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https://www.readbyqxmd.com/read/28900001/samd7-is-a-cell-type-specific-prc1-component-essential-for-establishing-retinal-rod-photoreceptor-identity
#1
Yoshihiro Omori, Shun Kubo, Tetsuo Kon, Mayu Furuhashi, Hirotaka Narita, Taro Kominami, Akiko Ueno, Ryotaro Tsutsumi, Taro Chaya, Haruka Yamamoto, Isao Suetake, Shinji Ueno, Haruhiko Koseki, Atsushi Nakagawa, Takahisa Furukawa
Precise transcriptional regulation controlled by a transcription factor network is known to be crucial for establishing correct neuronal cell identities and functions in the CNS. In the retina, the expression of various cone and rod photoreceptor cell genes is regulated by multiple transcription factors; however, the role of epigenetic regulation in photoreceptor cell gene expression has been poorly understood. Here, we found that Samd7, a rod-enriched sterile alpha domain (SAM) domain protein, is essential for silencing nonrod gene expression through H3K27me3 regulation in rod photoreceptor cells...
September 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28899920/the-trpm1-channel-is-required-for-development-of-the-rod-on-bipolar-cell-aii-amacrine-cell-pathway-in-the-retinal-circuit
#2
Takashi Kozuka, Taro Chaya, Fuminobu Tamalu, Mariko Shimada, Kayo Fujimaki-Aoba, Ryusuke Kuwahara, Shu-Ichi Watanabe, Takahisa Furukawa
Neurotransmission plays an essential role in neural circuit formation in the central nervous system. Although neurotransmission has been recently clarified as a key modulator of retinal circuit development, the roles of individual synaptic transmissions are not yet fully understood. In the current study, we investigated the role of neurotransmission from photoreceptor cells to ON bipolar cells in development using mutant mouse lines of both sexes in which this transmission is abrogated. We found that deletion of the ON bipolar cation channel TRPM1 results in the abnormal contraction of rod bipolar terminals and a decreased number of their synaptic connections with amacrine cells...
September 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28819456/therapeutic-effect-of-astroglia-like-mesenchymal-stem-cells-expressing-glutamate-transporter-in-a-genetic-rat-model-of-depression
#3
Amit Shwartz, Oshra Betzer, Noam Kronfeld, Gila Kazimirsky, Simona Cazacu, Susan Finniss, Hae Kyung Lee, Menachem Motiei, Shani Yael Dagan, Rachela Popovtzer, Chaya Brodie, Gal Yadid
Recent studies have proposed that abnormal glutamatergic neurotransmission and glial pathology play an important role in the etiology and manifestation of depression. It was postulated that restoration of normal glutamatergic transmission, by enhancing glutamate uptake, may have a beneficial effect on depression. We examined this hypothesis using unique human glial-like mesenchymal stem cells (MSCs), which in addition to inherent properties of migration to regions of injury and secretion of neurotrophic factors, were differentiated to express high levels of functional glutamate transporters (excitatory amino acid transporters; EAAT)...
2017: Theranostics
https://www.readbyqxmd.com/read/28804950/non-invasive-assessment-of-adrenocortical-function-as-a-measure-of-stress-in-the-endangered-golden-langur
#4
Jatin Sarmah, Chaya R Hazarika, Elizabeth V Berkeley, Stefanie B Ganswindt, Andre Ganswindt
The golden langur (Trachypithecus geei) is an endangered primate endemic to northern India and Bhutan. The main stressors to the species are habitat degradation and fragmentation. Non-invasive fecal glucocorticoid metabolite (fGCM) analysis is a powerful tool for assessing stress associated with environmental disturbances in wildlife. However, interspecific differences in glucocorticoid metabolism require careful selection of the antibody used in their quantification. The goals of this study were to: 1) validate an enzyme immunoassay (EIA) to determine fecal GC metabolite (fGCM) concentrations in the golden langur and 2) compare fGCM concentrations between golden langurs living under different environmental conditions...
July 2017: Zoo Biology
https://www.readbyqxmd.com/read/28794536/combined-spinal-epidural-anaesthesia-in-a-case-of-primigravida-with-coarctation-of-aorta-with-severe-hypertension-for-elective-lower-segment-caesarean-section
#5
Nupur Dua, Bk Ashok Kumar, S Chaya, Tejal N Jivrajani
No abstract text is available yet for this article.
July 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28766551/mutation-in-the-cox4i1-gene-is-associated-with-short-stature-poor-weight-gain-and-increased-chromosomal-breaks-simulating-fanconi-anemia
#6
Bassam Abu-Libdeh, Liza Douiev, Sarah Amro, Maher Shahrour, Asaf Ta-Shma, Chaya Miller, Orly Elpeleg, Ann Saada
We describe a novel autosomal recessive form of mitochondrial disease in a child with short stature, poor weight gain, and mild dysmorphic features with highly suspected Fanconi anemia due to a mutation in COX4I1 gene. Whole Exome Sequencing was performed then followed by Sanger confirmation, identified a K101N mutation in COX4I1, segregating with the disease. This nuclear gene encodes the common isoform of cytochrome c oxidase (COX) subunit 4 (COX 4-1), an integral regulatory part of COX (respiratory chain complex IV) the terminal electron acceptor of the mitochondrial respiratory chain...
October 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28751349/challenges-and-pitfalls-of-antipsychotic-prescribing-in-people-with-learning-disability
#7
Regi T Alexander, Rohit Shankar, Sally A Cooper, Sabyasachi Bhaumik, Richard Hastings, Chaya L Kapugama, Samuel J Tromans, Ashok Roy
No abstract text is available yet for this article.
August 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28746339/openmm-7-rapid-development-of-high-performance-algorithms-for-molecular-dynamics
#8
Peter Eastman, Jason Swails, John D Chodera, Robert T McGibbon, Yutong Zhao, Kyle A Beauchamp, Lee-Ping Wang, Andrew C Simmonett, Matthew P Harrigan, Chaya D Stern, Rafal P Wiewiora, Bernard R Brooks, Vijay S Pande
OpenMM is a molecular dynamics simulation toolkit with a unique focus on extensibility. It allows users to easily add new features, including forces with novel functional forms, new integration algorithms, and new simulation protocols. Those features automatically work on all supported hardware types (including both CPUs and GPUs) and perform well on all of them. In many cases they require minimal coding, just a mathematical description of the desired function. They also require no modification to OpenMM itself and can be distributed independently of OpenMM...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28744186/breeding-of-a-new-potato-variety-nagasaki-kogane-with-high-eating-quality-high-carotenoid-content-and-resistance-to-diseases-and-pests
#9
Yu Sakamoto, Kazuyuki Mori, Yuuki Matsuo, Nobuhiro Mukojima, Wataru Watanabe, Norio Sobaru, Seiji Tamiya, Takashi Nakao, Kazuya Hayashi, Hitomi Watanuki, Kazuhiro Nara, Kaoru Yamazaki, Masataka Chaya
'Nagasaki Kogane' is a new potato variety bred from a cross between 'Saikai 35' as a female parent and 'Saikai 33' as a male. 'Saikai 35' is resistant to bacterial wilt, contains the H1 and Rychc genes for resistance to the potato cyst nematode (PCN) and potato virus Y (PVY), respectively, and has high carotenoid content, while 'Saikai 33' has large and high-yielding tubers and is resistant to both bacterial wilt and PCN. The carotenoid content of 'Nagasaki Kogane' is higher than that of 'Dejima', a common double cropping variety...
June 2017: Breeding Science
https://www.readbyqxmd.com/read/28740263/a-gene-encoding-maize-caffeoyl-coa-o-methyltransferase-confers-quantitative-resistance-to-multiple-pathogens
#10
Qin Yang, Yijian He, Mercy Kabahuma, Timothy Chaya, Amy Kelly, Eli Borrego, Yang Bian, Farid El Kasmi, Li Yang, Paulo Teixeira, Judith Kolkman, Rebecca Nelson, Michael Kolomiets, Jeffery L Dangl, Randall Wisser, Jeffrey Caplan, Xu Li, Nick Lauter, Peter Balint-Kurti
Alleles that confer multiple disease resistance (MDR) are valuable in crop improvement, although the molecular mechanisms underlying their functions remain largely unknown. A quantitative trait locus, qMdr9.02, associated with resistance to three important foliar maize diseases-southern leaf blight, gray leaf spot and northern leaf blight-has been identified on maize chromosome 9. Through fine-mapping, association analysis, expression analysis, insertional mutagenesis and transgenic validation, we demonstrate that ZmCCoAOMT2, which encodes a caffeoyl-CoA O-methyltransferase associated with the phenylpropanoid pathway and lignin production, is the gene within qMdr9...
September 2017: Nature Genetics
https://www.readbyqxmd.com/read/28717219/versatile-functional-roles-of-horizontal-cells-in-the-retinal-circuit
#11
Taro Chaya, Akihiro Matsumoto, Yuko Sugita, Satoshi Watanabe, Ryusuke Kuwahara, Masao Tachibana, Takahisa Furukawa
In the retinal circuit, environmental light signals are converted into electrical signals that can be decoded properly by the brain. At the first synapse of the visual system, information flow from photoreceptors to bipolar cells is modulated by horizontal cells (HCs), however, their functional contribution to retinal output and individual visual function is not fully understood. In the current study, we investigated functional roles for HCs in retinal ganglion cell (RGC) response properties and optokinetic responses by establishing a HC-depleted mouse line...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28714557/concise-review-developing-best-practice-models-for-the-therapeutic-use-of-extracellular-vesicles
#12
REVIEW
Agnes T Reiner, Kenneth W Witwer, Bas W M van Balkom, Joel de Beer, Chaya Brodie, Randolph L Corteling, Susanne Gabrielsson, Mario Gimona, Ahmed G Ibrahim, Dominique de Kleijn, Charles P Lai, Jan Lötvall, Hernando A Del Portillo, Ilona G Reischl, Milad Riazifar, Carlos Salomon, Hidetoshi Tahara, Wei Seong Toh, Marca H M Wauben, Vicky K Yang, Yijun Yang, Ronne Wee Yeh Yeo, Hang Yin, Bernd Giebel, Eva Rohde, Sai Kiang Lim
Growing interest in extracellular vesicles (EVs, including exosomes and microvesicles) as therapeutic entities, particularly in stem cell-related approaches, has underlined the need for standardization and coordination of development efforts. Members of the International Society for Extracellular Vesicles and the Society for Clinical Research and Translation of Extracellular Vesicles Singapore convened a Workshop on this topic to discuss the opportunities and challenges associated with development of EV-based therapeutics at the preclinical and clinical levels...
August 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28683301/-deep-extrinsic-muscle-involvement-is-a-fallacy-in-the-american-joint-committee-on-cancer-s-seventh-edition-of-tumor-staging-of-oral-cavity-cancers
#13
Samskruthi P Murthy, Krishnakumar Thankappan, Sandya Chirukandath Jayasankaran, Karippaliyil Milind, Chaya Prasad, Deepak Balasubramanian, Subramania Iyer
PURPOSE: The seventh edition of tumor staging by the American Joint Committee on Cancer (AJCC) includes extrinsic muscle involvement to define stage T4a tongue carcinomas. The anatomic location of extrinsic muscles predisposes them to early involvement even in superficial tumors. The purpose of this study was to expose a fallacy in this staging system for extrinsic muscle involvement. MATERIALS AND METHODS: This was a prospective cohort study of 87 patients with oral tongue squamous cell carcinoma...
June 10, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28679745/maternal-antiviral-immunoglobulin-accumulates-in-neural-tissue-of-neonates-to-prevent-hsv-neurological-disease
#14
Yike Jiang, Chaya D Patel, Richard Manivanh, Brian North, Iara M Backes, David A Posner, Francesca Gilli, Andrew R Pachner, Lananh N Nguyen, David A Leib
While antibody responses to neurovirulent pathogens are critical for clearance, the extent to which antibodies access the nervous system to ameliorate infection is poorly understood. In this study on herpes simplex virus 1 (HSV-1), we demonstrate that HSV-specific antibodies are present during HSV-1 latency in the nervous systems of both mice and humans. We show that antibody-secreting cells entered the trigeminal ganglion (TG), a key site of HSV infection, and persisted long after the establishment of latent infection...
July 5, 2017: MBio
https://www.readbyqxmd.com/read/28679573/the-effect-of-flipped-teaching-combined-with-modified-team-based-learning-on-student-performance-in-physiology
#15
Chaya Gopalan, Megan C Klann
Flipped classroom is a hybrid educational format that shifts guided teaching out of class, thus allowing class time for student-centered learning. Although this innovative teaching format is gaining attention, there is limited evidence on the effectiveness of flipped teaching on student performance. We compared student performance and student attitudes toward flipped teaching with that of traditional lectures using a partial flipped study design. Flipped teaching expected students to have completed preclass material, such as assigned reading, instructor-prepared lecture video(s), and PowerPoint slides...
September 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28673681/the-association-between-self-perceived-proficiency-of-personal-protective-equipment-and-objective-performance-an-observational-study-during-a-bioterrorism-simulation-drill
#16
Itay Fogel, Osant David, Chaya H Balik, Arik Eisenkraft, Lion Poles, Omri Shental, Michael Kassirer, Tal Brosh-Nissimov
BACKGROUND: The recent Ebola virus disease outbreak emphasized the potential misuse of personal protective equipment (PPE) by health care workers (HCWs) during such an event. We aimed to compare self-perceived proficiency of PPE use and objective performance, and identify predictors of low compliance and PPE misuse. METHODS: An observational study combined with subjective questionnaires were carried out during a bioterror simulation drill. Forty-two observers evaluated performance under PPE...
June 30, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28632729/radiation-associated-breast-cancer-and-gonadal-hormone-exposure-a-report-from-the-childhood-cancer-survivor-study
#17
Chaya S Moskowitz, Joanne F Chou, Charles A Sklar, Dana Barnea, Cécile M Ronckers, Danielle Novetsky Friedman, Joseph P Neglia, Lucie Turcotte, Rebecca M Howell, Tara O Henderson, Gregory T Armstrong, Wendy M Leisenring, Leslie L Robison, Flora E van Leeuwen, Malcolm C Pike, Kevin C Oeffinger
BACKGROUND: The relationship between hormone exposure and breast cancer risk in women treated with chest radiotherapy for childhood cancer is uncertain. METHODS: Participants included 1108 females from the Childhood Cancer Survivor Study who were diagnosed with childhood cancer 1970-1986, treated with chest radiotherapy, and survived to ages ⩾20 years. Hazard ratios (HRs) and 95% confidence intervals (CIs) from Cox models adjusted for chest radiation field, delivered dose, anthracycline exposure, and age at childhood cancer estimated risk...
July 11, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28631554/the-effects-of-platelet-activating-factor-on-uterine-contractility-perfusion-hypoxia-and-pain-in-mice
#18
Kevin M Hellman, Peter Y Yu, Folabomi A Oladosu, Chaya Segel, Alice Han, Pottumarthi V Prasad, Tamas Jilling, Frank F Tu
It is widely hypothesized that menstrual pain is triggered by prostaglandin synthesis that evokes high-pressure uterine contractions and ischemia. However, the effects of molecules implicated in menstrual pain on uterine contractility, perfusion, and oxygenation in vivo have been rarely demonstrated. Studies in women that do not respond to nonsteroidal anti-inflammatory drugs (NSAIDs) have reported elevated levels of platelet-activating factor (PAF). To establish in vivo evidence of PAF's capability to impair uterine homeostasis and to elicit visceral pain, we examined the effects of the PAF receptor agonist (carbamyl PAF [CPAF]) in comparison to other molecules hypothesized to play a role in uterine pain in mice...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28627252/phytochemical-and-antioxidant-properties-of-some-cassia-species
#19
Firdose R Kolar, Chaya L Gogi, Mairunisabegum M Khudavand, Meera S Choudhari, Sindhu B Patil
In this study, the antioxidant activity of aqueous and ethanol extracts of four plants from the genus Cassia were evaluated by various antioxidant assays, including ferric reducing antioxidant power (FRAP), DPPH free radical scavenging, metal chelating activity, phosphomolybdenum reducing power, hydrogen peroxide radical scavenging, hydroxyl radical scavenging, deoxyribose degradation and β-carotene bleaching assay. The various antioxidant activities were compared to standard antioxidant such as ascorbic acid...
June 18, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28621417/cell-fate-decisions-during-neural-crest-ontogeny
#20
Chaya Kalcheim, Deepak Kumar
The neural crest (NC) originates in the central nervous system (CNS) primordium. Born as an epithelium, NC progenitors undergo an epithelial-to-mesenchymal transition that generates cellular movement away from the CNS. Mesenchymal NC progenitors then migrate through stereotypic pathways characteristic of various axial levels until homing to distinct primordia where phenotypic differentiation takes place. Being the source of most of the peripheral nervous system, pigment cells and ectomesenchyme, the embryonic NC is considered to be a multipotent population of precursors...
2017: International Journal of Developmental Biology
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