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Nikolaos Askitas
This paper suggests a new way to think about a famous question: what explains cooperation in nature and in particular in humans? I argue that, for an evolutionary biologist as well as a quantitative social scientist, the triangle of two 'teammates' in the presence of a predator (passing and shooting in two-on-one situations) is one of the fundamental conceptual building-blocks for understanding these phenomena because in such a situation the fact that life is packaged in many distinct enclosures (and not in one big monolithic blob) can unfold its comparative advantage...
December 2018: Journal of Biological Dynamics
Dora Reglodi, Adel Jungling, Rémi Longuespée, Joerg Kriegsmann, Rita Casadonte, Mark Kriegsmann, Tamas Juhasz, Sebastian Bardosi, Andrea Tamas, Balazs Daniel Fulop, Krisztina Kovacs, Zsuzsanna Nagy, Jason Sparks, Attila Miseta, Gabriel Mazzucchelli, Hitoshi Hashimoto, Attila Bardosi
Dysregulation of neuropeptides may play an important role in aging-induced impairments. Among them, pituitary adenylate cyclase activating polypeptide (PACAP) is a potent cytoprotective peptide that provides an endogenous control against a variety of tissue-damaging stimuli. We hypothesized that the progressive decline of PACAP throughout life, and the well-known general cytoprotective effects of PACAP lead to age-related pathophysiological changes in PACAP deficiency, supported by the increased vulnerability to various stressors of animals partially or totally lacking PACAP...
May 17, 2018: Journal of Pathology
T Jüngling, M C Soriano, N Oliver, X Porte, I Fischer
Consistency refers to the property of an externally driven dynamical system to respond in similar ways to similar inputs. In a delay system, the delayed feedback can be considered as an external drive to the undelayed subsystem. We analyze the degree of consistency in a generic chaotic system with delayed feedback by means of the auxiliary system approach. In this scheme an identical copy of the nonlinear node is driven by exactly the same signal as the original, allowing us to verify complete consistency via complete synchronization...
April 2018: Physical Review. E
Mark Doidge, Elisa Sandri
The European 'refugee crisis' has generated a broad movement of volunteers offering their time and skills to support refugees across the continent, in the absence of nation states. This article focuses on volunteers who helped in the informal refugee camp in Calais called the 'Jungle'. It looks at the importance of emotions as a motivating factor for taking on responsibilities that are usually carried out by humanitarian aid organizations. We argue that empathy is not only the initial motivator for action, but it also sustains the voluntary activity as volunteers make sense of their emotions through working in the camp...
May 13, 2018: British Journal of Sociology
Christopher Dijanic, Jillian Nickerson, Sunita Shakya, Amanda Dijanic, Marilyn Fabbri
Primaquine (an 8-aminoquinoline malarial therapy) is the only FDA-approved therapy to treat the hypnozoite stage of P. vivax . We think of relapse occurring because of parasitic resistance or poor compliance secondary to drug toxicities. However, in patients with repeated treatment failure, we must consider CYP-450 mutations affecting drug metabolism as an important cause of relapse. A 47-year-old man who travelled to a jungle in Venezuela was diagnosed with P. falciparum and P. vivax in July 2015. He was treated with seven rounds of primaquine-based therapy in the following year, all resulted in relapse without further exposure to endemic areas...
2018: Case Reports in Infectious Diseases
Mia M Bengtsson, Karoline Wagner, Clarissa Schwab, Tim Urich, Tom J Battin
Phototrophic biofilms are ubiquitous in freshwater and marine environments where they are critical for biogeochemical cycling, food webs and in industrial applications. In streams, phototrophic biofilms dominate benthic microbial life and harbor an immense prokaryotic and eukaryotic microbial biodiversity with biotic interactions across domains and trophic levels. Here, we examine how community structure and function of these biofilms respond to varying light availability, as the crucial energy source for phototrophic biofilms...
April 21, 2018: Molecular Ecology
Jarne M van Hattem, Tessa J C Langeveld, Sylvia M Bruisten, Marion Kolader, Martin P Grobusch, Henry J C de Vries, Godelieve J de Bree
OVERVIEW: We describe the first case of a cutaneous ulcer caused by Haemophilus ducreyi imported from Indonesia to the Netherlands. Skin infections caused by H. ducreyi are uncommon in travellers and have been described in just a few case reports and were all contracted on the Pacific Islands. THE CASE: A 22-year-old healthy male visited the Center of Tropical Medicine and Travel Medicine in February 2017 with a cutaneous ulcer of the right lateral malleolus 4 weeks after returning from Indonesia (Seram and Ambon Islands)...
April 2018: PLoS Neglected Tropical Diseases
Matteo Megna, Anna Balato, Maddalena Napolitano, Lucia Gallo, Francesco Caso, Luisa Costa, Nicola Balato, Raffaele Scarpa
No abstract text is available yet for this article.
April 11, 2018: Clinical Rheumatology
Markus Bürge, Gabriela Bieri, Matthias Brühlmeier, Françoise Colombo, Jean-Francois Demonet, Ansgar Felbecker, Dan Georgescu, Anton Gietl, Andrea Brioschi Guevara, Freimut Jüngling, Eberhard Kirsch, Reto W Kressig, Luka Kulic, Andreas U Monsch, Martin Ott, Hans Pihan, Julius Popp, Luca Rampa, Brigitte Rüegger-Frey, Marianne Schneitter, Paul Gerson Unschuld, Armin von Gunten, Birte Weinheimer, Roland Wiest, Egemen Savaskan
No abstract text is available yet for this article.
April 2018: Praxis
Mikayla F A Baxter, Juan D Latorre, Dawn A Koltes, Sami Dridi, Elizabeth S Greene, Stephen W Bickler, Jae H Kim, Ruben Merino-Guzman, Xochitl Hernandez-Velasco, Nicholas B Anthony, Walter G Bottje, Billy M Hargis, Guillermo Tellez
This article is the first in a series of manuscripts to evaluate nutritional rehabilitation in chickens as a model to study interventions in children malnutrition (Part 1: Performance, Bone Mineralization, and Intestinal Morphometric Analysis). Inclusion of rye in poultry diets induces a nutritional deficit that leads to increased bacterial translocation, intestinal viscosity, and decreased bone mineralization. However, it is unclear the effect of diet on developmental stage or genetic strain. Therefore, the objective was to determine the effects of a rye diet during either the early or late phase of development on performance, bone mineralization, and intestinal morphology across three diverse genetic backgrounds...
2018: Frontiers in Nutrition
Mohd Isa Farhanah, Abdul Rahaman Yasmin, Nguyen Phuc Khanh, Swee Keong Yeap, Mohd Hair-Bejo, Abdul Rahman Omar
Very virulent infectious bursal disease virus (vvIBDV) targets B lymphocytes in the bursa of Fabricius (BF), causing immunosuppression and increased mortality rates in young birds. There have been few studies on the host immune response following vvIBDV infection at different inoculum doses in chickens with different genetic backgrounds. In this study, we characterized the immune responses of specific-pathogen-free (SPF) chickens and Malaysian red jungle fowl following infection with vvIBDV strain UPM0081 at 103...
April 6, 2018: Archives of Virology
Kritika M Garg, Balaji Chattopadhyay, Peter R Wilton, Dewi Malia Prawiradilaga, Frank E Rheindt
Cyclical periods of global cooling have been important drivers of biotic differentiation throughout the Quaternary. Ice age-induced sea level fluctuations can lead to changing patterns of land connections, both facilitating and disrupting gene flow. In this study, we test if species with differing life histories are differentially affected by Quaternary land connections. We used genome-wide SNPs in combination with mitochondrial gene sequences to analyse levels of divergence and gene flow between two songbird complexes across two Wallacean islands that have been repeatedly connected during glaciations...
April 3, 2018: Molecular Phylogenetics and Evolution
D Reglodi, A Tamas, A Jungling, A Vaczy, A Rivnyak, B D Fulop, E Szabo, A Lubics, T Atlasz
Pituitary adenylate cyclase activating polypeptide (PACAP) is a neuropeptide highly expressed in the central and peripheral nervous system, where it exerts several neuromodulatory functions and is an important trophic and protective factor. PACAP has been shown to activate several protective pathways, mainly through its specific PAC1 receptor and protein kinase A, C and MAP kinases downstream. It has been shown to have very potent neuroprotective actions against different neurotoxic agents both in vitro and in vivo...
March 28, 2018: Neurotoxicology
A M Carnero, K Kitayama, D A Diaz, M Garvich, N Angulo, V A Cama, R H Gilman, A M Bayer
Interspecies transmission of pathogens is an unfrequent but naturally occurring event and human activities may favour opportunities not previously reported. Reassortment of zoonotic pathogens like influenza A virus can result from these activities. Recently, swine and birds have played a central role as "mixing vessels" for epidemic and pandemic events related to strains like H1N1 and H5N1. Unsafe practices in poultry markets and swine farms can lead to interspecies transmission, favouring the emergence of novel strains...
March 30, 2018: Zoonoses and Public Health
Joy Dierks, Tammy Servies, Tai Do
Introduction: The US Marines operate the Jungle Warfare Training Center (JWTC) in Northern Okinawa, where leptospirosis is endemic. The JWTC endurance course involves prolonged fresh and stagnant water exposures in a simulated jungle warfare environment. Since a leptospirosis outbreak in 1987, JWTC has required prophylactic use of doxycycline at 200 mg weekly during exposure to the endurance course. This policy is based on a 1982 study in a similar environment in Panama. In August and September of 2014, an outbreak of leptospirosis occurred among 81 Marines training at JWTC...
March 1, 2018: Military Medicine
Devika Iddawela, Sanura Malinda Pallegoda Vithana, Dhilma Atapattu, Lanka Wijekoon
BACKGROUND: Leishmaniasis, a vector borne tropical/subtropical disease caused by the protozoan Leishmania is transmitted to humans by sandfly vectors Phlebotomus and Lutzomyia. The principal form found in Sri Lanka is cutaneous leishmaniasis (CL) and is caused by Leishmania donovani. A rising trend in disease prevalence has been observed recently in Sri Lanka and the island is in fact the newest endemic focus in South Asia. Determining the prevalence of smear positivity among clinically suspected CL patients, identifying risk factors and specific clinical presentations of CL in order to implement preventive and early treatment strategies were the objectives of this study...
March 6, 2018: BMC Infectious Diseases
Valentyna Krashevska, Elena Malysheva, Bernhard Klarner, Yuri Mazei, Mark Maraun, Rahayu Widyastuti, Stefan Scheu
We investigated how the land-use change from rainforest into jungle rubber, intensive rubber and oil palm plantations affects decomposers and litter decomposition in Sumatra, Indonesia. Litterbags containing three litter types were placed into four land-use systems and harvested after 6 and 12 months. Litter mass loss and litter element concentrations were measured, and different microbial groups including bacteria, fungi and testate amoebae were studied. After 12 months 81, 65, 63 and 53% of litter exposed in rainforest, jungle rubber in oil palm and rubber plantations was decomposed...
May 2018: Oecologia
Andrés Ernesto Ortiz-Rodriguez, Juan Francisco Ornelas, Eduardo Ruiz-Sanchez
The predominantly Asian tribe Miliuseae (Annonaceae) includes over 37 Neotropical species that are mainly distributed across Mesoamerica, from southern Mexico to northern Colombia. The tremendous ecological and morphological diversity of this clade, including ramiflory, cauliflory, flagelliflory, and clonality, suggests adaptive radiation. Despite the spectacular phenotypic divergence of this clade, little is known about its phylogenetic and evolutionary history. In this study we used a nuclear DNA marker and seven chloroplast markers, and maximum parsimony, maximum likelihood and Bayesian inference methods to reconstruct a comprehensive time-calibrated phylogeny of tribe Miliuseae, especially focusing on the Desmopsis-Stenanona clade...
May 2018: Molecular Phylogenetics and Evolution
T Gazoni, C F B Haddad, H Narimatsu, D C Cabral-de-Mello, M L Lyra, P P Parise-Maltempi
Heteromorphic sex chromosomes are common in eukaryotes and largely ubiquitous in birds and mammals. The largest number of multiple sex chromosomes in vertebrates known today is found in the monotreme platypus (Ornithorhynchus anatinus, 2n = 52) which exhibits precisely 10 sex chromosomes. Interestingly, fish, amphibians, and reptiles have sex determination mechanisms that do or do not involve morphologically differentiated sex chromosomes. Relatively few amphibian species carry heteromorphic sex chromosomes, and when present, they are frequently represented by only one pair, either XX:XY or ZZ:ZW types...
January 26, 2018: Chromosoma
Pooja Rai, Usha Rani
BACKGROUND: Newborn hospitalized in the neonatal intensive care unit (NICU) raises a mother's risk of reduced health-related quality of life (QoL). We explored the contributors inducing stress among mothers related to NICU. METHODOLOGY: One hundred thirty-five mothers, whose newborn has completed 48 hours of NICU stay, were interviewed using parental stress scale: neonatal intensive care unit and SF-36 health survey questionnaire for further assessment. RESULTS: The look and behavior of the baby were predominant contributor to the decreased QoL among mothers (p= <...
January 25, 2018: Journal of Maternal-fetal & Neonatal Medicine
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