core Factor (CF) composed of subunits Rrn6, Rrn7, and Rrn11. Here, we present the cryo-EM structure of the 18-subunit yeast Pol I PIC bound to a transcription scaffold...
July 24, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28733163/rnai-mediated-knockdown-of-spook-reduces-ecdysteroid-titers-and-causes-precocious-metamorphosis-in-the-desert-locust-schistocerca-gregaria
#12
Ryohei Sugahara, Seiji Tanaka, Takahiro Shiotsuki
The Halloween gene SPOOK (SPO) is involved in the production of the active metabolite of ecdysteroid, 20-hydroxyecdysone (20E), in insects. A previous study showed that RNAi-mediated knockdown of SPO in Schistocerca gregaria last instar nymphs markedly reduced the hemolymph 20E titer, but did not affect metamorphosis. In the present study, the effects of SPO interference on development were re-examined in this locust. Injections of SPO double-stranded RNA (dsSPO) into nymphs at mid and late instars significantly delayed nymphal development and interfered with molting...
September 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28724714/sedentary-time-in-older-adults-a-critical-review-of-measurement-associations-with-health-and-interventions
#13
REVIEW
Jennifer L Copeland, Maureen C Ashe, Stuart Jh Biddle, Wendy J Brown, Matthew P Buman, Sebastien Chastin, Paul A Gardiner, Shigeru Inoue, Barbara J Jefferis, Koichiro Oka, Neville Owen, Luís B Sardinha, Dawn A Skelton, Takemi Sugiyama, Shilpa Dogra
Sedentary time (ST) is an important risk factor for a variety of health outcomes in older adults. Consensus is needed on future research directions so that collaborative and timely efforts can be made globally to address this modifiable risk factor. In this review, we examined current literature to identify gaps and inform future research priorities on ST and healthy ageing. We reviewed three primary topics:(1) the validity/reliability of self-report measurement tools, (2) the consequences of prolonged ST on geriatric-relevant health outcomes (physical function, cognitive function, mental health, incontinence and quality of life) and(3) the effectiveness of interventions to reduce ST in older adults...
July 19, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28724071/haplotypes-phased-from-population-transcriptomes-detecting-selection-in-the-initial-adaptation-of-miscanthus-lutarioriparius-to-stressful-environments
#14
Cai-Yun Zhu, Wei Liu, Li-Fang Kang, Qin Xu, Shi-Lai Xing, Yang-Yang Fan, Zhi-Hong Song, Juan Yan, Jian-Qiang Li, Tao Sang
Adaptation is a characteristic that enhances the survival or reproduction of organisms; selection is the critical process leading to adaptive evolution. Therefore, detecting selection is important in studying evolutionary biology. Changes in allele frequency are fundamental to adaptive evolution. The allele frequency of entire genes at the genomic scale is more intensive and precise for analyzing selection effects, compared with simple sequence repeat and single nucleotide polymorphism (SNP) alleles from nuclear gene fragments...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28706485/the-combination-of-rituximab-and-bendamustine-as-first-line-treatment-is-highly-effective-in-the-eradicating-minimal-residual-disease-in-follicular-lymphoma-an-italian-retrospective-study
#15
Sara Galimberti, Elena Ciabatti, Giacomo Ercolano, Susanna Grassi, Francesca Guerrini, Nadia Cecconi, Martina Rousseau, Giulia Cervetti, Francesco Mazziotta, Lorenzo Iovino, Franca Falzetti, Flavio Falcinelli, Alberto Bosi, Luigi Rigacci, Sofia Kovalchuk, Daniele Vallisa, Lucia Macchia, Eugenio Ciancia, Mario Petrini
R-Bendamustine is an effective treatment for follicular lymphoma (FL). Previous large trials demonstrated the prognostic role of the molecular minimal residual disease (MRD) during the most frequently adopted chemotherapeutic regimens, but there are not yet conclusive data about the effect of combination of rituximab (R) and bendamustine in terms of MRD clearance. Thus, the aim of this retrospective study was to assess if and in what extent the combination of rituximab and bendamustine would exert a significant reduction of the molecular disease in 48 previously untreated FL patients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28705902/long-term-risk-of-cancer-development-in-adult-patients-with-idiopathic-aplastic-anemia-after-treatment-with-anti-thymocyte-globulin
#16
Joost Gk van der Hem, Liesbeth C de Wreede, Anneke Brand, Hendrik Veelken, Jh Frederik Falkenburg, Constantijn Jm Halkes
No abstract text is available yet for this article.
July 13, 2017: Haematologica
https://www.readbyqxmd.com/read/28693514/disparities-in-dietary-intake-and-physical-activity-patterns-across-the-urbanization-divide-in-the-peruvian-andes
#17
Morgan L McCloskey, Carla E Tarazona-Meza, Jessica C Jones-Smith, Catherine H Miele, Robert H Gilman, Antonio Bernabe-Ortiz, J Jaime Miranda, William Checkley
BACKGROUND: Diet and activity are thought to worsen with urbanization, thereby increasing risk of obesity and chronic diseases. A better understanding of dietary and activity patterns across the urbanization divide may help identify pathways, and therefore intervention targets, leading to the epidemic of overweight seen in low- and middle-income populations. Therefore, we sought to characterize diet and activity in a population-based study of urban and rural residents in Puno, Peru. METHODS: We compared diet and activity in 1005 (503 urban, 502 rural) participants via a lifestyle questionnaire...
July 11, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28690396/prognostic-impact-of-urokinase-plasminogen-activator-receptor-expression-in-pancreatic-cancer-malignant-versus-stromal-cells
#18
REVIEW
Susanna Wl de Geus, Victor M Baart, Martin C Boonstra, Peter Jk Kuppen, Hendrica Ajm Prevoo, Andrew P Mazar, Bert A Bonsing, Hans Morreau, Cornelis Jh van de Velde, Alexander L Vahrmeijer, Cornelis Fm Sier
The urokinase plasminogen activator receptor (uPAR) has been proposed as a potential prognostic factor for various malignancies. The aim of this study is to assess the prognostic value of uPAR expression in neoplastic and stromal cells of patients with pancreatic adenocarcinoma. Urokinase plasminogen activator receptor expression was determined by immunohistochemistry in 122 pancreatic ductal adenocarcinomas. Kaplan-Meier and Cox regression analyses were used to determine the association with survival. Respectively 66%, 82% and 62% of patients with pancreatic cancer expressed uPAR in neoplastic cells, stromal, and in both combined...
2017: Biomarker Insights
https://www.readbyqxmd.com/read/28679490/continuous-monitoring-of-vital-signs-using-wearable-devices-on-the-general-ward-pilot-study
#19
Mariska Weenk, Harry van Goor, Bas Frietman, Lucien Jlpg Engelen, Cornelis Jhm van Laarhoven, Jan Smit, Sebastian Jh Bredie, Tom H van de Belt
BACKGROUND: Measurement of vital signs in hospitalized patients is necessary to assess the clinical situation of the patient. Early warning scores (EWS), such as the modified early warning score (MEWS), are generally calculated 3 times a day, but these may not capture early deterioration. A delay in diagnosing deterioration is associated with increased mortality. Continuous monitoring with wearable devices might detect clinical deterioration at an earlier stage, which allows clinicians to take corrective actions...
July 5, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28679117/juvenile-hormone-regulates-the-differential-expression-of-putative-juvenile-hormone-esterases-via-methoprene-tolerant-in-non-diapause-destined-and-diapause-destined-adult-female-beetle
#20
Li Zhu, Tian-Yan Yin, Dan Sun, Wen Liu, Fen Zhu, Chao-Liang Lei, Xiao-Ping Wang
Juvenile hormone (JH) plays an essential role in regulating molting, metamorphosis, reproduction, and diapause (dormancy), in many insects and crustaceans. JH esterases (JHEs) can control JH titer by regulating JH degradation. Although the biochemistry and structure of JHEs have been well studied, regulation of their expression remains unclear. We identified three putative JHEs (JHE1, JHE2, JHE3) in the cabbage beetle Colaphellus bowringi, and investigated the regulation of their expression by JH signaling in non-diapause-destined (NDD, reproductive) and diapause-destined (DD) female adults...
July 2, 2017: Gene
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