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https://www.readbyqxmd.com/read/29140758/personal-accounts-of-poverty-a-thematic-analysis-of-social-media
#1
Mary A Caplan, Gregory Purser, Peter A Kindle
The field of social work seeks to enhance human well-being by addressing the needs of people living in poverty. Three billion people around the world use the internet daily, and 65% of them use social media. This article qualitatively identifies emergent themes about the lived experiences of poverty from people who reported either being poor or having have been poor, using selected social media posts (N = 1,495) on the website Reddit. We found that the experiences of poverty bring arduousness and hardship, which necessitates an arsenal of survival strategies and skills...
November 15, 2017: Journal of Evidence-informed Social Work
https://www.readbyqxmd.com/read/29114853/the-evolution-of-the-manus-of-early-theropod-dinosaurs-is-characterized-by-high-inter-and-intraspecific-variation
#2
Daniel E Barta, Sterling J Nesbitt, Mark A Norell
The origin of the avian hand, with its reduced and fused carpals and digits, from the five-fingered hands and complex wrists of early dinosaurs represents one of the major transformations of manus morphology among tetrapods. Much attention has been directed to the later part of this transition, from four- to three-fingered taxa. However, earlier anatomical changes may have influenced these later modifications, possibly paving the way for a later frameshift in digit identities. We investigate the five- to four-fingered transition among early dinosaurs, along with changes in carpus morphology...
November 8, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29078687/endobronchial-thermoplasty-for-asthma
#3
REVIEW
Felix Zamora, Roy Cho, Madhuri Rao, Heidi Gibson, H Erhan Dincer
Asthma is an incurable chronic disease affecting approximately 24 million people in the United States. The hallmark features of asthma are reversible airflow obstruction, airway hyperresponsiveness, airway inflammation, bronchoconstriction, and excessive mucus secretion. Clinical symptoms include episodic or persistent breathlessness, wheezing, cough, or chest tightness/pressure. Forty-five percent of asthmatics continue to have yearly exacerbations and the disease is responsible for approximately 3,600 annual deaths...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29045586/vestigial-aortic-inter-leaflet-triangle-resulting-in-severe-aortic-regurgitation
#4
Kikuko Obase, Roberto M Lang, Yumiko Kimura, Takashi Miura, Kiyoyuki Eishi
No abstract text is available yet for this article.
October 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28990569/-history-of-the-thymus-from-an-accident-of-evolution-to-the-programming-of-immunological-self-tolerance
#5
Vincent Geenen
This synthesis presents the most important disruptions of conceptions about the thymus since its discovery in Antique Greece. For centuries, the thymus was considered as a vestigial organ, and its role in T-lymphocyte differentiation has been proposed only in the 1960's. Most recent studies attribute to the thymus an essential and unique role in the programming of central immunological self-tolerance. The basal mechanism implicated in this function is the transcription in thymic epithelium of genes encoding precursors of self-antigens...
June 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28973883/heterochronic-truncation-of-odontogenesis-in-theropod-dinosaurs-provides-insight-into-the-macroevolution-of-avian-beaks
#6
Shuo Wang, Josef Stiegler, Ping Wu, Cheng-Ming Chuong, Dongyu Hu, Amy Balanoff, Yachun Zhou, Xing Xu
Beaks are innovative structures characterizing numerous tetrapod lineages, including birds, but little is known about how developmental processes influenced the macroevolution of these important structures. Here we provide evidence of ontogenetic vestigialization of alveoli in two lineages of theropod dinosaurs and show that these are transitional phenotypes in the evolution of beaks. One of the smallest known caenagnathid oviraptorosaurs and a small specimen of the Early Cretaceous bird Sapeornis both possess shallow, empty vestiges of dentary alveoli...
October 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28931837/endocast-of-the-late-triassic-carnian-dinosaur-saturnalia-tupiniquim-implications-for-the-evolution-of-brain-tissue-in-sauropodomorpha
#7
Mario Bronzati, Oliver W M Rauhut, Jonathas S Bittencourt, Max C Langer
The evolutionary history of dinosaurs might date back to the first stages of the Triassic (c. 250-240 Ma), but the oldest unequivocal records of the group come from Late Triassic (Carnian - c. 230 Ma) rocks of South America. Here, we present the first braincase endocast of a Carnian dinosaur, the sauropodomorph Saturnalia tupiniquim, and provide new data regarding the evolution of the floccular and parafloccular lobe of the cerebellum (FFL), which has been extensively discussed in the field of palaeoneurology...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928009/oropharyngeal-epignathus-with-partial-facial-duplication-report-of-a-rare-case
#8
M Herath, B S M S Siriwardena, R D Jayasinghe, D K Dias
Foetal oral teratoma or epignathus is a rare benign condition that originates in the oropharyngeal region. The term 'teratoma' refers to a mass composed of poorly organized tissues derived from each of the three germ layers. Epignathus may occur when one twin ceases development during gestation and becomes vestigial to the fully formed dominant twin. The reported incidence of epignathus is approximately 1:35,000 to 1:200,000 live births. A unique case of partial facial duplication with gross histological and radiological evidence of partial duplication of the facial elements and organs is presented herein...
September 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28919247/the-effect-of-directed-photic-stimulation-of-the-pineal-on-experimental-parkinson-s-disease
#9
Gregory L Willis, Christopher B Freelance
The role of the circadian system in Parkinson's disease (PD) is a topic of increasing scientific interest. This has emerged from recent studies demonstrating an altered response of PD patients to treatment in relation to the phase of the light/dark cycle and from other work defining the functional significance of melanocytes in PD: a cell type that the nigro-striatal dopamine (NSD) system and circadian system both contain. The present study was undertaken to determine the sensitivity of the pineal, as the final common pathway of the circadian system, to light delivered directly to the pineal via surgical implantation of LEDs...
December 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28893003/spectrum-of-mri-appearance-of-mayer-rokitansky-kuster-hauser-mrkh-syndrome-in-primary-amenorrhea-patients
#10
Deb Kumar Boruah, Shantiranjan Sanyal, Bidyut Bikash Gogoi, Kangkana Mahanta, Arjun Prakash, Antony Augustine, Sashidhar Achar, Hiranya Baishya
INTRODUCTION: Mayer-Rokitansky-Kuster-Hauser (MRKH) synd-rome is a malformation in female genital tract due to interrupted embryonic development of para-mesonephric ducts leading to uterine and proximal vagina aplasia or hypoplasia. AIM: To analyse the MRI findings in females suspected of MRKH syndrome in a primary amenorrhea workup. MATERIALS AND METHODS: A cross-sectional study comprising of 11 patients of MRKH syndrome presented in a tertiary care centre from March 2016 to February 2017 evaluated in 1...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28883413/the-ca-2-influx-through-the-mammalian-skeletal-muscle-dihydropyridine-receptor-is-irrelevant-for-muscle-performance
#11
Anamika Dayal, Kai Schrötter, Yuan Pan, Karl Föhr, Werner Melzer, Manfred Grabner
Skeletal muscle excitation-contraction (EC) coupling is initiated by sarcolemmal depolarization, which is translated into a conformational change of the dihydropyridine receptor (DHPR), which in turn activates sarcoplasmic reticulum (SR) Ca(2+) release to trigger muscle contraction. During EC coupling, the mammalian DHPR embraces functional duality, as voltage sensor and L-type Ca(2+) channel. Although its unique role as voltage sensor for conformational EC coupling is firmly established, the conventional function as Ca(2+) channel is still enigmatic...
September 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28870996/vestigial-like-3-is-a-novel-ets1-interacting-partner-and-regulates-trigeminal-nerve-formation-and-cranial-neural-crest-migration
#12
Emilie Simon, Nadine Thézé, Sandrine Fédou, Pierre Thiébaud, Corinne Faucheux
Drosophila Vestigial is the founding member of a protein family containing a highly conserved domain, called Tondu, which mediates their interaction with members of the TEAD family of transcription factors (Scalloped in Drosophila). In Drosophila, the Vestigial/Scalloped complex controls wing development by regulating the expression of target genes through binding to MCAT sequences. In vertebrates, there are four Vestigial-like genes, the functions of which are still not well understood. Here, we describe the regulation and function of vestigial-like 3 (vgll3) during Xenopus early development...
October 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28828570/the-cryptomonad-nucleomorph
#13
Geoffrey I McFadden
The cryptomonad nucleomorph is a vestigial nucleus of a eukaryotic red alga engulfed by a phagotrophic protist and retained as a photosynthetic endosymbiont. This review recounts the initial discovery and subsequent characterisation of the cryptomonad nucleomorph focusing on the key role of Peter Sitte and his protégés in our understanding of secondary endosymbiosis to create complex plastids, one of the major transition events in the evolution of life on Earth.
August 21, 2017: Protoplasma
https://www.readbyqxmd.com/read/28816480/superior-olfactory-language-and-cognition-in-odor-color-synaesthesia
#14
Laura J Speed, Asifa Majid
Olfaction is often considered a vestigial sense in humans, demoted throughout evolution to make way for the dominant sense of vision. This perspective on olfaction is reflected in how we think and talk about smells in the West, with odor imagery and odor language reported to be difficult. In the present study we demonstrate odor cognition is superior in odor-color synaesthesia, where there are additional sensory connections to odor concepts. Synaesthesia is a neurological phenomenon in which input in 1 modality leads to involuntary perceptual associations...
August 17, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28812602/prenatal-development-supports-a-single-origin-of-laryngeal-echolocation-in-bats
#15
Zhe Wang, Tengteng Zhu, Huiling Xue, Na Fang, Junpeng Zhang, Libiao Zhang, Jian Pang, Emma C Teeling, Shuyi Zhang
Bat laryngeal echolocation is considered as one of the most complex and diverse modes of auditory sensory perception in animals and its evolutionary history has been the cause of many scientific controversies in the past two decades. To date, the majority of scientific evidence supports that bats (Chiroptera) are divided into two subordinal groups: Yinpterochiroptera, containing the laryngeal echolocating superfamily Rhinolophidae as sister taxa to the non-laryngeal echolocating family Pteropodidae; and Yangochiroptera, containing all other laryngeal echolocating lineages...
January 9, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28769032/vestigial-like-2-contributes-to-normal-muscle-fiber-type-distribution-in-mice
#16
Masahiko Honda, Kyoko Hidaka, So-Ichiro Fukada, Ryo Sugawa, Manabu Shirai, Masahito Ikawa, Takayuki Morisaki
Skeletal muscle is composed of heterogeneous populations of myofibers that are classified as slow- and fast-twitch fibers. The muscle fiber-type is regulated in a coordinated fashion by multiple genes, including transcriptional factors and microRNAs (miRNAs). However, players involved in this regulation are not fully elucidated. One of the members of the Vestigial-like factors, Vgll2, is thought to play a pivotal role in TEA domain (TEAD) transcription factor-mediated muscle-specific gene expression because of its restricted expression in skeletal muscles of adult mice...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28762509/vertebral-column-regionalisation-in-chinook-salmon-oncorhynchus-tshawytscha
#17
A De Clercq, M R Perrott, P S Davie, M A Preece, B Wybourne, N Ruff, A Huysseune, P E Witten
Teleost vertebral centra are often similar in size and shape, but vertebral-associated elements, i.e. neural arches, haemal arches and ribs, show regional differences. Here we examine how the presence, absence and specific anatomical and histological characters of vertebral centra-associated elements can be used to define vertebral column regions in juvenile Chinook salmon (Oncorhynchus tshawytscha). To investigate if the presence of regions within the vertebral column is independent of temperature, animals raised at 8 and 12 °C were studied at 1400 and 1530 degreedays, in the freshwater phase of the life cycle...
July 31, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28762500/myology-of-the-forelimb-of-majungasaurus-crenatissimus-theropoda-abelisauridae-and-the-morphological-consequences-of-extreme-limb-reduction
#18
Sara H Burch
Forelimb reduction occurred independently in multiple lineages of theropod dinosaurs. Although tyrannosaurs are renowned for their tiny, two-fingered forelimbs, the degree of their reduction in length is surpassed by abelisaurids, which possess an unusual morphology distinct from that of other theropods. The forelimbs of abelisaurids are short but robust and exhibit numerous crests, tubercles, and scars that allow for inferences of muscle attachment sites. Phylogenetically based reconstructions of the musculature were used in combination with close examination of the osteology in the Malagasy abelisaurid Majungasaurus to create detailed muscle maps of the forelimbs, and patterns of the muscular and bony morphology were compared with those of extant tetrapods with reduced or vestigial limbs...
August 1, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28744739/perforated-meckel-s-diverticulitis
#19
Robert W Colvin, Sayf Al-Katib, John Ebersole
A Meckel's diverticulum is a vestigial remnant present in approximately 2% of the population. Fewer than 10% of patients with a Meckel's diverticulum develop clinical complications, and such findings are exceedingly rare in the geriatric population. We present a case of perforated Meckel's diverticulitis with a fistulous tract involving the anterior abdominal wall in an 85-year-old male.
July 25, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28743862/co-option-of-the-cardiac-transcription-factor-nkx2-5-during-development-of-the-emu-wing
#20
Peter G Farlie, Nadia M Davidson, Naomi L Baker, Mai Raabus, Kelly N Roeszler, Claire Hirst, Andrew Major, Mylene M Mariette, David M Lambert, Alicia Oshlack, Craig A Smith
The ratites are a distinctive clade of flightless birds, typified by the emu and ostrich that have acquired a range of unique anatomical characteristics since diverging from basal Aves at least 100 million years ago. The emu possesses a vestigial wing with a single digit and greatly reduced forelimb musculature. However, the embryological basis of wing reduction and other anatomical changes associated with loss of flight are unclear. Here we report a previously unknown co-option of the cardiac transcription factor Nkx2...
July 25, 2017: Nature Communications
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