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https://www.readbyqxmd.com/read/28099712/comparison-of-selective-and-non-selective-internal-iliac-artery-embolization-for-abnormal-placentation-with-major-postpartum-hemorrhage
#1
Tsz-Kin Lo, Chun-Hong So, Sik-Wing Yeung, Mimi Fung, Kwai-Ying Lui, Nin-Yuan Pan
No abstract text is available yet for this article.
January 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28094027/persistent-females-and-compliant-males-coordinate-alarm-calling-in-diana-monkeys
#2
Claudia Stephan, Klaus Zuberbühler
Sexual dimorphisms in animal vocal behavior have been successfully explained by sexual selection theory (e.g., mammals [1-5]; birds [6, 7]; anurans [8, 9]), but this does not usually include alarm calls, which are thought to be the product of kin or individual selection (e.g., [10, 11]). Here, we present the results of playback experiments with wild Diana monkeys, a species with highly dimorphic predator-specific alarms, to investigate the communication strategies of males and females during predator encounters...
November 7, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/28090187/recurrent-intestinal-obstruction-in-a-patient-with-selective-iga-deficiency
#3
Chee-Kin Hui
A 32 year old woman presented with acute onset of abdominal pain and fever. An urgent computerised tomography (CT) of the whole abdomen showed dilated loop at the terminal ileum in the right lower abdomen with thickening of the wall and oedema. The CT was suggestive of distal small bowel obstruction at the ileum with surrounding wall oedema. Multiple biopsies taken from the terminal ileum and colon on colonoscopy were all unremarkable. She represented one-year later with a recurrence of intestinal obstruction...
November 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28089514/reproductive-conflict-and-the-evolution-of-menopause-in-killer-whales
#4
Darren P Croft, Rufus A Johnstone, Samuel Ellis, Stuart Nattrass, Daniel W Franks, Lauren J N Brent, Sonia Mazzi, Kenneth C Balcomb, John K B Ford, Michael A Cant
Why females of some species cease ovulation prior to the end of their natural lifespan is a long-standing evolutionary puzzle [1-4]. The fitness benefits of post-reproductive helping could in principle select for menopause [1, 2, 5], but the magnitude of these benefits appears insufficient to explain the timing of menopause [6-8]. Recent theory suggests that the cost of inter-generational reproductive conflict between younger and older females of the same social unit is a critical missing term in classical inclusive fitness calculations (the "reproductive conflict hypothesis" [6, 9])...
January 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28087713/functional-genomics-reveals-that-tumors-with-activating-phosphoinositide-3-kinase-mutations-are-dependent-on-accelerated-protein-turnover
#5
Teresa Davoli, Kristen E Mengwasser, Jingjing Duan, Ting Chen, Camilla Christensen, Eric C Wooten, Anthony N Anselmo, Mamie Z Li, Kwok-Kin Wong, Kristopher T Kahle, Stephen J Elledge
Activating mutations in the phosphoinositide 3-kinase (PI3K) signaling pathway are frequently identified in cancer. To identify pathways that support PI3K oncogenesis, we performed a genome-wide RNAi screen in isogenic cell lines harboring wild-type or mutant PIK3CA to search for PI3K synthetic-lethal (SL) genes. A combined analysis of these results with a meta-analysis of two other large-scale RNAi screening data sets in PI3K mutant cancer cell lines converged on ribosomal protein translation and proteasomal protein degradation as critical nononcogene dependencies for PI3K-driven tumors...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28079112/microbes-can-help-explain-the-evolution-of-host-altruism
#6
Ohad Lewin-Epstein, Ranit Aharonov, Lilach Hadany
The evolution of altruistic behaviour, which is costly to the donor but beneficial for the recipient, is among the most intriguing questions in evolutionary biology. Several theories have been proposed to explain it, including kin selection, group selection and reciprocity. Here we propose that microbes that manipulate their hosts to act altruistically could be favoured by selection, and may play a role in the widespread occurrence of altruism. Using computational models, we find that microbe-induced altruism can explain the evolution of host altruistic behaviour under wider conditions than host-centred theories, including in a fully mixed host population, without repeating interactions or individual recognition...
January 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28071790/synthesizing-perspectives-on-the-evolution-of-cooperation-within-and-between-species
#7
Jessica L Barker, Judith L Bronstein, Maren L Friesen, Emily I Jones, H Kern Reeve, Andrew G Zink, Megan E Frederickson
Cooperation is widespread both within and between species, but are intra-specific and inter-specific cooperation fundamentally similar or qualitatively different phenomena? This review evaluates this question, necessary for a general understanding of the evolution of cooperation. First, we outline three advantages of cooperation relative to non-cooperation (acquisition of otherwise inaccessible goods and services, more efficient acquisition of resources, and buffering against variability), and predict when individuals should cooperate with a conspecific versus a heterospecific partner to obtain these advantages...
January 10, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28059289/mode-selective-coupling-between-few-mode-fibers-and-buried-channel-waveguides
#8
Yunfei Wu, Kin Seng Chiang
With intensive computation, we analyze in detail butt-coupling between few-mode fibers and buried channel waveguides and discuss, in particular, the conditions to achieve mode-selective coupling for the first 6 spatial modes. In the case of coupling a buried rectangular-core waveguide to a step-index or a parabolic-index circular-core fiber, a modal crosstalk smaller than -20 dB for all the 6 spatial modes can be achieved, when the shape of the waveguide core is sufficiently close to a square (within ± 0.7% variation in its aspect ratio) and the waveguide and the fiber have close mode volumes...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28050819/preventing-fusion-mass-shift-avoids-postoperative-distal-curve-adding-on-in-adolescent-idiopathic-scoliosis
#9
Hideki Shigematsu, Jason Pui Yin Cheung, Mauro Bruzzone, Hiroaki Matsumori, Kin-Cheung Mak, Dino Samartzis, Keith Dip Kei Luk
BACKGROUND: Surgery for adolescent idiopathic scoliosis (AIS) is only complete after achieving fusion to maintain the correction obtained intraoperatively. The instrumented or fused segments can be referred to as the "fusion mass". In patients with AIS, the ideal fusion mass strategy has been established based on fulcrum-bending radiographs for main thoracic curves. Ideally, the fusion mass should achieve parallel endplates of the upper and lower instrumented vertebra and correct any "shift" for truncal balance...
January 3, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28028377/adult-helpers-increase-the-recruitment-of-closely-related-offspring-in-the-cooperatively-breeding-rifleman
#10
Stephanie A J Preston, James V Briskie, Ben J Hatchwell
Indirect fitness benefits gained through kin-selected helping are widely invoked to explain the evolution of cooperative breeding behavior in birds. However, the impact of helpers on productivity of helped broods can be difficult to determine if the effects are confounded by territory quality or if the benefit of helpers is apparent only in the long term. In riflemen Acanthisitta chloris, helping and group membership are effectively decoupled as adult helpers are individuals that have dispersed from their natal territory and live independently from breeders in "kin neighborhoods...
November 2016: Behavioral Ecology: Official Journal of the International Society for Behavioral Ecology
https://www.readbyqxmd.com/read/27991659/sexual-selection-modulates-genetic-conflicts-and-patterns-of-genomic-imprinting
#11
Gonçalo S Faria, Susana A M Varela, Andy Gardner
Recent years have seen a surge of interest in linking the theories of kin selection and sexual selection. In particular, there is a growing appreciation that kin selection, arising through demographic factors such as sex-biased dispersal, may modulate sexual conflicts, including in the context of male-female arms races characterized by coevolutionary cycles. However, evolutionary conflicts of interest need not only occur between individuals, but may also occur within individuals, and sex-specific demography is known to foment such intragenomic conflict in relation to social behavior...
December 19, 2016: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/27987088/elevated-kin-directed-altruism-emerges-in-childhood-and-is-linked-to-feminine-gender-expression-in-samoan-fa-afafine-a-retrospective-study
#12
Doug P VanderLaan, Lanna J Petterson, Paul L Vasey
Androphilia refers to sexual attraction toward adult males, whereas gynephilia refers to sexual attraction toward adult females. The kin selection hypothesis posits that androphilic males help kin increase their reproductive output via kin-directed altruism, thus offsetting their own lowered reproduction and contributing to the fitness of genes underpinning male androphilia. Support for this hypothesis has been garnered in several Samoan studies showing that feminine androphilic males (known locally as fa'afafine) report elevated willingness to invest in nieces and nephews in adulthood...
December 16, 2016: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/27986091/from-early-detection-to-rehabilitation-in-the-community-reading-beyond-the-blog-testimonies-of-survivors-quality-of-life-and-prostate-cancer-representation
#13
Margareth Santos Zanchetta, Marguerite Cognet, Mary Rachel Lam-Kin-Teng, Marie Elisabeth Dumitriu, Lise Renaud, Jacques Rhéaume
BACKGROUND: Survivors' testimonies can reveal much about men's experiences of prostate cancer and impacts on their quality of life (QOL) during the clinical trajectory of the disease. These survivors' shared thoughts and views were hypothesized to reflect salient features of their lived social representation of prostate cancer. CONTEXT: We explored the content of testimonies posted by men to a public blog hosted by a French national prostate cancer patients' association...
December 16, 2016: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/27984000/flavonoid-dimers-are-highly-potent-killers-of-multidrug-resistant-cancer-cells-overexpressing-mrp1
#14
Lauriane Dury, Rachad Nasr, Doriane Lorendeau, Elisabeta Comsa, Iris Wong, Xuezhen Zhu, Kin-Fai Chan, Tak-Hang Chan, Larry Chow, Pierre Falson, Attilio Di Pietro, Hélène Baubichon-Cortay
MRP1 overexpression in multidrug-resistant cancer cells has been shown to be responsible for collateral sensitivity to some flavonoids that stimulate a huge MRP1-mediated GSH efflux. This massive GSH depletion triggers the death of these cancer cells. We describe here that bivalent flavonoid dimers strikingly stimulate such MRP1-mediated GSH efflux and trigger a 50-100 fold more potent cell death than their corresponding monomers. This selective and massive cell death of MRP1-overexpressing cells (both transfected and drug-selected cell lines) is no longer observed either upon catalytic inactivation of MRP1 or its knockdown by siRNA...
January 15, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27960105/evaluation-and-comparison-of-diffusion-mr-methods-for-measuring-apparent-transcytolemmal-water-exchange-rate-constant
#15
Xin Tian, Hua Li, Xiaoyu Jiang, Jingping Xie, John C Gore, Junzhong Xu
Two diffusion-based approaches, CG (constant gradient) and FEXI (filtered exchange imaging) methods, have been previously proposed for measuring transcytolemmal water exchange rate constant kin, but their accuracy and feasibility have not been comprehensively evaluated and compared. In this work, both computer simulations and cell experiments in vitro were performed to evaluate these two methods. Simulations were done with different cell diameters (5, 10, 20μm), a broad range of kin values (0.02-30s(-1)) and different SNR's, and simulated kin's were directly compared with the ground truth values...
December 1, 2016: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/27951454/kamikazes-and-cultural-evolution
#16
Sean Allen-Hermanson
Is cultural evolution needed to explain altruistic selfsacrifice? Some contend that cultural traits (e.g. beliefs, behaviors, and for some "memes") replicate according to selection processes that have "floated free" from biology. One test case is the example of suicide kamikaze attacks in wartime Japan. Standard biological mechanisms-such as reciprocal altruism and kin selection-might not seem to apply here: The suicide pilots did not act on the expectation that others would reciprocate, and they were supposedly sacrificing themselves for country and emperor, not close relatives...
December 9, 2016: Studies in History and Philosophy of Biological and Biomedical Sciences
https://www.readbyqxmd.com/read/27942861/decreased-white-matter-fa-values-in-the-left-inferior-frontal-gyrus-is-a-possible-intermediate-phenotype-of-schizophrenia-evidences-from-a-novel-group-strategy
#17
Jianjun Ou, Hailong Lyu, Maorong Hu, Jun Li, Wenbin Guo, Xiaofeng Guo, Lihua Li, Junjie Zheng, Qinling Wei, Feng Liu, Zhong He, Juan Wang, Fang Liu, Renrong Wu, Jindong Chen, Lehua Li, Bin Hu, Huafu Chen, Jingping Zhao
Intermediate phenotype could be used to investigate genetic susceptibility. However, genetic and environmental heterogeneity may interfere with identification of intermediate phenotypes. In this study, we minimized these interferences by using a novel group strategy. A total of 22 drug-naive and first-episode schizophrenia (FES) patients, along with 22 of their kin healthy siblings (HS), 22 non-kin healthy siblings (nHS) of other schizophrenia patients and 22 healthy controls (HC), were recruited. Brain imaging was acquired from the participants...
December 9, 2016: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/27940196/single-probe-multistate-detection-of-dna-via-aggregation-induced-emission-on-a-graphene-oxide-platform
#18
Abhishek Tyagi, Kin Leung Chu, Irfan Haider Abidi, Aldrine Abenoja Cagang, Qicheng Zhang, Nelson L C Leung, Engui Zhao, Ben Zhong Tang, Zhengtang Luo
: Graphene and graphene oxides (GO), or their reduced forms, have been introduced in a variety of biosensing platforms and have exhibited enhanced performance levels in these forms. We herein report a DNA sensing platform consisting of aggregation-induced emission (AIE) molecules and complementary DNA (comDNA) adsorbed on GO. We experimentally turned the AIE molecule on and off by adjusting its distance, which correlates with DNA structures as shown in our computational results, from the GO sheet, which quenches depending on its distance from the graphene plane...
December 8, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27927973/effect-of-biological-relatedness-on-perfume-selection-for-others-preliminary-evidence
#19
Markéta Sobotková, Jitka Fialová, S Craig Roberts, Jan Havlíček
People tend to choose perfumes to complement their body odour. As kin share some body odour qualities, their ability to select complementary perfumes for relatives might be higher compared with selection for nonrelatives. We tested this in two studies, comparing selection of a perfume for a target man by himself and by either a familiar but unrelated individual (girlfriend; Study 1) or a relative (sister; Study 2). Target men applied the two perfumes (own or other's choice) to their axillae and then wore cotton pads for 12 hr...
December 7, 2016: Perception
https://www.readbyqxmd.com/read/27922085/diversity-of-major-urinary-proteins-mups-in-wild-house-mice
#20
Michaela Thoß, Viktoria Enk, Hans Yu, Ingrid Miller, Kenneth C Luzynski, Boglarka Balint, Steve Smith, Ebrahim Razzazi-Fazeli, Dustin J Penn
Major urinary proteins (MUPs) are often suggested to be highly polymorphic, and thereby provide unique chemical signatures used for individual and genetic kin recognition; however, studies on MUP variability have been lacking. We surveyed populations of wild house mice (Mus musculus musculus), and examined variation of MUP genes and proteins. We sequenced several Mup genes (9 to 11 loci) and unexpectedly found no inter-individual variation. We also found that microsatellite markers inside the MUP cluster show remarkably low levels of allelic diversity, and significantly lower than the diversity of markers flanking the cluster or other markers in the genome...
December 6, 2016: Scientific Reports
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