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https://www.readbyqxmd.com/read/29044468/matchmaker-exchange
#1
Nara L M Sobreira, Harindra Arachchi, Orion J Buske, Jessica X Chong, Ben Hutton, Julia Foreman, François Schiettecatte, Tudor Groza, Julius O B Jacobsen, Melissa A Haendel, Kym M Boycott, Ada Hamosh, Heidi L Rehm
In well over half of the individuals with rare disease who undergo clinical or research next-generation sequencing, the responsible gene cannot be determined. Some reasons for this relatively low yield include unappreciated phenotypic heterogeneity; locus heterogeneity; somatic and germline mosaicism; variants of uncertain functional significance; technically inaccessible areas of the genome; incorrect mode of inheritance investigated; and inadequate communication between clinicians and basic scientists with knowledge of particular genes, proteins, or biological systems...
October 18, 2017: Current Protocols in Human Genetics
https://www.readbyqxmd.com/read/29029314/small-aneurysms-account-for-the-majority-and-increasing-percentage-of-aneurysmal-subarachnoid-hemorrhage-a-25-year-single-institution-study
#2
Matthew T Bender, Haley Wendt, Thomas Monarch, Narlin Beaty, Li-Mei Lin, Judy Huang, Alexander Coon, Rafael J Tamargo, Geoffrey P Colby
BACKGROUND: Prospective studies of unruptured aneurysms have shown very low rates of rupture for small aneurysms (<10 mm) and suggested that the risk of treatment outweighs benefit. However, common clinical practice shows that patients with aneurysmal subarachnoid hemorrhage (aSAH) frequently have small aneurysms. OBJECTIVE: To investigate trends in size and location of ruptured aneurysms over a 25-yr period. METHODS: A prospective, Institutional Review Board-approved database of all patients presenting to our institution with aSAH from 1991 to 2016 was analyzed...
October 6, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28989778/monarch-butterfly-population-decline-in-north-america-identifying-the-threatening-processes
#3
Wayne E Thogmartin, Ruscena Wiederholt, Karen Oberhauser, Ryan G Drum, Jay E Diffendorfer, Sonia Altizer, Orley R Taylor, John Pleasants, Darius Semmens, Brice Semmens, Richard Erickson, Kaitlin Libby, Laura Lopez-Hoffman
The monarch butterfly (Danaus plexippus) population in North America has sharply declined over the last two decades. Despite rising concern over the monarch butterfly's status, no comprehensive study of the factors driving this decline has been conducted. Using partial least-squares regressions and time-series analysis, we investigated climatic and habitat-related factors influencing monarch population size from 1993 to 2014. Potential threats included climatic factors, habitat loss (milkweed and overwinter forest), disease and agricultural insecticide use (neonicotinoids)...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28977776/anthropogenic-impacts-on-mortality-and-population-viability-of-the-monarch-butterfly
#4
Stephen B Malcolm
Monarch butterflies (Danaus plexippus) are familiar herbivores of milkweeds of the genus Asclepias, and most monarchs migrate each year to locate these host plants across North American ecosystems now dominated by agriculture. Eastern migrants overwinter in high-elevation forests in Mexico, and western monarchs overwinter in trees on the coast of California. Both populations face three primary threats to their viability: (a) loss of milkweed resources for larvae due to genetically modified crops, pesticides, and fertilizers; (b) loss of nectar resources from flowering plants; and (c) degraded overwintering forest habitats due to commercially motivated deforestation and other economic activities...
October 4, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28968163/monarch-3-abemaciclib-as-initial-therapy-for-advanced-breast-cancer
#5
Matthew P Goetz, Masakazu Toi, Mario Campone, Joohyuk Sohn, Shani Paluch-Shimon, Jens Huober, In Hae Park, Olivier Trédan, Shin-Cheh Chen, Luis Manso, Orit C Freedman, Georgina Garnica Jaliffe, Tammy Forrester, Martin Frenzel, Susana Barriga, Ian C Smith, Nawel Bourayou, Angelo Di Leo
Purpose Abemaciclib, a cyclin-dependent kinase 4 and 6 inhibitor, demonstrated efficacy as monotherapy and in combination with fulvestrant in women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer previously treated with endocrine therapy. Methods MONARCH 3 is a double-blind, randomized phase III study of abemaciclib or placebo plus a nonsteroidal aromatase inhibitor in 493 postmenopausal women with HR-positive, HER2-negative advanced breast cancer who had no prior systemic therapy in the advanced setting...
October 2, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28961914/milkweed-matters-monarch-butterfly-lepidoptera-nymphalidae-survival-and-development-on-nine-midwestern-milkweed-species
#6
V M Pocius, D M Debinski, J M Pleasants, K G Bidne, R L Hellmich, L P Brower
The population of monarch butterflies east of the Rocky Mountains has experienced a significant decline over the past 20 yr. In order to increase monarch numbers in the breeding range, habitat restoration that includes planting milkweed plants is essential. Milkweeds in the genus Asclepias and Cynanchum are the only host plants for larval monarch butterflies in North America, but larval performance and survival across nine milkweeds native to the Midwest is not well documented. We examined development and survival of monarchs from first-instar larval stages to adulthood on nine milkweed species native to Iowa...
September 7, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28961403/the-z-chromosome-is-enriched-for-sperm-proteins-in-two-divergent-species-of-lepidoptera
#7
Andrew J Mongue, James Walters
Genes that promote sexual conflict, such as those with a sex-limited fitness benefit, are expected to accumulate differentially on sex chromosomes relative to autosomes. Few tests of this hypothesis exist for male homogametic (ZZ) taxa, however, and most use RNA expression data to identify such genes. Here, we employ a different identification method by using proteomic analysis of sperm cells to identify genes with a sex-limited benefit. We tested for a bias in genomic location of sperm protein genes in two species of Lepidoptera...
September 29, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28928641/comparison-of-navigation-related-brain-regions-in-migratory-versus-non-migratory-noctuid-moths
#8
Liv de Vries, Keram Pfeiffer, Björn Trebels, Andrea K Adden, Ken Green, Eric Warrant, Stanley Heinze
Brain structure and function are tightly correlated across all animals. While these relations are ultimately manifestations of differently wired neurons, many changes in neural circuit architecture lead to larger-scale alterations visible already at the level of brain regions. Locating such differences has served as a beacon for identifying brain areas that are strongly associated with the ecological needs of a species-thus guiding the way towards more detailed investigations of how brains underlie species-specific behaviors...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28923954/macroevolutionary-shifts-of-wnta-function-potentiate-butterfly-wing-pattern-diversity
#9
Anyi Mazo-Vargas, Carolina Concha, Luca Livraghi, Darli Massardo, Richard W R Wallbank, Linlin Zhang, Joseph D Papador, Daniel Martinez-Najera, Chris D Jiggins, Marcus R Kronforst, Casper J Breuker, Robert D Reed, Nipam H Patel, W Owen McMillan, Arnaud Martin
Butterfly wing patterns provide a rich comparative framework to study how morphological complexity develops and evolves. Here we used CRISPR/Cas9 somatic mutagenesis to test a patterning role for WntA, a signaling ligand gene previously identified as a hotspot of shape-tuning alleles involved in wing mimicry. We show that WntA loss-of-function causes multiple modifications of pattern elements in seven nymphalid butterfly species. In three butterflies with a conserved wing-pattern arrangement, WntA is necessary for the induction of stripe-like patterns known as symmetry systems and acquired a novel eyespot activator role specific to Vanessa forewings...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28886032/emergence-phenology-uncertainty-and-the-evolution-of-migratory-behavior-in-anax-junius-odonata-aeshnidae
#10
Michael L May, John A Gregoire, Suzanne M Gregoire, Maria Aliberti Lubertazzi, John H Matthews
Mass migrations by Odonata, although less studied than those of Monarch butterflies and plague locusts, have provoked comment and study for many years. Relatively recently, increasing interest in dragonflies, supported by new technologies, has resulted in more detailed knowledge of the species involved, behavioral mechanisms, and geographic extent. In this paper we examine, in four independent but complementary studies, how larval habitat and emergence phenology interact with climate to shape the evolution of migratory strategy in Anax junius, a common species throughout much of the eastern United States and southern Canada...
2017: PloS One
https://www.readbyqxmd.com/read/28839116/neo-sex-chromosomes-in-the-monarch-butterfly-danaus-plexippus
#11
Andrew J Mongue, Petr Nguyen, Anna Voleníková, James R Walters
We report the discovery of a neo-sex chromosome in the monarch butterfly, Danaus plexippus, and several of its close relatives. Z-linked scaffolds in the D. plexippus genome assembly were identified via sex-specific differences in Illumina sequencing coverage. Additionally, a majority of the D. plexippus genome assembly was assigned to chromosomes based on counts of one-to-one orthologs relative to the butterfly Melitaea cinxia (with replication using two other lepidopteran species), in which genome scaffolds have been mapped to linkage groups...
October 5, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28831003/vertebrate-like-cryptochrome-2-from-monarch-regulates-circadian-transcription-via-independent-repression-of-clock-and-bmal1-activity
#12
Ying Zhang, Matthew J Markert, Shayna C Groves, Paul E Hardin, Christine Merlin
Circadian repression of CLOCK-BMAL1 by PERIOD and CRYPTOCHROME (CRY) in mammals lies at the core of the circadian timekeeping mechanism. CRY repression of CLOCK-BMAL1 and regulation of circadian period are proposed to rely primarily on competition for binding with coactivators on an α-helix located within the transactivation domain (TAD) of the BMAL1 C terminus. This model has, however, not been tested in vivo. Here, we applied CRISPR/Cas9-mediated mutagenesis in the monarch butterfly (Danaus plexippus), which possesses a vertebrate-like CRY (dpCRY2) and an ortholog of BMAL1, to show that insect CRY2 regulates circadian repression through TAD α-helix-dependent and -independent mechanisms...
September 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28822201/-pharmacokinetic-research-strategies-of-compatibilities-and-synergistic-effects-of-classical-danshen-herb-pairs-based-on-pharmacokinetics-of-danshen-bingpian-and-danshen-honghua
#13
Cui-Ying Zhang, Wei-Guang Ren
Herb pairs are usual clinical compatibility forms and one of compound prescription sources in Chinese medicine. Pharmacokinetic research in vivo is one of the important items in elucidating the mechanism for synergistic and attenuated mechanisms of herb pairs. The paper comprehensively summarized and systemized the pharmacokinetic researches of marker-ingredients about Danshen-Honghua and Danshen-Bingpian in order to elucidate the rationality and scientificity of herb pairs and provide some feasible suggestions on the pharmacokinetics of drugs in the future...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28747640/structural-and-physical-determinants-of-the-proboscis-sucking-pump-complex-in-the-evolution-of-fluid-feeding-insects
#14
Konstantin G Kornev, Arthur A Salamatin, Peter H Adler, Charles E Beard
Fluid-feeding insects have evolved a unique strategy to distribute the labor between a liquid-acquisition device (proboscis) and a sucking pump. We theoretically examined physical constraints associated with coupling of the proboscis and sucking pump into a united functional organ. Classification of fluid feeders with respect to the mechanism of energy dissipation is given by using only two dimensionless parameters that depend on the length and diameter of the proboscis food canal, maximum expansion of the sucking pump chamber, and chamber size...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28736346/shifting-treatment-paradigms-for-ruptured-aneurysms-from-open-surgery-to-endovascular-therapy-over-25-years
#15
Matthew T Bender, Haley Wendt, Thomas Monarch, Li-Mei Lin, Bowen Jiang, Judy Huang, Alexander L Coon, Rafael J Tamargo, Geoffrey P Colby
BACKGROUND: Since the introduction of Gugliemi detachable coils in the early 1990s, major clinical studies have supported an increasing role for coil embolization of ruptured aneurysms. We assessed aneurysm location and treatment modality in aneurysmal subarachnoid hemorrhage (aSAH) over the past 25 years. METHODS: A prospective, institutional review board-approved aneurysm database was screened for patients presenting with aSAH from 1991 to 2016. Microsurgical and endovascular capabilities were present throughout...
October 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28708851/interpreting-surveys-to-estimate-the-size-of-the-monarch-butterfly-population-pitfalls-and-prospects
#16
John M Pleasants, Myron P Zalucki, Karen S Oberhauser, Lincoln P Brower, Orley R Taylor, Wayne E Thogmartin
To assess the change in the size of the eastern North American monarch butterfly summer population, studies have used long-term data sets of counts of adult butterflies or eggs per milkweed stem. Despite the observed decline in the monarch population as measured at overwintering sites in Mexico, these studies found no decline in summer counts in the Midwest, the core of the summer breeding range, leading to a suggestion that the cause of the monarch population decline is not the loss of Midwest agricultural milkweeds but increased mortality during the fall migration...
2017: PloS One
https://www.readbyqxmd.com/read/28672808/ecosystem-based-incorporation-of-nectar-producing-plants-for-stink-bug-parasitoids
#17
REVIEW
Glynn Tillman
Adult parasitoids of pest insects rely on floral resources for survival and reproduction, but can be food-deprived in intensively managed agricultural systems lacking these resources. Stink bugs are serious pests for crops in southwest Georgia. Provisioning nectar-producing plants for parasitoids of stink bugs potentially can enhance biocontrol of these pests. Knowledge of spatial and temporal availability and distribution of stink bugs in host plants is necessary for appropriate timing and placement of flowering plants in agroecosystems...
June 24, 2017: Insects
https://www.readbyqxmd.com/read/28657360/a-current-and-comprehensive-review-of-cyclin-dependent-kinase-inhibitors-for-the-treatment-of-metastatic-breast-cancer
#18
Burak Bilgin, Mehmet A N Sendur, Didem Şener Dede, Muhammed Bülent Akıncı, Bülent Yalçın
BACKGROUND: Resistance to endocrine treatment generally occurs over time, especially in the metastatic stage. In this paper, we aimed to review the mechanisms of cyclin-dependent kinase (CDK) 4/6 inhibition and clinical usage of new agents in the light of recent literature updates. SCOPE: A literature search was carried out using PubMed, Medline and ASCO and ESMO annual-meeting abstracts by using the following search keywords; "palbociclib", "abemaciclib", "ribociclib", "cyclin-dependent kinase inhibitors" and "CDK 4/6" in metastatic breast cancer (MBC)...
July 25, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28580882/monarch-2-abemaciclib-in-combination-with-fulvestrant-in-women-with-hr-her2-advanced-breast-cancer-who-had-progressed-while-receiving-endocrine-therapy
#19
RANDOMIZED CONTROLLED TRIAL
George W Sledge, Masakazu Toi, Patrick Neven, Joohyuk Sohn, Kenichi Inoue, Xavier Pivot, Olga Burdaeva, Meena Okera, Norikazu Masuda, Peter A Kaufman, Han Koh, Eva-Maria Grischke, Martin Frenzel, Yong Lin, Susana Barriga, Ian C Smith, Nawel Bourayou, Antonio Llombart-Cussac
Purpose MONARCH 2 ( ClinicalTrials.gov identifier: NCT02107703) compared the efficacy and safety of abemaciclib, a selective cyclin-dependent kinase 4 and 6 inhibitor, plus fulvestrant with fulvestrant alone in patients with advanced breast cancer (ABC). Patients and Methods MONARCH 2 was a global, double-blind, phase III study of women with hormone receptor-positive and human epidermal growth factor receptor 2-negative ABC who had progressed while receiving neoadjuvant or adjuvant endocrine therapy (ET), ≤ 12 months from the end of adjuvant ET, or while receiving first-line ET for metastatic disease...
September 1, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28533223/monarch-1-a-phase-ii-study-of-abemaciclib-a-cdk4-and-cdk6-inhibitor-as-a-single-agent-in-patients-with-refractory-hr-her2-metastatic-breast-cancer
#20
Maura N Dickler, Sara M Tolaney, Hope S Rugo, Javier Cortés, Véronique Diéras, Debra Patt, Hans Wildiers, Clifford A Hudis, Joyce O'Shaughnessy, Esther Zamora, Denise A Yardley, Martin Frenzel, Andrew Koustenis, José Baselga
Purpose: The phase II MONARCH 1 study was designed to evaluate the single-agent activity and adverse event (AE) profile of abemaciclib, a selective inhibitor of CDK4 and CDK6, in women with refractory hormone receptor-positive (HR(+)), HER2(-) metastatic breast cancer (MBC).Experimental Design: MONARCH 1 was a phase II single-arm open-label study. Women with HR(+)/HER2(-) MBC who had progressed on or after prior endocrine therapy and had 1 or 2 chemotherapy regimens in the metastatic setting were eligible. Abemaciclib 200 mg was administered orally on a continuous schedule every 12 hours until disease progression or unacceptable toxicity...
September 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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