keyword
MENU ▼
Read by QxMD icon Read
search

PIF

keyword
https://www.readbyqxmd.com/read/29139123/new-insights-into-the-mechanisms-of-phytochrome-cryptochrome-coaction
#1
REVIEW
Qin Wang, Qing Liu, Xu Wang, Zecheng Zuo, Yoshito Oka, Chentao Lin
Contents I. II. III. IV. SUMMARY: Plants perceive and respond to light signals by multiple sensory photoreceptors, including phytochromes and cryptochromes, which absorb different wavelengths of light to regulate genome expression and plant development. Photophysiological analyses have long revealed the coordinated actions of different photoreceptors, a phenomenon referred to as the photoreceptor coaction. The mechanistic explanations of photoreceptor coactions are not fully understood...
November 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/29134933/baculoviruses-require-an-intact-odv-entry-complex-to-resist-proteolytic-degradation-of-per-os-infectivity-factors-by-co-occluded-proteases-from-the-larval-host
#2
Bob Boogaard, Jan W M van Lent, David A Theilmann, Martin A Erlandson, Monique M van Oers
Baculoviruses orally infect caterpillars in the form of occlusion-derived viruses (ODVs). The ODV-envelope contains a number of proteins which are essential for oral infectivity, called per os infectivity factors (PIFs). Most of these PIFs are involved in the formation of an ODV-entry complex that consists of a stable core, formed by PIF1, PIF2, PIF3 and PIF4, and the more loosely associated PIFs P74 (PIF0) and P95 (PIF8). PIF1, PIF2 and PIF3 are essential for formation of the stable core, whereas deletion of the pif4 gene results in the formation of a smaller complex...
November 14, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29128910/allogeneic-ovarian-transplantation-using-immunomodulator-preimplantation-factor-pif-as-monotherapy-restored-ovarian-function-in-olive-baboon
#3
Michael Feichtinger, Eytan R Barnea, Atunga Nyachieo, Mats Brännström, S Samuel Kim
PURPOSE: Allogeneic ovarian transplantation may be an alternative in the future to oocyte donation in women with premature ovarian failure. The objectives of this study were to (a) evaluate allotransplantation feasibility for restoration of ovarian function and (b) assess efficacy of synthetic preimplantation factor (PIF) monotherapy as sole immune-acceptance regimen. METHODS: This is an experimental animal study using non-human primates (Papio anubis). Allogeneic orthotopic ovarian tissue transplantation was performed in two female olive baboons...
November 11, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29102134/inactivation-of-cronobacter-malonaticus-cells-and-inhibition-of-its-biofilm-formation-exposed-to-hydrogen-peroxide-stress
#4
Yingwang Ye, Maofeng Zhang, Rui Jiao, Na Ling, Xiyan Zhang, Liaowang Tong, Haiyang Zeng, Jumei Zhang, Qingping Wu
Presence of Cronobacter malonaticus in powdered infant formula (PIF) poses a high risk to infant and public health. Cronobacter malonaticus has been widely distributed in food and food processing environments, and the true origin of C. malonaticus in PIF is poorly understood. Control and prevention of C. malonaticus is necessary for achieving microbial safety of PIF. However, little information about decontamination of C. malonaticus is available. In this study, effects of hydrogen peroxide on inactivation and morphological changes of C...
October 25, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29089940/prevalence-molecular-characterization-and-antibiotic-susceptibility-of-cronobacter-sakazakii-isolates-from-powdered-infant-formula-collected-from-chinese-retail-markets
#5
Peng Fei, Yichao Jiang, Yan Jiang, Xiujuan Yuan, Tongxiang Yang, Junliang Chen, Ziyuan Wang, Huaibin Kang, Stephen J Forsythe
Cronobacter sakazakii is an opportunistic pathogen that causes severe infections in neonates and infants through contaminated powdered infant formula (PIF). Therefore, the aim of this study was a large-scale study on determine the prevalence, molecular characterization and antibiotic susceptibility of C. sakazakii isolates from PIF purchased from Chinese retail markets. Two thousand and twenty PIF samples were collected from different institutions. Fifty-six C. sakazakii strains were isolated, and identified using fusA sequencing analysis, giving a contamination rate of 2...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29078307/efficient-synthesis-of-phycocyanobilin-in-mammalian-cells-for-optogenetic-control-of-cell-signaling
#6
Youichi Uda, Yuhei Goto, Shigekazu Oda, Takayuki Kohchi, Michiyuki Matsuda, Kazuhiro Aoki
Optogenetics is a powerful tool to precisely manipulate cell signaling in space and time. For example, protein activity can be regulated by several light-induced dimerization (LID) systems. Among them, the phytochrome B (PhyB)-phytochrome-interacting factor (PIF) system is the only available LID system controlled by red and far-red lights. However, the PhyB-PIF system requires phycocyanobilin (PCB) or phytochromobilin as a chromophore, which must be artificially added to mammalian cells. Here, we report an expression vector that coexpresses HO1 and PcyA with Ferredoxin and Ferredoxin-NADP+ reductase for the efficient synthesis of PCB in the mitochondria of mammalian cells...
October 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29073617/preimplantation-factor-pif-promotes-hla-g-e-f-c-expression-in-jeg-3-choriocarcinoma-cells-and-endogenous-progesterone-activity
#7
Miya Soukaina Hakam, Jose Maria Miranda-Sayago, Soren Hayrabedyan, Krassimira Todorova, Patrick Simon Spencer, Asma Jabeen, Eytan R Barnea, Nelson Fernandez
BACKGROUND/AIMS: Pregnancy success requires mandatory maternal tolerance of the semi/ allogeneic embryo involving embryo-derived signals. Expression levels of PreImplantation Factor (PIF), a novel peptide secreted by viable embryos, correlate with embryo development, and its early detection in circulation correlates with a favourable pregnancy outcome. PIF enhances endometrial receptivity to promote embryo implantation. Via the p53 pathway, it increases trophoblast invasion, improving cell survival / immune privilege...
October 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29066729/a-quantitative-model-of-the-phytochrome-pif-light-signalling-initiating-chloroplast-development
#8
Carole Dubreuil, Yan Ji, Åsa Strand, Andreas Grönlund
The components required for photosynthesis are encoded in two separate genomes, the nuclear and the plastid. To address how synchronization of the two genomes involved can be attained in early light-signalling during chloroplast development we have formulated and experimentally tested a mathematical model simulating light sensing and the following signalling response. The model includes phytochrome B (PhyB), the phytochrome interacting factor 3 (PIF3) and putative regulatory targets of PIF3. Closed expressions of the phyB and PIF3 concentrations after light exposure are derived, which capture the relevant timescales in the response of genes regulated by PIF3...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29065432/preimplantation-factor-pif-regulates-stress-induced-adrenal-steroidogenesis-and-anti-inflammatory-cytokines-potential-application-for-bioartificial-adrenal-transplant
#9
Mariya Balyura, Evgeny Gelfgat, Enrico Ullmann, Barbara Ludwig, Eytan R Barnea, Stefan R Bornstein
The main treatment algorithm for adrenal insufficiency is hormonal replacement, however, inadequate hormone substitution often leads to severe side effects. Adrenal cell transplantation could be a more effective alternative but would require life-long immune suppressive therapy. PreImplantation Factor (PIF) is an endogenous peptide secreted by viable human embryos that leads to maternal tolerance without immunosuppression. PIF could be effective for xenogeneic cell transplantation such as of bovine adrenocortical cells (BAC), which are used for bioartificial adrenal gland development that may more effectively restore complex adrenal functions...
October 24, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29055558/pelvic-fractures-after-definitive-and-postoperative-radiotherapy-for-cervical-cancer-a-retrospective-analysis-of-risk-factors
#10
Kasumi Yamamoto, Shoji Nagao, Kazuhiro Suzuki, Ai Kogiku, Tokihiro Senda, Hiroko Yano, Miho Kitai, Takaya Shiozaki, Kazuko Matsuoka, Satoshi Yamaguchi
OBJECTIVES: This study clarified the incidence of and identified the risk factors for post-radiation pelvic insufficiency fractures (PIFs) in women who received postoperative definitive or adjuvant radiotherapy (RT) for cervical cancer. PATIENTS AND METHODS: The medical records and data of imaging studies, including computed tomography scan and magnetic resonance imaging, of women with cervical cancer who received external-beam RT for the entire pelvic area between January 2003 and December 2012 at our institution were reviewed...
October 18, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29036463/multiple-links-between-shade-avoidance-and-auxin-networks
#11
María José Iglesias, Romina Sellaro, Matias D Zurbriggen, Jorge José Casal
Auxin has emerged as a key player in the adjustment of plant morphology to the challenge imposed by variable environmental conditions. Shade-avoidance responses, including the promotion of stem and petiole growth, leaf hyponasty, and the inhibition of branching, involve an intimate connection between light and auxin signalling. Low activity of photo-sensory receptors caused by the presence of neighbouring vegetation enhances the activity of PHYTOCHROME INTERACTING FACTORs (PIFs), which directly promote the expression of genes involved in auxin biosynthesis, conjugation, transport, perception, and signalling...
September 27, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28992776/ranzcp-congress-2017-an-invaluable-experience-says-pif-scholarship-recipient-sumana-thomson
#12
(no author information available yet)
No abstract text is available yet for this article.
October 2017: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/28985148/phytochrome-interacting-factors-from-physcomitrella-patens-are-active-in-arabidopsis-and-complement-the-pif-quadruple-mutant
#13
Tengfei Xu, Andreas Hiltbrunner
Phytochromes are red/far-red light receptors in plants involved in the regulation of growth and development in response to changes in the ambient environment. An important mode of action of plant phytochromes depends on their light-regulated relocation from the cytosol into the nucleus and control of gene expression; in addition, there is also evidence for a cytosolic or plasma membrane associated function of phytochromes in different species. The PHYTOCHROME INTERACTING FACTORs (PIFs) form a subgroup of the bHLH transcription factors and it is well established that PIFs are key components of phytochrome downstream signalling in the nucleus of seed plants...
October 6, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28979257/multiplexed-lateral-flow-test-for-detection-and-differentiation-of-cronobacter-sakazakii-serotypes-o1-and-o2
#14
Eva J Scharinger, Richard Dietrich, Tobias Wittwer, Erwin Märtlbauer, Kristina Schauer
The ubiquitous and opportunistic pathogen Cronobacter sakazakii is responsible for severe meningitis, sepsis, and necrotizing enterocolitis in neonates and infants associated with ingestion of contaminated powdered infant formula (PIF). The current ISO method for isolation and detection of Cronobacter spp. is laborious, time-consuming and expensive. In this study, a multiplexed lateral flow test strip was developed to rapidly detect and simultaneously serotype O1 and O2 C. sakazakii serotypes. The assay is based on two monoclonal antibodies (MAb) that specifically bind to the lipopolysaccharides (LPS) of these pathogens...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28970845/comprehensive-analysis-of-dwarf14-like2-dlk2-reveals-its-functional-divergence-from-strigolactone-related-paralogs
#15
Attila Végh, Norbert Incze, Attila Fábián, Heqiang Huo, Kent J Bradford, Ervin Balázs, Vilmos Soós
Strigolactones (SLs) and related butenolides, originally identified as active seed germination stimulants of parasitic weeds, play important roles in many aspects of plant development. Two members of the D14 α/β hydrolase protein family, DWARF14 (D14) and KARRIKIN INSENSITIVE2 (KAI2) are essential for SL/butenolide signaling. The third member of the family in Arabidopsis, DWARF 14-LIKE2 (DLK2) is structurally very similar to D14 and KAI2, but its function is unknown. We demonstrated that DLK2 does not bind nor hydrolyze natural (+)5-deoxystrigol [(+)5DS], and weakly hydrolyzes non-natural strigolactone (-)5DS...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28970478/in-vivo-gibberellin-gradients-visualized-in-rapidly-elongating-tissues
#16
Annalisa Rizza, Ankit Walia, Viviane Lanquar, Wolf B Frommer, Alexander M Jones
The phytohormone gibberellin (GA) is a key regulator of plant growth and development. Although the upstream regulation and downstream responses to GA vary across cells and tissues, developmental stages and environmental conditions, the spatiotemporal distribution of GA in vivo remains unclear. Using a combinatorial screen in yeast, we engineered an optogenetic biosensor, GIBBERELLIN PERCEPTION SENSOR 1 (GPS1), that senses nanomolar levels of bioactive GAs. Arabidopsis thaliana plants expressing a nuclear localized GPS1 report on GAs at the cellular level...
October 2, 2017: Nature Plants
https://www.readbyqxmd.com/read/28967478/partial-neuromuscular-block-impairs-arytenoid-abduction-during-hypercarbic-challenge-in-anesthetized-dogs
#17
Chia T Tseng, Daniel M Sakai, Madeline Libin, Monika Mostowy, Jonathan Cheetham, Luis Campoy, Robin D Gleed, Manuel Martin-Flores
OBJECTIVE: To evaluate the effect of two levels of partial neuromuscular block (NMB) on arytenoid abduction, tidal volume (VT) and peak inspiratory flow (PIF) in response to a hypercarbic challenge in anesthetized dogs. STUDY DESIGN: Prospective laboratory study. ANIMALS: Eleven healthy male Beagle dogs aged 3-5 years. METHODS: Dogs were anesthetized with propofol and dexmedetomidine infusions. The rima glottidis was observed via an endoscope placed through a laryngeal mask airway...
June 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28942231/the-folded-postauricular-flap-a-novel-approach-to-reconstruction-of-large-full-thickness-defects-of-the-conchal-bowl
#18
Ansley M Roche, Martha Griffin, Ron Shelton, Mark L Urken
Extensive subtotal full-thickness auriculectomy defects pose a challenge for the reconstructive surgeon. The posterior island flap (PIF), based on the posterior auricular artery, has been described as a reconstructive option for auricular defects, with reports describing a "pull-through" or "revolving door" technique to reconstruct subtotal partial thickness and full thickness auricular defects. These techniques may result in posterior "pinning" of the auricle. This patient is an 87-year-old male who presented after Mohs excision of squamous cell carcinoma of the conchal bowl, which resulted in a 4x4cm subtotal auriculectomy defect...
September 19, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28928761/hormonal-regulation-in-shade-avoidance
#19
REVIEW
Chuanwei Yang, Lin Li
At high vegetation density, shade-intolerant plants sense a reduction in the red (660 nm) to far-red (730 nm) light ratio (R/FR) in addition to a general reduction in light intensity. These light signals trigger a spectrum of morphological changes manifested by growth of stem-like tissue (hypocotyl, petiole, etc.) instead of harvestable organs (leaves, fruits, seeds, etc.)-namely, shade avoidance syndrome (SAS). Common phenotypical changes related to SAS are changes in leaf hyponasty, an increase in hypocotyl and internode elongation and extended petioles...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28902871/preimplantation-factor-in-endometriosis-a-potential-role-in-inducing-immune-privilege-for-ectopic-endometrium
#20
Marco Sbracia, Brett McKinnon, Fabio Scarpellini, Daniela Marconi, Gabriele Rossi, Cedric Simmilion, Michael D Mueller, Eytan R Barnea, Martin Mueller
Endometriosis is a chronic inflammatory condition characterised by the growth of endometrial epithelial and stromal cells outside the uterine cavity. In addition to Sampson's theory of retrograde menstruation, endometriosis pathogenesis is facilitated by a privileged inflammatory microenvironment, with T regulatory FoxP3+ expressing T cells (Tregs) being a significant factor. PreImplantation Factor (PIF) is a peptide essential for pregnancy recognition and development. An immune modulatory function of the synthetic PIF analog (sPIF) has been successfully confirmed in multiple animal models...
2017: PloS One
keyword
keyword
24318
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"